WO2015129578A1

WO2015129578A1 - Terminal device, base station device, and method

Info

Publication number: WO2015129578A1
Application number: PCT/JP2015/054807
Authority: WO
Inventors: 渉大内; 寿之示沢; 翔一鈴木; 立志相羽; 公彦今村
Original assignee: シャープ株式会社
Priority date: 2014-02-28
Filing date: 2015-02-20
Publication date: 2015-09-03
Also published as: JP2017079338A

Abstract

　The present invention provides a terminal device, a base station device, and a method capable of efficiently performing communication in a communication system in which a base station device (1) and a terminal device (2) communicate. A terminal device (2) for performing communication with a base station device (1), wherein the terminal device (2) maps physical resources to a physical uplink control channel (PUCCH) on the basis of a prescribed scheme when a first parameter and/or a second parameter are set.

Description

Terminal apparatus, base station apparatus and method

The present invention relates to a terminal device, a base station device, and a method.
This application claims priority based on Japanese Patent Application No. 2014-037699 filed in Japan on February 28, 2014, the contents of which are incorporated herein by reference.

Wireless LAN by 3GPP (Third Generation Partnership Project) WCDMA (Wideband Code Division Multiple Access) (Registered Trademark), LTE (Long Term Evolution), LTE-A (LTE-Advanced), and IEEE (The Institute of Electrical Electronics and Electronics Electronics) (WLAN: Wireless Local Area Network), communication systems such as WiMAX (Worldwide Interoperability for Microwave Access), base station devices (cells, first communication devices (communication devices different from terminal devices), eNodeB), and Each terminal device (mobile terminal, mobile station device, second communication device (communication device different from the base station device), UE (User Equipment), user device) includes a plurality of transmission / reception antennas, and MIMO (Multi Input Multi Using output technology, data signals are spatially multiplexed to realize high-speed data communication.

Also, in 3GPP, carrier aggregation (CA: Carrier Aggregation) in which communication is performed simultaneously using a plurality of component carriers is employed in order to realize high-speed data communication between a base station device and a terminal device (non-carrier) Patent Document 1).

3GPP employs frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: フレーム Time 双方向 Division Duplex) as the frame structure type of the bidirectional communication method (duplex method). In FDD, full duplex (Full Duplex) capable of bidirectional communication at the same time and full duplex (Half duplex) (Half Duplex) which realizes bidirectional communication by switching one-way communication. Duplex) is employed (Non-Patent Document 2). Note that LTE employing TDD may also be referred to as TD-LTE, LTE TDD.

In LTE, physical resources of a physical uplink control channel are defined to be mapped to both ends of an uplink system bandwidth (uplink channel bandwidth, uplink transmission bandwidth setting) (Non-patent Document 2). .

In 3GPP, there is a TDD-FDD carrier aggregation (TDD-FDD CA) that performs communication by aggregating a component carrier that supports TDD (TDD carrier) and a component carrier that supports FDD (FDD carrier). It has been studied (Non-Patent Document 3).

The frequency band (operating band, operating frequency) to be used is assigned to each telecommunications carrier (operator, operator).

隣接 The adjacent channel leakage power ratio in the intra-band causes various interferences, resulting in a problem that appropriate communication cannot be performed.

The present invention has been made in view of the above problems, and an object thereof is to provide a terminal device, a base station device, and a method that enable appropriate communication.

(1) The present invention has been made to solve the above-described problem, and a terminal apparatus according to an aspect of the present invention is a terminal apparatus that communicates with a base station apparatus, and relates to setting of a physical uplink control channel. When the first parameter and the second parameter are set in the receiving unit that receives information using higher layer signaling and the information related to the setting of the physical uplink control channel, the first parameter And physical resource mapping for the physical uplink control channel based on the first scheme using the second parameter and the first parameter and the second parameter in the information related to the configuration of the physical uplink control channel. Is not set, it is based on the second method that does not use the first parameter and the second parameter. Te, and a transmission section that performs physical resource mapping for the physical uplink control channel.

(2) A terminal apparatus according to an aspect of the present invention is the terminal apparatus described above, wherein physical resource mapping for a physical uplink control channel based on the first scheme is in the format of the physical uplink control channel. A variable m set based on the uplink bandwidth N ^UL _RB represented by the resource block, the first parameter is the offset N _{RB_offset_low at} the lower end of the resource block, and the second parameter is the offset at the upper end of the resource block N _{RB_offset_high} ,

May be indicated. The physical resource mapping for the physical uplink control channel based on the second scheme is as follows:

May be indicated.

(3) A base station apparatus according to another aspect of the present invention is a base station apparatus that communicates with a terminal apparatus, and transmits information related to setting of a physical uplink control channel using higher layer signaling. And when the first parameter and the second parameter are set in the information related to the setting of the physical uplink control channel, the physical uplink control channel is physically mapped based on the first scheme. When the first parameter and the second parameter are not set in the information related to the setting of the physical uplink control channel received from the resource, the physical uplink control channel is mapped based on the second scheme. Receiving from the physical resource.

(4) A base station apparatus according to an aspect of the present invention is the base station apparatus described above, wherein physical resource mapping for a physical uplink control channel based on the first scheme is performed by the physical uplink control channel. The variable m set based on the format, the uplink bandwidth N ^UL _RB represented by the resource block, the first parameter is the offset N _{RB_offset_low at} the lower end of the resource block, and the second parameter is the upper end of the resource block Offset N _{RB_offset_high} of

May be indicated.

(5) A method according to another aspect of the present invention is a method of a terminal apparatus that communicates with a base station apparatus, and receives information related to setting of a physical uplink control channel using higher layer signaling. And the first method using the first parameter and the second parameter when the first parameter and the second parameter are set in the information related to the setting of the physical uplink control channel And performing physical resource mapping for the physical uplink control channel, and when the first parameter and the second parameter are not set in the information related to the setting of the physical uplink control channel, Based on the first scheme and the second scheme not using the second parameter, the physical uplink control channel Comprising the steps of: performing a physical resource mapping for.

(6) A method according to another aspect of the present invention is a method of a base station apparatus that communicates with a terminal apparatus, and transmits information related to setting of a physical uplink control channel using higher layer signaling. And when the first parameter and the second parameter are set in the information related to the setting of the physical uplink control channel, the physical uplink control channel is mapped to the physical resource based on the first scheme. And when the first parameter and the second parameter are not set in the information related to the setting of the physical uplink control channel, the physical uplink control channel is mapped based on the second scheme. Receiving from the designated physical resource.

As a result, the terminal device and the base station device can perform appropriate transmission control.

According to this aspect of the present invention, in a communication system in which a base station apparatus and a terminal apparatus communicate, the terminal apparatus can reduce interference between channels due to an adjacent channel leakage power ratio by performing appropriate transmission control.

It is a schematic block diagram which shows the structure of the base station apparatus 1 which concerns on embodiment of this invention. It is a schematic block diagram which shows the structure of the terminal device 2 which concerns on embodiment of this invention. It is a figure which shows the structure of the sub-frame pattern corresponding to TDD UL / DL setting. It is a flowchart which shows the procedure of the process 1 of the terminal device 2 which concerns on embodiment of this invention. It is a flowchart which shows the procedure of the process 3 of the terminal device 2 which concerns on embodiment of this invention. It is a flowchart which shows the procedure of the process 6 of the terminal device 2 which concerns on embodiment of this invention. It is an example of the value of _KPUSCH corresponding to an uplink reference UL / DL setting. It is an example of the downlink related set index corresponding to a downlink reference UL / DL setting. It is an example of an effective subframe when a reference UL / DL setting is applied to each of uplink / downlink of an FDD cell. It is an example of the mapping of the physical resource block (modulation symbol) with respect to PUCCH.

In the communication system of the present embodiment, carrier aggregation that performs communication by aggregating a plurality of component carriers may be applied. In addition, since a cell can be comprised using a component carrier, a carrier aggregation may be called a cell aggregation. That is, it can be said that the communication system of this embodiment can perform communication by aggregating a plurality of cells. In the cell aggregation in the communication system of the present embodiment, communication is performed by aggregating a cell to which the TDD scheme is applied (TDD cell) and a cell to which the FDD scheme is applied (FDD cell) among a plurality of cells. Also good. That is, in the communication system of the present embodiment, cell aggregation in a plurality of cells in which different frame structure types (Frame Structure Type) are set may be applied. Note that the frame structure type is sometimes called a duplex mode. In LTE and LTE-A, frame structure type 1 is defined as FDD, and frame structure type 2 is defined as TDD. Note that although FDD and TDD are described for the duplex mode, this embodiment is applicable even when a third duplex mode (XDD) or a fourth duplex mode (YDD) is added. is there. In other words, the present embodiment can be applied even when the frame structure type 3 or the frame structure type 4 is added.

Cell aggregation is to perform communication by aggregating one primary cell and one or more secondary cells. Further, the primary cell may be configured using uplink component carriers and downlink component carriers, whereas the secondary cell may be configured using only downlink component carriers.

The set serving cells (plural cells) include one primary cell and one or more secondary cells. The primary cell is a serving cell in which an initial connection establishment (initial connection establishment) procedure has been performed, a serving cell that has initiated a connection re-establishment procedure, or a cell designated as a primary cell in a handover procedure. A secondary cell may be set when an RRC connection is established between the base station apparatus 1 (or serving cell) and the terminal apparatus 2 or afterwards. A plurality of serving cells may be configured by one base station apparatus 1, or a plurality of serving cells may be configured by a plurality of base station apparatuses 1. Moreover, one serving cell may be comprised by the some base station apparatus 1. FIG.

In addition, uplink and downlink frequency bands (UL / DL operating band) and duplex modes (TDD, FDD) are associated with one index. In addition, uplink and downlink frequency bands (operating bands) and duplex modes are managed by one table. This index may be called an E-UTRA operating band (E-UTRA-Operating Band), an E-UTRA band (E-UTRA Band), or a band. For example, index 1 may be referred to as band 1, index 2 as band 2, and index n as band n. For example, for the band 1, the uplink operating band is 1920 MHz to 1980 MHz, the downlink operating band is 2110 MHz to 2170 MHz, and the duplex mode is FDD. In the band 33, the uplink and downlink operating bands are 1900 MHz to 1920 MHz, and the duplex mode is TDD.

In the E-UTRA operating band, new uplink and downlink frequency bands may be set, and a new duplex mode may be associated.

Also, a combination of bands (E-UTRA CA Band) capable of carrier aggregation may be set. For example, it may be shown that carrier aggregation by component carriers in band 1 and band 5 is possible. That is, whether or not carrier aggregation by component carriers in different bands is allowed (valid or invalid) may be indicated.

The combination of the band supported by the terminal device 2 and the band capable of carrier aggregation is set in the function information (UE capability, UE-EUTRA-Capability) of the terminal device 2. By transmitting the function information, the functions of the terminal device 2 can be grasped.

The present invention may be applied to some of a plurality of set cells. A cell set in the terminal device 2 may be referred to as a serving cell.

TDD is a technology that enables downlink and uplink communications in a single frequency band (carrier frequency, component carrier) by time-division multiplexing uplink signals and downlink signals. In LTE, the downlink and the uplink can be switched in units of subframes by setting in advance. In TDD, subframes capable of downlink transmission (downlink subframes, subframes reserved for downlink transmission) and subframes capable of uplink transmission (uplink subframes, uplink transmission). Subframes (special subframes) that can be switched between downlink transmission and uplink transmission in the time domain (symbol domain) by providing a guard period (GP: Guard Period). Is defined. In the special subframe, a time domain in which downlink transmission is possible (a symbol corresponding to the time domain) is called a downlink pilot time slot (DwPTS: Downlink Pilot Time Slot), and a time domain in which uplink transmission is possible ( A symbol corresponding to the time domain) is referred to as an uplink pilot time slot (UpPTS: Uplink Pilot Time Slot). For example, when the subframe i is a downlink subframe, the terminal apparatus 2 can receive a downlink signal transmitted from the base station apparatus 1, and a subframe j different from the subframe i is an uplink subframe. In the case of a frame, an uplink signal can be transmitted from the terminal device 2 to the base station device 1. When subframe k different from subframe i or subframe j is a special subframe, a downlink signal can be received in downlink time domain DwPTS, and an uplink signal can be received in uplink time domain UpPTS. Can be sent.

In addition, in order to perform communication in the TDD scheme in LTE and LTE-A, specific information elements (TDD UL / DL settings (TDD UL / DL configuration (s), TDD uplink-downlink configuration (s)), TDD settings ( TDD で configuration (s), tdd-Config, TDD config), and UL / DL (UL-DL) settings (uplink-downlinksconfiguration (s))). Based on the notified information, the terminal device 2 can perform a transmission / reception process by regarding a certain subframe as an uplink subframe, a downlink subframe, or a special subframe. The TDD UL / DL setting may also be referred to as subframe setting (subframeConfig) or subframe assignment (subframeAssignment). FIG. 3 shows an example of TDD UL / DL settings. FIG. 3 shows a correspondence relationship between a subframe pattern composed of a downlink subframe, a special subframe, and an uplink subframe and an index (or value or parameter). When the base station apparatus 1 performs communication using a specific TDD UL / DL setting, the base station apparatus 1 transmits an index corresponding to the specific TDD UL / DL setting to the terminal apparatus 2.

In addition, the configuration of the special subframe (the length of DwPTS, UpPTS, and GP in the special subframe) defines a plurality of patterns and is managed in a table. Each of the plurality of patterns is associated with a value (index), and when the value is notified, the terminal device performs processing of the special subframe based on the pattern associated with the notified value. . That is, information (specialSubframePatterns) related to the configuration of the special subframe can also be notified from the base station apparatus 1 to the terminal apparatus 2 using higher layer signaling or system information (system information block). When the terminal device 2 supports the function of expanding the special subframe configuration, the function information (tdd-specialsubframe) is notified to the base station device 1 to add a new special subframe configuration. Can be used.

In addition, a traffic adaptive control technique that changes the ratio of uplink resources and downlink resources according to uplink traffic and downlink traffic (information amount, data amount, communication amount) may be applied to TDD. For example, the ratio between the downlink subframe and the uplink subframe can be dynamically changed. A downlink subframe and an uplink subframe can be adaptively switched for a certain subframe. Such a subframe is called a flexible subframe. Base station apparatus 1 can receive an uplink signal or transmit a downlink signal in a flexible subframe depending on conditions (situation, state, mode). In addition, unless the base station apparatus 1 instructs the terminal apparatus 2 to transmit an uplink signal in the flexible subframe, the terminal apparatus 2 can perform reception processing by regarding the flexible subframe as a downlink subframe. Also, the TDD for dynamically changing the ratio of the downlink subframe and the uplink subframe, the uplink and the downlink subframe, and the TDD UL / DL (re-) setting is dynamic TDD (DTDD: Dynamic TDD) or It may also be called eIMTA (enhancedanceInterference Mitigation and Traffic Adaptation). For example, the TDD UL / DL setting information may be transmitted by L1 signaling (PDCCH, DCI format, etc.).

When performing FDD or carrier aggregation, a guard band is set in consideration of leakage power and interference generated between a plurality of component carriers (or adjacent channels). In other words, the communication system reduces the influence of leakage power and interference between component carriers (or adjacent channels) by setting a guard band.

Guard band is set according to the bandwidth used. This guard band is sometimes referred to as a standard guard band (Nominal Guard Band). However, resources cannot be effectively used by setting a guard band. Therefore, a guard band may not be set in a certain band.

Since a typical TDD has the same frequency and the same bandwidth in the uplink and downlink, the carrier frequency and bandwidth (system bandwidth, channel bandwidth, transmission bandwidth) for the uplink are not set. Good. The carrier frequency and bandwidth for the uplink are set to the same values as the carrier frequency and bandwidth (system bandwidth, channel bandwidth, transmission bandwidth) for the downlink. Furthermore, in the case of carrier aggregation, the number of downlink component carriers and the number of uplink component carriers are the same. In other words, in typical TDD, the carrier frequency, bandwidth, and number of component carriers cannot be changed between the uplink and the downlink.

In the same band where no guard band is set, when different carriers are communicating (services) using TDD, leakage power is generated from the signals (channel, component carrier) used for communication. May interfere with each other. For example, in a channel used between carriers with adjacent carrier frequencies, if there is leakage power or adjacent channel leakage power ratio (ACLR: Adjacent Channel Leakage Ratio), the signals may interfere with each other.

When ACLR occurs, interference in the cell and outside the cell can be reduced by changing the bandwidth (system bandwidth, channel bandwidth, transmission bandwidth) used in uplink and downlink in FDD. it can. However, in TDD, the bandwidth used in the uplink and downlink is the same and cannot be changed, so interference cannot be reduced.

On the other hand, FDD is a technology that enables downlink and uplink communications in different frequency bands (carrier frequency, component carrier). In other words, in FDD, the component carrier for downlink and the component carrier for uplink are different. Also, the bandwidths (system bandwidth, channel bandwidth, transmission bandwidth) for the downlink and uplink may be different. That is, the bandwidth for each downlink and uplink may be set individually.

Also, in FDD, the number of downlink component carriers and the number of uplink component carriers may be different. That is, a certain cell may be configured with a downlink component carrier and an uplink component carrier, and another cell may be configured with only a downlink component carrier. However, the primary cell always includes a downlink component carrier and an uplink component carrier.

As the communication system, a cellular communication system in which a plurality of areas covered by the base station device 1 are arranged in a cell shape may be applied. A single base station apparatus 1 may manage a plurality of cells. Moreover, the single base station apparatus 1 may manage several RRH (Remote * Radio | Head). A single base station apparatus 1 may manage a plurality of local areas. Moreover, the single base station apparatus 1 may manage several HetNet (Heterogeneous Network). Further, a single base station apparatus 1 may manage a plurality of low power base station apparatuses (LPN: “Low” Power “Node”).

In the communication system, the terminal device 2 measures the reference signal received power (RSRP: Reference Signal Received Power) based on the cell-specific reference signal (CRS: Cell-specific Reference Signal (s)).

In the communication system, communication may be performed using a carrier (component carrier) in which some physical channels and signals defined in LTE are not arranged. Here, such a carrier is referred to as a new carrier type (NCT: “New Carrier Type”). For example, the cell-specific reference signal, the physical downlink control channel, and the synchronization signal (primary synchronization signal and secondary synchronization signal) may not be arranged in the new carrier type. In addition, in a cell in which a new carrier type is set, a physical channel (PDCH: Physical Discovery Channel, NDS: New Discovery Signal (s), DRS: Discovery Reference Signal, DS: The introduction of Discovery (Signal) is under consideration. NCT may also be referred to as an additional carrier type (ACT: “Additional Carrier Type”). In addition, for NCT, an existing carrier type may be referred to as a legacy carrier type (LCT: “Legacy Carrier Type”).

In the embodiment of the present invention, “X / Y” includes the meaning of “X or Y”. In embodiments of the present invention, “X / Y” includes the meanings of “X and Y”. In embodiments of the present invention, “X / Y” includes the meaning of “X and / or Y”.

(Physical channel)
Main physical channels (or physical signals) used in LTE and LTE-A will be described. A channel means a medium used for signal transmission. A physical channel means a physical medium used for signal transmission. The physical channel may be added in the future in LTE and LTE-A and later standard releases, or the structure and format may be changed or added. Even in such a case, each embodiment of the present invention Does not affect the description.

In LTE and LTE-A, physical channel scheduling is managed using radio frames. One radio frame is 10 ms, and one radio frame is composed of 10 subframes. Further, one subframe is composed of two slots (that is, one slot is 0.5 ms). Also, resource blocks are used as a minimum scheduling unit in which physical channels are allocated. A resource block is a region where the frequency axis is composed of a certain frequency region composed of a set of a plurality of subcarriers (for example, 12 subcarriers) and a certain transmission time interval (for example, 1 slot, 7 symbols) Defined.

In order to improve the communication accuracy, a cyclic prefix (CP: Cyclic Prefix) corresponding to the redundant part of the physical channel is added to the physical channel and transmitted. The number of symbols arranged in one slot varies depending on the length of the CP. For example, in the case of standard CP (Normal CP), 7 symbols can be arranged in one slot, and in the case of extended CP (Extended CP), 6 symbols can be arranged in one slot.

Also, by reducing the subcarrier interval, 24 subcarriers can be arranged in one resource block. It may be applied to a specific physical channel.

The physical channel corresponds to a set of resource elements that transmit information output from the upper layer. The physical signal is used in the physical layer and does not transmit information output from the upper layer. That is, upper layer control information such as a radio resource control (RRC: “Radio Resource Control”) message and system information (SI: “System Information”) is transmitted on the physical channel.

Downlink physical channels include physical downlink shared channel (PDSCH: Physical Downlink Shared Channel), physical broadcast channel (PBCH: Physical Physical Broadcast Channel), physical multicast channel (PMCH: Physical Multicast Channel), physical control format indicator channel (PCFICH) : Physical Format Indicator Channel), Physical Downlink Control Channel (PDCCH: DCPhysical Downlink Control Channel), Physical Hybrid ARQ Indicator Channel (PHICH: Physical Hybrid ARQ Indicator Channel), Enhanced Physical Downlink Control Channel (EPDCCH: Enhanced Physical Downlink Control) Channel). Further, downlink physical signals include various reference signals and various synchronization signals. The downlink reference signal (DL-RS: Downlink Reference Signal) includes a cell specific reference signal (CRS: Cell Specific Reference Signal), a terminal device specific reference signal (UERS: UE Specific Reference Signal), and a channel state information reference signal (CSI). -RS: Channel State Information Reference Signal). The synchronization signal (Synchronization Signal) includes a primary synchronization signal (PSS: Primary Synchronization Signal) and a secondary synchronization signal (SSS: Secondary Synchronization Signal).

The uplink physical channel includes a physical uplink shared channel (PUSCH: Physical Uplink Shared Channel), a physical uplink control channel (PUCCH: Physical Uplink Control Channel), and a physical random access channel (PRACH: Physical Random Access Channel). In addition, the uplink physical signal includes various reference signals. The uplink reference signal includes a demodulation reference signal (DMRS: “Demodulation Reference Signal”) and a sounding reference signal (SRS: “Sounding Reference Signal”).

The synchronization signal (Synchronization Signal) is composed of three types of PSS and SSS composed of 31 types of codes arranged alternately in the frequency domain, and identifies the base station apparatus 1 by the combination of PSS and SSS. 504 physical layer cell identifiers (PCI: [Physical] layer [Cell Identity], [Physical] Cell [Identity], [Physical] Cell [Identifier]) and frame timing for radio synchronization are shown. The terminal device 2 specifies the cell identifier of the synchronization signal received by the cell search. Note that the cell identifier may be referred to as a cell ID. The physical layer cell identifier may be referred to as a physical cell ID.

The physical broadcast channel (PBCH: “Physical” Broadcast “Channel”) is transmitted for the purpose of notifying control parameters (broadcast information and system information) commonly used by the terminal devices 2 in the cell. Also, broadcast information not notified by PBCH (for example, SIB1 and some system information) is transmitted by PDSCH via DL-SCH. As broadcast information, a cell global identifier (CGI: Cell Global Identifier) indicating an individual identifier of a cell, a tracking area identifier (TAI: Tracking Area Identifier) for managing a standby area by paging, random access setting information (such as a transmission timing timer), Common radio resource setting information (shared radio resource setting information) is notified.

DL-RS is classified into multiple types according to its use. For example, cell-specific reference signals (CRS: パイロット Cell-specific reference 電力 signals) are pilot signals transmitted at a predetermined power for each cell, and are periodically repeated in the frequency domain and the time domain based on a predetermined rule. -RS. The terminal device 2 measures the reception quality for each cell by receiving the CRS. Further, the terminal apparatus 2 may use CRS as a reference signal for PDCCH / EPDCCH transmitted through the same antenna port as that of CRS or for demodulation of PDSCH. As a sequence used for CRS, a sequence identifiable for each cell is used. The CRS may be transmitted from the base station apparatus 1 in all downlink subframes, but the terminal apparatus 2 may receive only in the specified downlink subframe.

DL-RS is also used to estimate downlink propagation path fluctuations. The DL-RS used for estimating the channel fluctuation may be referred to as a channel state information reference signal (CSI-RS: “Channel State Information References Signals”) or a CSI reference signal. In addition, CSI-RS that is not actually transmitted or transmitted at zero power is a zero power channel state information reference signal (ZP CSI-RS: Zero Power Channel State Information Reference Signals) or zero power CSI reference. You may call it a signal. Further, the CSI-RS to which the signal is actually transmitted may be referred to as a non-zero power channel state information reference signal (NZP CSI-RS: Non Zero Power Channel State Information Reference Signals) or a non-zero power CSI reference signal. .

Also, the downlink resource used for measuring the interference component may be referred to as a channel state information interference measurement resource (CSI-IMR: Channel State Information -Interference Measurement Resource) or a CSI-IM resource. Using the zero power CSI-RS included in the CSI-IM resource, the terminal apparatus 2 may measure an interference signal in order to calculate the CQI value. In addition, the DL-RS individually set for each terminal device 2 includes a terminal device-specific reference signal (UERS: UE specific Reference Signals) or an individual reference signal (Dedicated Reference Signals), a downlink demodulation reference signal (DL DMRS: Downlink) This is a reference signal for each terminal device 2 and is used for demodulation of PDCCH or PDSCH transmitted through the same antenna port as UERS.

Note that these DL-RS sequences may be generated based on a pseudo-random sequence. Also, these DL-RS sequences may be generated based on Zadoff-Chu sequences. Also, these DL-RS sequences may be generated based on a gold sequence. Also, these DL-RS sequences may be pseudo-random sequences, Zadoff-Chu sequences, or gold sequence variants or variants.

The physical downlink shared channel (PDSCH: Physical Downlink Shared Channel) is used to transmit downlink data (DL-SCH). PDSCH is also used when system information is transmitted on DL-SCH. Information on resource allocation of PDSCH (Resource Block assignment, Resource allocation) is transmitted using PDCCH (DCI format). The PDSCH is also used to notify parameters (information elements, RRC messages) related to the downlink and uplink.

A physical downlink control channel (PDCCH: Physical Downlink Control Channel) is transmitted in some OFDM symbols from the head of each subframe, and resource allocation information according to the scheduling of the base station device 1 to the terminal device 2; It is used for the purpose of instructing the adjustment amount of increase / decrease of transmission power. The terminal device 2 monitors (monitors) the PDCCH addressed to itself before transmitting / receiving a layer 3 message (paging, handover command, RRC message, etc.), and transmits an uplink grant during transmission and a downlink grant (downlink assignment) during reception. It is necessary to obtain resource allocation information (also referred to as “mentment”) from the PDCCH addressed to the own station. The PDCCH may be configured to be transmitted from the base station apparatus 1 to the terminal apparatus 2 in the resource block area allocated individually (dedicated), in addition to the above-described OFDM symbol. is there. The PDCCH transmitted in the resource block (RB: 端末 Resource 装置 Block) allocated individually (dedicated) from the base station device 1 to the terminal device 2 is called an enhanced physical downlink control channel (EPDCCH: Enhanced PDCCH). There is also a case. In addition, the PDCCH transmitted using the above-described OFDM symbol may be referred to as a first control channel. Also, the EPDCCH may be referred to as a second control channel. Further, the resource area to which the PDCCH can be allocated may be referred to as a first control channel area, and the resource area to which the EPDCCH can be allocated may be referred to as a second control channel area. In the present invention, PDCCH basically includes EPDCCH.

The base station apparatus 1 may transmit PCFICH, PHICH, PDCCH, EPDCCH, PDSCH, synchronization signal (PSS / SSS), and DL-RS in the DwPTS of the special subframe. Moreover, the base station apparatus 1 does not need to transmit PBCH in DwPTS of a special subframe.

Further, the terminal device 2 may transmit the PRACH and SRS in the UpPTS of the special subframe. At that time, the PRACH may be transmitted in format 4 (PRACH format 4). Moreover, the terminal device 2 does not need to transmit PUCCH, PUSCH, and DMRS in UpPTS of a special subframe.

In addition, when the special subframe is configured only by GP and UpPTS, the terminal device 2 may transmit PUCCH and / or PUSCH and / or DMRS in the UpPTS of the special subframe.

Here, the terminal device 2 monitors a set of PDCCH candidates (PDCCH candidates) and / or EPDCCH candidates (EPDCCH candidates). Hereinafter, for simplification of description, the PDCCH may include an EPDCCH. The PDCCH candidate indicates a candidate that the PDCCH may be mapped and transmitted by the base station apparatus 1. A PDCCH candidate is composed of one or a plurality of control channel elements (CCE: Control Channel Element). In addition, the monitor may include that the terminal device 2 tries to decode (decode) each PDCCH in the set of PDCCH candidates according to all the DCI formats to be monitored.

Here, the set of PDCCH candidates that the terminal device 2 monitors is also referred to as a search space. The search space is a set of resources that may be used by the base station apparatus 1 for PDCCH transmission. In the PDCCH area, a common search space (CSS: Common Search Space) and a terminal device specific search space (USS: UE-specific Search Space) are configured (defined and set). Note that CSS and USS may be duplicated in the primary cell.

CSS is used for transmission of downlink control information to a plurality of terminal apparatuses 2. That is, CSS is defined by resources common to the plurality of terminal devices 2. The USS is used for transmission of downlink control information to a specific terminal apparatus 2. That is, the USS is individually set for a specific terminal device 2. Further, the USS may be set redundantly for a plurality of terminal devices 2.

The terminal device 2 monitors one CSS at each of the

aggregation levels

4 and 8 for each Non-DRX subframe in the primary cell.

The terminal device 2 monitors CSS for PDCCH (DCI format) without CIF (Carrier Indicator Field). The base station apparatus 1 does not transmit the PDCCH accompanied by the CIF to the CSS.

The downlink control information (DCI) is transmitted from the base station apparatus 1 to the terminal apparatus 2 in a specific format (configuration, form). This format may be referred to as a DCI format. Note that transmitting the DCI format includes transmitting DCI in a certain format. The DCI format can be rephrased as a format for transmitting DCI. A plurality of formats are prepared for the DCI format transmitted from the base station apparatus 1 to the terminal apparatus 2 (for example, DCI format 0/1 / 1A / 1B / 1C / 1D / 2 / 2A / 2B / 2C / 2D). / 3 / 3A / 4). In the DCI format, fields (bit fields) corresponding to various downlink control information are set.

When the base station apparatus 1 transmits common DCI (single DCI, same DCI) to a plurality of terminal apparatuses 2 in a certain DCI format, the base station apparatus 1 transmits the terminal apparatus 2 using the PDCCH (or EPDCCH) CSS. In contrast, when DCI is individually transmitted in a certain DCI format, it is transmitted by PDCCH (or EPDCCH) USS.

The DCI transmitted in the DCI format includes PUSCH and PDSCH resource allocation, modulation and coding scheme, sounding reference signal request (SRS request), channel state information request (CSI request), initial transmission of a single transport block, or There are a retransmission instruction, a transmission power control command for PUSCH, a transmission power control command for PUCCH, a cyclic shift of UL DMRS, an index of OCC (Orthogonal Cover Code), and the like. Various other DCIs are defined in specifications (standards).

The format used for uplink transmission control (for example, PUSCH scheduling) may be referred to as an uplink DCI format (for example, DCI format 0/4) or DCI related to the uplink. Note that the DCI format used for uplink transmission control may be referred to as an uplink grant (UL grant: Uplink grant). The format used for downlink reception control (eg, PDSCH scheduling) is changed to downlink DCI format (eg, DCI format 1 / 1A / 1B / 1C / 1D / 2 / 2A / 2B / 2C / 2D) or downlink. It may be referred to as related DCI. The DCI format used for downlink reception control may be referred to as a downlink grant (DL （grant: Downlink grant) or a downlink assignment (DL assignment: Downlink assignment). A format used for adjusting the transmission power of each of the plurality of terminal apparatuses 2 may be referred to as a group triggering DCI format (for example, DCI format 3 / 3A).

For example, DCI format 0 is information related to PUSCH resource allocation and modulation scheme necessary for scheduling one PUSCH in one serving cell, information related to transmission power control (TPC: Transmit Power Control) command for PUSCH, etc. Used to send Also, these DCIs are transmitted by PDCCH / EPDCCH. It can be said that the DCI format is composed of at least one DCI.

The DCI format includes DCI transmitted depending on whether it is the same DCI format or FDD (FDD cell) or TDD (TDD cell). For example, in DCI format 0, when TDD UL / DL setting is 0, uplink index (UL index: Uplink index) is transmitted, and when TDD UL / DL setting is 1 to 6, downlink assignment index (DAI : Downlink Assignment Index) is sent. Further, even with the same DCI, the bit size may be different between FDD and TDD. For example, the HARQ process number has a different bit size between FDD and TDD (3 bits for FDD and 4 bits for TDD). In the case of the DCI format 2B / 2C / 2D, an SRS request is transmitted only to TDD.

The terminal device 2 monitors the PDCCH in the CSS and / or USS of the PDCCH region, and detects the PDCCH addressed to itself.

RNTI assigned to the terminal device 2 by the base station device 1 is used for transmission of downlink control information (transmission on the PDCCH). Specifically, a cyclic redundancy check (CRC: Cyclic Redundancy check) parity bit is added to the DCI format (which may be downlink control information), and after the addition, the CRC parity bit is scrambled by the RNTI.

The terminal device 2 tries to decode the DCI format to which the CRC parity bit scrambled by the RNTI is added, and detects the DCI format in which the CRC is successful as the DCI format addressed to the own device (also called blind decoding). ) That is, the terminal device 2 tries to decode the PDCCH with the CRC scrambled by the RNTI, and detects the PDCCH in which the CRC is successful as the PDCCH addressed to the own device.

The terminal device 2 tries to decode (for example, perform blind decoding) in accordance with the aggregation level of CSS and USS, the number of PDCCH candidates, and the size of the DCI format (DCI format size, payload size of the DCI format). For example, in CSS, there are 4 and 8 aggregation levels, the number of PDCCH candidates is 6 and 4 in total, and there are two types of DCI formats with different sizes, so the number of blind decoding for CSS is 12 times. It becomes. That is, if the DCI addressed to the terminal device 2 is transmitted using the PDCCH by CSS, the terminal device 2 can detect any DCI format by performing blind decoding up to 12 times in CSS. it can. Further, in USS, there are 1, 2, 4, and 8 aggregation levels, and the number of PDCCH candidates is 16, 6, 2, and 2, respectively, and there are three types of DCI formats with different sizes in USS. Therefore, the blind decoding number for USS is 48 times. That is, if the DCI addressed to the terminal device 2 is transmitted using the PDCCH in the USS, the terminal device 2 can detect any DCI format by performing blind decoding up to 48 times in the USS. it can. That is, if the DCI addressed to itself is transmitted using PDCCH, the terminal device 2 can detect any DCI format by performing blind decoding up to 60 times. The number of blind decoding is the number of DCI formats having different sizes (DCI formats having different sizes such as 40 bits and 44 bits), the aggregation level of search space, the number of PDCCH candidates, and the number of component carriers (cells) that perform cross carrier scheduling. Decide by number. In addition, if the sizes are the same, the terminal device 2 performs blind decoding as one DCI format even if different types of DCI formats are used. For example, since the sizes of DCI format 0 and DCI format 1A are the same, it is regarded as one DCI format and blind decoding is performed. Also, the DCI format monitored by the terminal device 2 depends on the transmission mode set in each serving cell. The terminal device 2 identifies whether the DCI format 0 or the DCI format 1A is based on DCI (Flag for0format0 / format1A differentiation) for identifying the DCI format 0 / 1A transmitted in the DCI format. be able to. Using a similar method, a field for switching different DCI formats having the same format size (payload size, bit size) may be set in each DCI format. That is, a DCI field indicating whether a certain DCI format is the first DCI format or the second DCI format may be set in the first DCI format and the second DCI format.

In consideration of the reception processing delay of the terminal device 2, the total number (or threshold value) of blind decoding may be set (defined) in advance. Note that the total number of blind decoding may be different depending on whether carrier aggregation is set. That is, the total number of blind decoding may be changed according to the number of component carriers (serving cells) that perform blind decoding.

When the carrier aggregation is set, the terminal device 2 may be scheduled with a plurality of serving cells. However, at most one random access procedure is performed regardless of the number of serving cells. In cross-carrier scheduling with a carrier indicator field (CIF: “Carrier” Indicator “Field”), it enables a PDCCH of one serving cell to schedule resources for other serving cells. However, cross carrier scheduling is not applied to the primary cell. The primary cell is scheduled on the PDCCH of the primary cell. Moreover, when PDCCH of a secondary cell is set, cross-carrier scheduling is not applied with respect to the secondary cell. When the PDCCH of the secondary cell is not set, cross carrier scheduling may be applied to the secondary cell.

In cross-carrier scheduling, CIF (Carrier Indicator Field) is included in an uplink grant (DCI format related to uplink) or downlink grant (DCI format related to downlink) and transmitted in a certain cell, Uplink grants or downlink grants for different cells can be transmitted. That is, it is possible to control uplink / downlink transmission for a plurality of cells with one cell using a DCI format including CIF.

The terminal apparatus 2 in which the CIF related to the monitoring of the PDCCH in the serving cell c is set monitors the PDCCH in which the CRC scrambled by the C-RNTI is set in the PDCCH USS of the CIF and the serving cell c.

The terminal apparatus 2 in which the CIF related to monitoring the PDCCH in the primary cell is set monitors the PDCCH in which the CRC scrambled by the SPS-RNTI is set in the PDCCH USS of the CIF and the primary cell.

In cross carrier scheduling, the base station apparatus 1 is notified that the terminal apparatus 2 supports the function using the function information (UE-EUTRA-Capability), and the base station apparatus 1 is configured for cross carrier scheduling ( (CrossCarrierSchedulingConfig) is performed on the terminal device 2 and the setting information is transmitted to the terminal device 2, communication can be performed using cross carrier scheduling. This setting information may be notified using higher layer signaling.

The setting related to cross carrier scheduling may include information (cif-Presence) indicating whether or not CIF is included in the DCI format of PDCCH / EPDCCH. In addition, the settings related to cross carrier scheduling include information (schedulingCellId) indicating the cells that signal downlink allocation (downlink grant) and uplink grant (which cell signals downlink allocation and uplink grant). May be. This information is called scheduling cell ID information. The setting related to cross carrier scheduling may include information (pdsch-Start) indicating a PDSCH start OFDM symbol for the cell indicated by the scheduling cell ID information. Note that the scheduling cell ID information may be set independently for the uplink and the downlink for the terminal device 2 that independently supports the function of performing cross-carrier scheduling for the uplink and the downlink. Also, information indicating the PDSCH start OFDM symbol may be set only for the downlink.

When carrier aggregation is set, the downlink resource for semi-persistent scheduling is set in the primary cell, and only the PDCCH allocation for the primary cell can be prioritized over the semi-persistent allocation.

When carrier aggregation is set, uplink resources for semi-persistent scheduling are set in the primary cell, and only the PDCCH allocation for the primary cell can be prioritized over the semi-persistent allocation.

Also, the link between the uplink and the downlink makes it possible to distinguish the serving cell to which the downlink grant or the uplink grant is applied when there is no CIF. The downlink grant received in the primary cell corresponds to the downlink transmission in the primary cell. Further, the uplink grant received in the primary cell corresponds to the uplink transmission in the primary cell. Moreover, the downlink grant received in the secondary cell #n corresponds to the downlink transmission in the secondary cell #n. Further, the uplink grant received by the secondary cell #n corresponds to the uplink transmission in the secondary cell #n. When uplink usage is not set for the secondary cell #n, the uplink grant is ignored by the received terminal device 2.

When monitoring PDCCH with CIF corresponding to a certain secondary cell is set in another serving cell, the terminal device 2 does not expect to monitor the PDCCH of the secondary cell. In that case, the base station apparatus 1 does not need to transmit DCI with respect to the terminal device 2 using PDCCH by the secondary cell.

Here, RNTI includes C-RNTI (Cell-Radio Network Temporary Identifier). C-RNTI is a unique (unique) identifier used for RRC connection and scheduling identification. C-RNTI is used for dynamically scheduled unicast transmissions. Note that C-RNTI is applied with the same C-RNTI (same C-RNTI) in all serving cells when carrier aggregation is set.

RNTI includes Temporary C-RNTI. Temporary C-RNTI is an identifier used for a random access procedure. For example, the terminal device 2 may decode the DCI format (for example, DCI format 0) related to the uplink to which the CRC scrambled by the Temporary C-RNTI is added using only the CSS. Further, the terminal device 2 may attempt to decode the DCI format (for example, DCI format 1A) related to the downlink to which the CRC scrambled by the Temporary C-RNTI is added by using CSS and USS.

Further, when transmitting DCI by CSS, the base station apparatus 1 adds a CRC parity bit scrambled by Temporary C-RNTI or C-RNTI to DCI (DCI format), and when transmitting DCI by USS, CRC scrambled with C-RNTI may be added to (DCI format).

The physical uplink shared channel (Physical Uplink Shared Channel; PUSCH) is mainly used to transmit uplink data and uplink control information (Uplink Control Information; UCI). The UCI transmitted on the PUSCH includes channel state information (CSI: Channel State Information) and / or ACK / NACK. The CSI transmitted on the PUSCH includes an aperiodic CSI (A-CSI: Aperiodic CSI) and a periodic CSI (P-CSI: Periodic CSI). Similarly to the downlink, the resource allocation information of the physical uplink shared channel is indicated by the physical downlink control channel. Also, the PUSCH scheduled by the dynamic scheduling grant transmits uplink data. Moreover, PUSCH scheduled by a random access response grant transmits the information (for example, the identification information of the terminal device 2, message 3) of the local station relevant to random access. Moreover, the parameter used in order to set the transmission power with respect to transmission by PUSCH may differ according to the kind of detected grant. The control data is transmitted in the form of channel quality information (CQI and / or PMI), HARQ response information (HARQ-ACK, HARQ-ACK response), and rank information (RI). That is, the control data is transmitted in the form of uplink control information.

The physical uplink control channel (PUCCH: Physical Uplink Control Channel) is an acknowledgment (ACK / NACK: Acknowledgement / Negative Acknowledgement, HARQ-ACK) or downlink for downlink data transmitted using the physical downlink shared channel. Used for making a scheduling request (SR: 状態 Scheduling Request) that is a notification of propagation path information (channel state information) and an uplink resource allocation request (radio resource request). Channel state information (CSI: Channel State Information) includes channel quality indicator (CQI: Channel Quality Indicator), precoding matrix indicator (PMI: Precoding Matrix Indicator), precoding type indicator (PTI: Precoding Type Indicator), rank indicator ( RI: Rank Indicator). Each indicator (Indicator) may be expressed as an indication (Indication), but its use and meaning are the same. Also, the PUCCH format may be switched according to the UCI to be transmitted. For example, when the UCI is composed of HARQ ACK and / or SR, the UCI may be transmitted in the format 1 / 1a / 1b / 3 PUCCH (PUCCH format 1 / 1a / 1b / 3). Further, when the UCI is composed of CSI, the UCI may be transmitted using a PUCCH of format 2 / 2a / 2b (PUCCH format 2 / 2a / 2b). The PUCCH format 1 / 1a / 1b includes a shortened format (Shortened format) punctured by one symbol and a standard format (Normal format) that is not punctured in order to avoid collision with the SRS. For example, when simultaneous transmission of PUCCH and SRS is effective in the same subframe, PUCCH format 1 / 1a / 1b is transmitted in a shortened format in the SRS subframe. When simultaneous transmission of PUCCH and SRS is not valid in the same subframe, PUCCH format 1 / 1a / 1b is transmitted in the standard format in the SRS subframe. In that case, even if transmission of SRS arises, SRS does not need to be transmitted.

The CSI report (CSI report) uses periodic CSI report (P-CSI reporting) that reports channel state information and the DCI format when an event condition for triggering the CSI report is satisfied periodically or There is an aperiodic CSI report (A-CSI reporting) for reporting channel state information when a CSI report is requested by a CSI request transmitted in this manner. Periodic CSI reporting is performed on PUCCH or PUSCH, and aperiodic CSI reporting is performed on PUSCH. When instructed based on information (CSI request) included in the DCI format, the terminal device 2 can also transmit CSI without uplink data on the PUSCH. That is, P-CSI is transmitted using PUCCH or PUSCH, and A-CSI is transmitted using PUSCH. When the CSI report is requested based on information (CSI request) included in the DCI format, the terminal device 2 can also transmit CSI (A-CSI) without uplink data on the PUSCH.

PUCCH subframes (reporting instances) capable of CSI reporting are determined based on the period and subframe offset associated with an index (CQIPMI index, RI index) set in an upper layer. The index set in the upper layer can be set for each subframe set set for measuring CSI. When only one index is set for a plurality of subframe sets, the index may be regarded as common between the subframe sets.

For the terminal device 2 set in the transmission modes 1 to 9, one P-CSI report for each serving cell is set by higher layer signaling.

For the terminal device 2 set in the transmission mode 10, one or more P-CSI reports for each serving cell are set by higher layer signaling.

A parameter (PUCCH_format1-1_CSI_reporting_mode) in which an 8CSI-RS port is set for the terminal device 2 set in the

transmission mode

9 or 10 and the single PMI reporting mode (mode 1-1) is set by the higher layer signaling in the wideband CQI. ) To set submode 1 or submode 2.

For terminal-selected subband CQI (UE-selected） subband CQI), the CQI report in a subframe of a serving cell indicates the channel quality in a specific part (part) of the serving cell bandwidth indicated as the bandwidth part. It is a report.

The CSI report type supports the PUCCH CSI report mode. The CSI report type may be referred to as PUCCH reporting type (PUCCH reporting type). Type 1 reporting supports CQI feedback for terminal selection subbands. Type 1a reporting supports subband CQI and a second PMI feed bank. Type 2, type 2b, and type 2c reports support wideband CQI and PMI feedback. Type 2a reports support wideband PMI feedbanks. Type 3 reports support RI feedback. Type 4 reports support wideband CQI. Type 5 reports support RI and wideband PMI feedback. Type 6 reports support RI and PTI feedback.

The uplink reference signal (UL-RS: Uplink Reference Signal) is a demodulation reference signal (DMRS: Demodulation) used by the base station apparatus 1 to demodulate the physical uplink control channel PUCCH and / or the physical uplink shared channel PUSCH. Reference Signal) and the sounding reference signal (SRS: Sounding Reference Signal) used mainly by the base station apparatus 1 to estimate the uplink channel state. In addition, the sounding reference signal is requested to be transmitted by a periodic sounding reference signal (P-SRS: Periodic SRS) set to be periodically transmitted by an upper layer and an SRS request included in the downlink control information format. Aperiodic sounding reference signal (A-SRS: Aperiodic SRS). Here, the uplink reference signal may be referred to as an uplink reference signal, an uplink pilot signal, or an uplink pilot channel.

Note that these uplink reference signal sequences may be generated based on pseudo-random sequences. Also, these uplink reference signal sequences may be generated based on Zadoff-Chu sequences. In addition, these uplink reference signal sequences may be generated based on a gold sequence. In addition, these uplink reference signal sequences may be pseudo-random sequences, Zadoff-Chu sequences, or gold sequence variants / modifications.

Also, the periodic sounding reference signal may be referred to as a periodic sounding reference signal or a trigger type 0 sounding reference signal (Trigger Type 0 SRS). In addition, the aperiodic sounding reference signal may be referred to as an aperiodic sounding reference signal or a trigger type 1 sounding reference signal (Trigger Type 1 SRS).

Furthermore, A-SRS uses a signal specialized for uplink channel estimation (for example, sometimes referred to as trigger type 1a SRS) and channel reciprocity in TDD in cooperative communication. The channel state (CSI, CQI, PMI, RI) may be divided into signals (for example, sometimes referred to as trigger type 1b SRS) used to cause the base station apparatus 1 to measure. DMRS is set corresponding to each of PUSCH and PUCCH. DMRS is time-multiplexed in the same subframe as PUSCH or PUCCH and transmitted.

Also, DMRS may have a different time multiplexing method for PUSCH and PUCCH. For example, DMRS for PUSCH is arranged in one symbol in one slot composed of 7 symbols, whereas DMRS for PUCCH is arranged in three symbols in one slot composed of 7 symbols.

Also, SRS is notified of various parameters (bandwidth, cyclic shift, transmission subframe, etc.) by higher layer signaling. In addition, in SRS, a subframe in which SRS is transmitted is determined based on information related to a transmission subframe included in the SRS setting notified by higher layer signaling. Information related to transmission subframes includes information set specifically for a cell (shared information) and information set specifically for a terminal device (dedicated information and individual information). The information set in a cell-specific manner includes information indicating a subframe in which the SRS shared by all the terminal devices 2 in the cell is transmitted. Further, the information set specifically for the terminal device includes information indicating a subframe offset and a periodicity that are a subset of the subframes set specific to the cell. With these pieces of information, the terminal device 2 can determine a subframe in which an SRS can be transmitted (sometimes referred to as an SRS subframe or an SRS transmission subframe). In addition, when transmitting a PUSCH in a subframe in which an SRS set specifically for a cell is transmitted, the terminal apparatus 2 punctures the PUSCH time resource by the amount of the symbol for which the SRS is transmitted, and the PUSCH is transmitted using the time resource. Can be sent. As a result, it is possible to avoid collision between PUSCH transmission and SRS transmission between the terminal devices 2. The terminal device 2 that transmits PUSCH can prevent characteristic deterioration. Moreover, channel estimation accuracy can be ensured for the terminal device 2 that transmits the SRS. Here, the information set uniquely for the terminal device may be set independently for P-SRS and A-SRS.

For example, the first uplink reference signal is periodically transmitted based on the set transmission subframe when various parameters are set by higher layer signaling. In addition, the second uplink reference signal is aperiodically transmitted when a transmission request is indicated by a field (SRS request) related to the transmission request for the second uplink reference signal included in the downlink control information format. Sent. When the SRS request included in a certain downlink control information format indicates an index (value) corresponding to positive or positive, the terminal device 2 transmits an A-SRS in a predetermined transmission subframe. Further, when the detected SRS request indicates an index (value) corresponding to negative or negative, the terminal device 2 does not transmit an A-SRS in a predetermined subframe. Note that information (shared parameters, shared information) set for each cell is notified using system information or a dedicated control channel (DCCH: “Dedicated Control Channel”). In addition, information (dedicated parameters, individual parameters, dedicated information, and individual information) set uniquely for the terminal device is notified using a shared control channel (CCCH: “Common” Control “Channel”). Such information may be notified by an RRC message. The RRC message may be notified by an upper layer.

A physical random access channel (PRACH: “Physical Random Access Channel”) is a channel used to notify a preamble sequence and has a guard time. The preamble sequence is configured so as to express 6-bit information by preparing 64 types of sequences. The physical random access channel is used as a means for accessing the base station device 1 by the terminal device 2. The terminal apparatus 2 transmits a radio resource request when a physical uplink control channel is not set for a scheduling request (SR: Scheduling Request) and transmission timing adjustment information necessary for matching the uplink transmission timing with the reception timing window of the base station apparatus. A physical random access channel is used to request the base station apparatus 1 for timing advance (also referred to as TA: “Timing” Advance).

Specifically, the terminal device 2 transmits a preamble sequence using the radio resource for the physical random access channel set by the base station device 1. The terminal device 2 that has received the transmission timing adjustment information sets a transmission timing timer that measures the effective time of the transmission timing adjustment information that is commonly set by the broadcast information (or set individually by the layer 3 message), The uplink state is managed while the transmission timing timer is valid (during time measurement) during the transmission timing adjustment state, and outside the valid period (during stop), the transmission timing is not adjusted (transmission timing is not adjusted). The layer 3 message is a control plane (C-plane: Control-plane) message exchanged in the radio resource control (RRC: Radio ２ Resource 基地 Control) layer between the terminal device 2 and the base station device 1, and is RRC signaling or RRC message. Used interchangeably with RRC signaling may also be referred to as higher layer signaling or dedicated signaling.

The random access procedure includes two random access procedures, a contention-based random access procedure (Contention-based Random Access procedure) and a non-contention-based random access procedure (Non-contention-based Random access procedure). The contention-based random access procedure is a random access in which a collision may occur between a plurality of terminal devices 2.

Further, the non-contention based random access procedure is a random access in which no collision occurs between a plurality of terminal devices 2.

The non-contention-based random access procedure is composed of three steps, and a random access preamble assignment (Random Access Preamble assignment) is notified from the base station apparatus 1 to the terminal apparatus 2 by downlink dedicated signaling. . At that time, the random access preamble assignment is transmitted by the source base station apparatus (Source eNB) for the handover, in which the base station apparatus 1 allocates a non-contention random access preamble to the terminal apparatus 2, and the target base station apparatus In the case of a handover command generated by (Target eNB) or downlink data arrival, it is signaled by PDCCH.

The terminal device 2 that has received the random access preamble assignment transmits a random access preamble (message 1) using the RACH in the uplink. At that time, the terminal device 2 transmits the allocated non-contention random access preamble.

The base station apparatus 1 that has received the random access preamble transmits a random access response to the terminal apparatus 2 using downlink data (DL-SCH: Downlink Shared Channel). In addition, the information transmitted in the random access response includes an initial uplink grant (random access response grant) and timing adjustment information (Timing Alignment information) for handover, timing adjustment information for downlink data arrival, and a random access preamble identifier. included. The downlink data may be referred to as downlink shared channel data (DL-SCH data).

Here, the non-contention based random access procedure is applied to handover, downlink data arrival (Downlink data arrival during RRC_CONNECTED requiring random access procedure), positioning (For positioning purpose during RRC_CONNECTED requiring random access procedure) Is done. The contention-based random access procedure includes initial access from RRC_IDLE (Initial access to RRC_IDLE), re-establishment of RRC connection (RRC connection to reestablishment procedure), handover, downlink data arrival, uplink data arrival (Uplink data to arrival to RRC_CONNECTED applied to requiring (random) access (procedure).

The random access procedure according to the present embodiment is a contention-based random access procedure. An example of a contention based random access procedure will be described.

The terminal device 2 acquires the system information block type 2 (SIB2) transmitted by the base station device 1. SIB2 is a setting (common information) common to all terminal apparatuses 2 (or a plurality of terminal apparatuses 2) in a cell. For example, the common settings include PRACH settings.

The terminal device 2 randomly selects a random access preamble number. Also, the terminal device 2 transmits a random access preamble (message 1) of the selected number to the base station device 1 using the PRACH. The base station apparatus 1 estimates uplink transmission timing using a random access preamble.

The base station apparatus 1 transmits a random access response (message 2) using PDSCH. The random access response includes a plurality of pieces of information for the random access preamble detected by the base station device 1. For example, the plurality of pieces of information include a random access preamble number, a Temporary C-RNTI, a TA command (Timing Advance Command), and a random access response grant.

The terminal device 2 transmits (initial transmission) uplink data (message 3) using PUSCH scheduled using the random access response grant. The uplink data includes an identifier (information indicating Initial UE-Identity or C-RNTI) for identifying the terminal device 2.

When the decoding of the uplink data fails, the base station apparatus 1 instructs retransmission of the uplink data using the DCI format to which the CRC parity bits scrambled by the Temporary C-RNTI are added. When the terminal apparatus 2 is instructed to retransmit uplink data by the DCI format, the terminal apparatus 2 uses the same uplink for the PUSCH scheduled using the DCI format to which the CRC parity bit scrambled by the Temporary C-RNTI is added. Resend link data.

In addition, when the decoding of the uplink data fails, the base station apparatus 1 can instruct retransmission of the uplink data using PHICH (NACK). When the terminal apparatus 2 is instructed to retransmit uplink data by the NACK, the terminal apparatus 2 retransmits the same uplink data using the PUSCH.

The base station apparatus 1 is able to know which terminal apparatus 2 was transmitting the random access preamble and the uplink data by successfully decoding the uplink data and acquiring the uplink data. That is, the base station apparatus 1 cannot know which terminal apparatus 2 is transmitting the random access preamble and the uplink data before successfully decoding the uplink data.

When the base station apparatus 1 receives the message 3 including the InitialUE-Identity, the base station apparatus 1 uses the PDSCH to transmit the contention resolution identifier (contention resolution identity) (message 4) generated based on the received InitialUE-Identity. Transmit to device 2. When the received contention resolution identifier matches the transmitted InitialUE-Identity, the terminal device 2 considers (1) that the contention resolution of the random access preamble has succeeded, and (2) Temporary C- The value of RNTI is set to C-RNTI, (3) Temporary C-RNTI is discarded, and (4) Random access procedure is considered to have been completed correctly.

Further, when the base station apparatus 1 receives the message 3 including the information indicating the C-RNTI, the base station apparatus 1 converts the DCI format (message 4) to which the CRC parity bit scrambled by the received C-RNTI is added into the terminal apparatus 2 Send to. When the terminal device 2 decodes the DCI format to which the CRC parity bit scrambled by C-RNTI is added, the terminal device 2 considers (1) that the contention resolution of the random access preamble has succeeded, and (2) Temporary C. -Discard the RNTI and (3) consider the random access procedure completed correctly.

That is, the base station apparatus 1 schedules PUSCH using a random access response grant as part of a contention-based random access procedure (as part of contention based random access procedure).

The terminal device 2 transmits uplink data (message 3) using PUSCH scheduled using a random access response grant. That is, the terminal device 2 performs transmission on the PUSCH corresponding to the random access response grant as part of the contention-based random access procedure.

Also, the base station apparatus 1 schedules PUSCH using a DCI format to which a CRC scrambled by Temporary C-RNTI is added as part of a contention-based random access procedure. Further, the base station apparatus 1 schedules / instructs transmission on the PUSCH using PHICH (NACK) as part of the contention-based random access procedure.

The terminal device 2 transmits (retransmits) the uplink data (message 3) using the PUSCH scheduled using the DCI format to which the CRC scrambled by the Temporary C-RNTI is added. Also, the terminal device 2 transmits (retransmits) uplink data (message 3) using the scheduled PUSCH in response to the reception of PHICH. That is, the terminal device 2 performs transmission on the PUSCH corresponding to retransmission of the same uplink data (transport block) as part of the contention-based random access procedure.

In the TDD scheme, the base station apparatus 1 may transmit the PCFICH, PHICH, PDCCH, EPDCCH, PDSCH, synchronization signal, and downlink reference signal in the DwPTS of the special subframe. Moreover, the base station apparatus 1 does not need to transmit PBCH in DwPTS of a special subframe.

Further, in the TDD scheme, the terminal device 2 may transmit PRACH and SRS in the UpPTS of the special subframe. Moreover, the terminal device 2 does not need to transmit PUCCH, PUSCH, and DMRS in UpPTS of a special subframe.

Further, in the TDD scheme, the terminal device 2 may transmit PUCCH and / or PUSCH and / or DMRS in the UpPTS of the special subframe when the special subframe is configured only by GP and UpPTS. .

Hereinafter, the logical channel will be described. The logical channel is used to transmit RRC messages and information elements. Also, the logical channel is transmitted on the physical channel via the transport channel.

Broadcast control channel (BCCH: “Broadcast Control Channel”) is a logical channel used for broadcasting system control information. For example, system information and information necessary for initial access are transmitted using this channel. MIB (Master Information Block) and SIB1 (System Information Block Type 1) are transmitted using this logical channel.

The shared control channel (CCCH: “Common Control Channel”) is a logical channel used to transmit control information between a network and a terminal device that does not have an RRC connection. For example, terminal-specific control information and setting information are transmitted using this logical channel.

The dedicated control channel (DCCH: “Dedicated Control Channel”) is a logical channel used to transmit dedicated control information (individual control information) bidirectionally between the terminal device 2 having the RRC connection and the network. For example, cell-specific reconfiguration information is transmitted using this logical channel.

Signaling using CCCH or DCCH may be collectively referred to as RRC signaling.

Information regarding uplink power control is notified as information notified as broadcast information, information notified as information shared between terminal devices 2 in the same cell (shared information), and dedicated information specific to the terminal device. And information. The terminal device 2 sets transmission power based on only information notified as broadcast information, or information notified as broadcast information / shared information and information notified as dedicated information.

The radio resource control setting sharing information may be notified as broadcast information (or system information). Further, the radio resource control setting shared information may be notified as dedicated information (mobility control information).

Radio resource setting includes random access channel (RACH) setting, broadcast control channel (BCCH) setting, paging control channel (PCCH) setting, physical random access channel (PRACH) setting, physical downlink shared channel (PDSCH) setting, physical uplink Link shared channel (PUSCH) setting, physical uplink control channel (PUCCH) setting, sounding reference signal (SRS) setting, setting related to uplink power control, setting related to uplink cyclic prefix length, and the like. That is, the radio resource setting is set to notify a parameter used for generating a physical channel / physical signal. The notified parameter (information element) may be different between the case of being notified as broadcast information and the case of being notified as reset information.

Information required to set parameters for various physical channels / physical signals (PRACH, PUCCH, PUSCH, SRS, UL DMRS, CRS, CSI-RS, PDCCH, PDSCH, PSS / SSS, UERS, PBCH, PMCH, etc.) The elements are shared setting information (or set of shared parameters and shared parameters) shared between the terminal apparatuses 2 in the same cell, and dedicated setting information (or set of dedicated parameters and dedicated parameters) set for each terminal apparatus 2. Consists of. The sharing setting information may be transmitted as system information. Further, the share setting information may be transmitted as dedicated information when resetting. These settings include parameter settings. The parameter setting includes setting of a parameter value. The parameter setting includes setting of an index value when the parameter is managed in a table.

Information related to the parameters of the physical channel is transmitted to the terminal device 2 using an RRC message. That is, the terminal device 2 sets resource allocation and transmission power of each physical channel based on the received RRC message. The RRC message includes a broadcast channel message, a multicast channel message, a paging channel message, a downlink channel message, an uplink channel message, and the like. Each RRC message may be configured to include an information element (IE: “Information” element). The information element may include information corresponding to a parameter. The RRC message may be referred to as a message. A message class is a set of one or more messages. The message may include an information element. Information elements include an information element related to radio resource control, an information element related to security control, an information element related to mobility control, an information element related to measurement, and an information element related to multimedia broadcast multicast service (MBMS: Multimedia Broadcast Multicast Service). The information element may include a lower information element. The information element may be set as a parameter. The information element may be defined as control information indicating one or more parameters. Further, the RRC message may be transmitted using system information.

The information element (IE: Information Element) is used to specify (specify and set) parameters for various channels / signals / information in system information (SI: System Information) or dedicated signaling (Dedicated Signaling). An information element includes one or more fields. An information element may be composed of one or more information elements. The field included in the information element may be referred to as a parameter. That is, the information element may include one type (one) or more parameters. Also, the terminal device 2 performs radio resource allocation control, uplink power control, transmission control, and the like based on various parameters. System information may be defined as an information element.

An information element may be set in the field constituting the information element. A parameter may be set in a field constituting the information element.

The RRC message includes one or more information elements. An RRC message in which a plurality of RRC messages are set is referred to as a message class.

Parameters relating to uplink transmission power control notified to the terminal apparatus 2 using system information include standard power for PUSCH, standard power for PUCCH, propagation path loss compensation coefficient α, and a list of power offsets set for each PUCCH format. , There is a power offset for the preamble and message 3. Further, the parameters related to the random access channel notified to the terminal device 2 using the system information include a parameter related to the preamble, a parameter related to transmission power control of the random access channel, and a parameter related to transmission control of the random access preamble. These parameters are used at the time of initial access or reconnection / re-establishment after a radio link failure (RLF: RLRadio Link Failure) occurs.

The information used for setting the transmission power may be notified to the terminal device 2 as broadcast information. Further, the information used for setting the transmission power may be notified to the terminal device 2 as shared information. Moreover, the information used for setting the transmission power may be notified to the terminal device 2 as dedicated information (individual information).

(Embodiment)
Hereinafter, embodiments of the present invention will be described. The communication system in the present embodiment includes a base station device 1 (hereinafter, access point, point, transmission point, reception point, cell, serving cell, transmission device, reception device, transmission station, reception station, transmission antenna group, transmission antenna port group. , Receiving antenna group, receiving antenna port group, communication device, communication terminal, also called eNodeB), primary base station device (macro base station device, first base station device, first communication device, serving base station) Device, anchor base station device, master base station device, first access point, first point, first transmission point, first reception point, macro cell, first cell, primary cell, master cell, master small Also referred to as a cell). The primary cell and the master cell (master small cell) may be configured independently (individually). Furthermore, the communication system in the present embodiment includes a secondary base station apparatus (RRH (Remote Radio Head), a remote antenna, an extended antenna, a distributed antenna, a second access point, a second point, a second transmission point, a second transmission point, Reception points, reference points, low power node equipment (LPN: Low Power Node), micro base station equipment, pico base station equipment, femto base station equipment, small base station equipment, local area base station equipment, phantom base station equipment , Home (indoor) base station devices (Home eNodeB, Home NodeB, HeNB, HNB), second base station device, second communication device, cooperative base station device group, cooperative base station device set, cooperative base station device , Micro cell, pico cell, femto cell, small cell, phantom cell, local area, second cell, also called secondary cell) Also good. The communication system according to the present embodiment includes a terminal device 2 (hereinafter, a mobile station, a mobile station device, a mobile terminal, a reception device, a transmission device, a reception terminal, a transmission terminal, a third communication device, a reception antenna group, a reception antenna) Antenna port group, transmission antenna group, transmission antenna port group, user equipment, and user terminal (UE: User Equipment). Here, the secondary base station apparatus may be shown as a plurality of secondary base station apparatuses. For example, the primary base station apparatus and the secondary base station apparatus use a heterogeneous network arrangement, and part or all of the coverage of the secondary base station apparatus is included in the coverage of the primary base station apparatus, and communication with the terminal apparatus is possible. It may be done.

In addition, the communication system according to the present embodiment includes a base station device 1 and a terminal device 2. A single base station apparatus 1 may manage one or more terminal apparatuses 2. The single base station apparatus 1 may manage one or more cells (serving cell, primary cell, secondary cell, femto cell, pico cell, small cell, phantom cell). Moreover, the single base station apparatus 1 may manage one or more frequency bands (component carrier, carrier frequency). A single base station apparatus 1 may manage one or more low-power base station apparatuses (LPN: “Low” Power “Node”). Moreover, the single base station apparatus 1 may manage one or more home (indoor) base station apparatuses (HeNB: Home eNodeB). A single base station apparatus 1 may manage one or more access points. The base station devices 1 may be connected by wire (optical fiber, copper wire, coaxial cable, etc.) or wirelessly (X2 interface, X3 interface, Xn interface, etc.). That is, between a plurality of base station apparatuses 1, communication may be performed at high speed (no delay) using an optical fiber (Ideal backhaul), and communication may be performed at low speed using an X2 interface (Non ideal backhaul). At that time, various information of the terminal device 2 (setting information, channel state information (CSI), function information of the terminal device 2 (UE capability, UE-EUTRA-Capability), information for handover, etc.) may be communicated. Good. The plurality of base station devices 1 may be managed by a network. Moreover, the single base station apparatus 1 may manage one or more relay station apparatuses (Relay).

In addition, the communication system according to the present embodiment may realize cooperative communication (CoMP: “Coordination” Multiple ”Points) with a plurality of base station apparatuses, low-power base station apparatuses, or home base station apparatuses. That is, the communication system according to the present embodiment may perform dynamic point selection (DPS: “Dynamic Point Selection”) that dynamically switches a point (transmission point and / or reception point) to communicate with the terminal device 2. Further, the communication system according to the present embodiment may perform cooperative scheduling (CS: CoordinatedordinateScheduling) and cooperative beamforming (CB: Coordinated Beamforming). In addition, the communication system according to the present embodiment may perform joint transmission (JT: Joint Transmission) and joint reception (JR: Joint Reception).

Also, a plurality of low-power base station apparatuses or small cells arranged in the vicinity may be clustered (clustered or grouped). The plurality of clustered low-power base station apparatuses may notify the same setting information. A clustered small cell region (coverage) may be referred to as a local area.

The group to which the small cell belongs includes a master cell group (MCG: “Master Cell Group”) and a secondary cell group (SCG: “Secondary Cell Group”). The master cell group is a group of serving cells related to the master base station apparatus (MeNB). The secondary cell group is a group of serving cells related to the secondary base station apparatus (SeNB). The MAC entity (MAC entity) on the terminal device 2 side is set for each cell group. MCG and SCG may be operated in the same or different duplex schemes. In addition, the SeNB holds at least a special cell that can perform PUCCH transmission. In addition, the special cell may be provided with functions unique to other primary cells. That is, the special cell may play the same role as the primary cell in the SCG. For example, in a special cell, UCI may be transmitted to SeNB using PUCCH and PUSCH. In the special cell, a UCI transmission rule or a P-CSI dropping rule may be applied.

In downlink transmission, the base station apparatus 1 may be referred to as a transmission point (TP: “Transmission” Point). Further, in uplink transmission, the base station apparatus 1 may be referred to as a reception point (RP: “Reception” Point). Also, the downlink transmission point and the uplink reception point may be path loss reference points (Pathloss Reference Point, Reference Point) for downlink path loss measurement. Further, the reference point for path loss measurement may be set independently of the transmission point and the reception point.

Also, a small cell, a phantom cell, or a local area cell may be set as the third cell. Further, the small cell, the phantom cell, and the local area cell may be reset as the primary cell. Further, the small cell, the phantom cell, and the local area cell may be reset as a secondary cell. The small cell, phantom cell, and local area cell may be reconfigured as a serving cell. Further, the small cell, the phantom cell, and the local area cell may be included in the serving cell.

The base station apparatus 1 capable of configuring a small cell may perform intermittent reception (DRX: “Discrete Reception”) or intermittent transmission (DTX: “Discrete Transmission”) as necessary. Moreover, the base station apparatus 1 which can comprise a small cell may perform ON / OFF of the power supply of one part apparatus (for example, transmission part and a receiving part) intermittently or semi-statically.

An independent identifier (ID: Identity, Identifier) may be set for the base station device 1 constituting the macro cell and the base station device 1 constituting the small cell. That is, the identifier of the macro cell and the small cell may be set independently. For example, when a cell-specific reference signal (CRS: “Cell specific Reference Signal”) is transmitted from a macro cell and a small cell, even if the transmission frequency and the radio resource are the same, they may be scrambled with different identifiers. The cell-specific reference signal for the macro cell may be scrambled with a physical layer cell ID (PCI: Physical layer Cell Identity), and the cell-specific reference signal for the small cell may be scrambled with a virtual cell ID (VCI: Virtual Cell Identity). The macro cell may be scrambled with a physical layer cell ID (PCI: Physical layer Cell Identity), and the small cell may be scrambled with a global cell ID (GCI: Global Cell Identity). The macro cell may be scrambled with the first physical layer cell ID, and the small cell may be scrambled with the second physical layer cell ID. The macro cell may be scrambled with the first virtual cell ID, and the small cell may be scrambled with the second virtual cell ID. Here, the virtual cell ID may be an ID set in the physical channel / physical signal. The virtual cell ID may be an ID set independently of the physical layer cell ID. The virtual cell ID may be an ID used for scrambling a sequence used for a physical channel / physical signal.

In addition, some physical channels / physical signals may not be transmitted in a component carrier corresponding to a serving cell or a small cell set as a small cell or a small cell. For example, a cell-specific reference signal (CRS: “Cell specific Reference Signal (s)) and a physical downlink control channel (PDCCH:“ Physical ”Downlink“ Control ”Channel) may not be transmitted. In addition, a new physical channel / physical signal may be transmitted in a component cell corresponding to a serving cell or a small cell set as a small cell or a small cell.

Further, the base station device 1 configuring the small cell transmits a signal (for example, a discovery signal or a discovery reference signal) for detecting / measuring the small cell, and is transmitted to the terminal device 2 from a nearby small cell. May be detected. The terminal device 2 may notify the terminal device 2 of setting information regarding an appropriate small cell based on the detection result, and may establish a connection between the terminal device 2 and the small cell. For example, the terminal device 2 may perform discovery signal reception power measurement (RSRP measurement). Further, the terminal device 2 may perform time / frequency synchronization using a discovery signal. In addition, the base station apparatus 1 may notify the terminal apparatus 2 of information regarding the setting of the small cell and / or information regarding the setting of the discovery signal using higher layer signaling or L1 / L2 signaling. Good. In addition, the base station apparatus 1 transmits, to the terminal apparatus 2, information related to the setting of pseudo-colocation (QCL: Quasi Co-Location) between the discovery signal and other existing signals, to upper layer signaling and L1 / L2 signaling. May be used for notification. At this time, a set of parameters related to the setting of pseudo collocation (information on setting of plural sets and a plurality of pseudo collocations) is set (notified) using higher layer signaling in advance, and L1 / L2 signaling is performed. May be used to specify one of a plurality of sets.

In this embodiment, the terminal device 2 that performs cell aggregation (carrier aggregation) is applied with different frame structure types (FDD (type 1) and TDD (type 2)) in the primary cell and at least one secondary cell. If the terminal device 2 does not have a function (performance and capability) for simultaneous transmission / reception between the bands supported by the primary cell and the secondary cell, the primary cell and the secondary cell do not perform transmission / reception simultaneously.

Next, physical resource mapping (mapping to physical resources) for PUCCH will be described. Physical resource block number _{n PRB} used for the PUCCH transmission in slot _{n s} is given by Equation (1).

... (1)
The variable m depends on the PUCCH format. For PUCCH formats 1, 1a, 1b, it is given by equation (2).

... (2)
Also, for PUCCH formats 2, 2a, 2b, it is given by equation (3).

... (3)
In addition, PUCCH format 3 is given by Equation (4).

(4)
Here, N ^UL _RB is an uplink bandwidth (ul-Bandwidth) represented by a resource block. The variable N ⁽²⁾ _RB is a bandwidth represented by resource blocks used by transmission of PUCCH format 2 / 2a / 2b in each slot. Variable N ⁽¹⁾ _CS is the cyclic used for PUCCH format 1 / 1a / 1b in the resource block used for the mix of PUCCH format 1 / 1a / 1b and PUCCH format 2 / 2a / 2b The number of shifts. N ⁽¹⁾ The value of _CS is an integer multiple of Δ ^PUCCH _shift set in the range of {0, 1,..., 7}. N ⁽²⁾ _RB , N ⁽¹⁾ _CS , and Δ ^PUCCH _shift are given by higher layers (or higher layer signaling), respectively. N ⁽²⁾ _RB ≧ 0 is satisfied.

Further, when N ⁽¹⁾ _CS = 0, the terminal device 2 may consider that there is no resource block in which the PUCCH format 1 / 1a / 1b and the PUCCH format 2 / 2a / 2b are mixed.

Also, at most one resource block in each slot supports a mix of PUCCH format 1 / 1a / 1b and PUCCH format 2 / 2a / 2b.

Resources used for transmission of PUCCH format 1 / 1a / 1b, PUCCH format 2 / 2a / 2b, and PUCCH format 3 are non-negative indexes n ^{(1, -p)} _PUCCH and n ^{(2, -p)} _{PUCCH, respectively.} , N ^{(3, p)} _PUCCH . Note that the index n ^{(2, p)} _PUCCH of the PUCCH format 2 / 2a / 2b satisfies Expression (5).

... (5)

Here, the uplink bandwidth may be set based on the system bandwidth. Further, the uplink bandwidth may be set based on a channel bandwidth (Channel bandwidth). Further, the uplink bandwidth may be set based on transmission bandwidth setting (Transmission bandwidth configuration). The system bandwidth, channel bandwidth, and transmission bandwidth setting may be individually set for the uplink and the downlink. The system bandwidth, the channel bandwidth, and the transmission bandwidth are set for either the uplink or the downlink, and may be the same (common) for the uplink and the downlink. Also, the uplink bandwidth may be set using higher layer signaling. Also, the uplink bandwidth may be set using a system information block. Also, the uplink bandwidth may be set using a master information block. Also, the uplink bandwidth may be set using broadcast information. Also, the uplink bandwidth may be set using multicast information. Also, the uplink bandwidth may be set using unicast information.

FIG. 10 is an example of mapping of physical resource blocks (modulation symbols) to PUCCH. Physical resource mapping in each PUCCH format is performed using Equation (1) to Equation (5). Moreover, the physical resource for PUCCH performs inter-slot hopping.

When one serving cell is configured and PUCCH formats 1, 1a, 1b or 3 and a sounding reference signal are transmitted simultaneously, a shortened PUCCH format (Shortened PUCCH) that frees the last SC-FDMA symbol in the second slot of a subframe. format) is used.

Since physical resources for PUCCH are mapped to both ends of the component carrier, they are easily affected by leakage power from adjacent channels (physical channels used by adjacent communication carriers). Therefore, it is necessary to suppress the influence of the leakage power from the adjacent channel while improving the accuracy of communication quality in the PUCCH.

A guard band is set in a pseudo (virtual) manner for the uplink component carrier. In the first method, resource block offsets (N _{RB_offset_low} , N _{RB_offset_high} ) are provided for n _{PRBs of} Equation (1), and physical resource mapping for PUCCH is performed using uplink component carriers (system bandwidth, channel bandwidth). Width, transmission bandwidth setting, transmission bandwidth). N _{RB_offset_low} and N _{RB_offset_high} are integers (0, 1, 2,...) _Greater than or _equal to 0, and are represented by the number of resource blocks.

Formula (6) is an example when the first method is applied to Formula (1). Resource block offset of the lower end of the physical resources _{N RB_offset_low} the upper end of the resource block offset _{N RB_offset_high} are respectively set for the PUCCH. Each offset may be set from the base station apparatus 1 to the terminal apparatus 2 using higher layer signaling (RRC signaling, dedicated signaling). Each offset may be set from the base station apparatus 1 to the terminal apparatus 2 using a system information block. Each offset may be set from the base station apparatus 1 to the terminal apparatus 2 using L1 / L2 signaling (PDCCH, DL-SCH, MAC CE, etc.). Only one of N _{RB_offset_low} and N _{RB_offset_high} may be set.

... (6)

By using the first method, when only a communication band for one component carrier (system bandwidth is 20 MHz at the maximum) can be allocated to a certain communication carrier, the communication carrier at both ends of the component carrier Interference can be reduced.

The terminal device 2 may limit physical resource mapping to the PUCCH by applying the first method, and reduce interference with adjacent channels.

Formula (7) is an example when the second method is applied to Formula (1).

... (7)

Also, the terminal apparatus 2 may limit the mapping of PUCCH physical resources by applying the second method to Equation (1) to reduce interference with adjacent channels.

In the second method, a resource block start index n _{RB_start} and a pseudo bandwidth N ^UL _QRB (QRB: Quasi Resource Block) represented by the number of resource blocks are used. The start index and pseudo bandwidth may be set using higher layer signaling (RRC signaling, dedicated signaling). In addition, the start index and the pseudo bandwidth may be set using the system information block. Also, the start index and the pseudo bandwidth may be set using L1 / L2 signaling (PDCCH, DL-SCH, MAC CE, etc.).

干渉 By making the pseudo bandwidth narrower than the uplink bandwidth, it is possible to reduce interference with adjacent channels at the upper end of the component carrier. Further, by using the start index, it is possible to reduce interference with the adjacent channel at the lower end of the component carrier. Note that the start index and the pseudo bandwidth are integers of 0 or more (0, 1, 2,...), Respectively. Also, only one of the start index and the pseudo bandwidth may be set.

Also, the terminal device 2 may limit physical resource mapping to the PUCCH by applying the third method to Equation (1) to reduce interference with adjacent channels.

Formula (8) is an example when the third method is applied to Formula (1).

... (8)
m ₁ and m ₂ are offsets with respect to m, and are integers of 0 or more. m ₁ and m ₂ may be configured using higher layer signaling (RRC signaling, dedicated signaling). Further, m ₁ and m ₂ may be set using a system information block. Also, m ₁ and m ₂ may be set using L1 / L2 signaling (PDCCH, DL-SCH, MAC CE, etc.). Also, m ₁ and m ₂ are, if not necessary, may not be set. That is, only necessary ones may be set for m ₁ and m ₂ . Note that the values set in m ₁ and m ₂ are an example, and when a negative integer can be set, the code (addition / subtraction code) shown in Equation (8) may be changed.

In addition, the terminal device 2 may limit physical resource mapping to the PUCCH by applying the fourth method to Equation (1), and may reduce interference with adjacent channels.

Formula (9) is an example when the fourth method is applied to Formula (1).

... (9)
n _{PRB_offset} (0) and n _{PRB_offset} (1) are offsets with respect to physical resource block (PRB) numbers, and are integers (0, 1, 2,...) greater than or equal to zero. Note that the value set in n _{PRB_offset} (0) and / or n _{PRB_offset} (1) is an example, and when a negative integer can be set, the code (addition / subtraction code) shown in Expression (9) is also used. It may change.

The terminal device 2 may restrict physical resource mapping to the PUCCH using any one of the first method to the fourth method by satisfying certain conditions. In other words, the terminal device 2 may perform physical resource mapping for the PUCCH by replacing Formula (1) with any of Formula (6) to Formula (9) by satisfying certain conditions. Note that the first method to the fourth method may be referred to as the first method to the fourth method.

If any of the settings of the first method to the fourth method and / or information on parameters is not set, physical resource mapping for the PUCCH without using any of the first method to the fourth method May be performed. Note that the setting and / or parameter information is not set includes that the setting and / or parameter is not set. Further, the fact that information regarding settings and / or parameters is not set includes that values are not set for the settings and / or parameters.

When the first parameter and / or the second parameter are not set (or the values of the first parameter and / or the second parameter are set to 0), the terminal device 2 Based on Equation (1), physical resource mapping for PUCCH is performed. In addition, when the base station apparatus 1 does not set the first parameter and / or the second parameter, the base station apparatus 1 performs a reception process for the PUCCH based on Expression (1).

When the first parameter and / or the second parameter is set (or the value of the first parameter and / or the second parameter is set), the terminal device 2 uses the formula (1) Based on the first parameter and / or the second parameter, physical resource mapping for the PUCCH is performed. Further, when the base station apparatus 1 also sets the first parameter and / or the second parameter, the base station apparatus 1 performs reception processing for the PUCCH based on the formula (1) and the first parameter and / or the second parameter. Do.

Note that various parameters used in the first method to the fourth method may be included in the information related to PUCCH configuration.

When the terminal apparatus 2 supporting eIMTA performs PUCCH transmission in a subframe belonging to the first subframe set, the terminal apparatus 2 performs physical resource mapping for the PUCCH using Equation (1), and performs the second subframe. When performing PUCCH transmission in subframes belonging to a frame set, physical resource mapping for PUCCH may be performed using any one of Equation (6) to Equation (9).

Further, the terminal device 2 that supports eIMTA may perform physical resource mapping on the PUCCH using any one of Equation (6) to Equation (9) when information and parameters related to eIMTA are set. Good. The terminal device 2 that supports eIMTA performs physical resource mapping for the PUCCH using Equation (1) when information and parameters related to eIMTA are not set.

In addition, when the terminal device 2 supporting PUCCH transmission in the secondary cell is permitted to transmit PUCCH in the secondary cell, the PUCCH transmission in the secondary cell is performed using any one of Equation (6) to Equation (9). Physical resource mapping for may be performed. The terminal device 2 that supports PUCCH transmission in the secondary cell performs physical resource mapping on the PUCCH using Equation (1) when PUCCH transmission in the secondary cell is not permitted. Also, the terminal device 2 that supports PUCCH transmission in the secondary cell, when the information regarding the setting and / or parameter of any of the first method to the fourth method is not set, Equation (1) Is used to perform physical resource mapping for PUCCH.

In addition, the terminal device 2 supporting communication using a plurality of cell groups, when PUCCH transmission in a special cell (a cell corresponding to the primary cell of the secondary cell group) is permitted, from Equation (6) Physical resource mapping for the PUCCH in the secondary cell may be performed using any one of Equation (9). Moreover, the terminal device 2 that supports communication using a plurality of cell groups performs physical resource mapping for the PUCCH using Equation (1) when PUCCH transmission in the special secondary cell is not permitted. . Further, the terminal device 2 that supports communication using a plurality of cell groups, when the information regarding the setting and / or parameter of any of the first to fourth methods is not set, Physical resource mapping for PUCCH is performed using (1).

In addition, when the terminal apparatus 2 supporting TDD-FDD carrier aggregation performs PUCCH transmission using a TDD cell, the terminal apparatus 2 uses any one of Expressions (6) to (9) to use the PUCCH in the secondary cell. Physical resource mapping for may be performed.

Note that the first method to the fourth method may be applied to a serving cell capable of PUCCH transmission. In addition, a serving cell to which any of the first method to the fourth method can be applied may be set using higher layer signaling. A serving cell to which any one of the first method to the fourth method can be applied may be set using L1 / L2 signaling.

In addition to the first method to the fourth method, in order to reduce intra-band interference between communication carriers, the terminal device 2 has, in addition to the standard guard band, the uplink, A pseudo guard band (virtual guard band, quasi-guard band) may be set.

FIG. 4 is a flowchart showing the procedure of the process 1 of the terminal device 2 according to the embodiment of the present invention. When the terminal device 2 performs cell aggregation in a plurality of cells, the terminal device 2 determines whether or not a plurality of cells having different frame structure types are aggregated (step S401). When a plurality of cells having different frame structure types are aggregated (S401: YES), the terminal device 2 determines whether or not a plurality of cells having different frame structure types have a function of performing transmission / reception simultaneously ( Step S402). When the terminal device 2 has a function of simultaneously transmitting / receiving in a plurality of cells of different frame structure types (S402: YES), the terminal device 2 transmits / receives simultaneously in a plurality of cells of different frame structure types in the same subframe (Step S403). When a plurality of cells having different frame structure types are not aggregated (S401: NO), that is, when a plurality of cells having the same frame structure type are aggregated, the process proceeds to processing 3. In addition, when a plurality of cells having different frame structure types do not have a function of simultaneously transmitting and receiving (S402: NO), the process proceeds to process 2.

An example of process 2 is shown below.

When a plurality of cells to which different frame structure types are applied are aggregated and there is no function (performance or capability) for simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, the terminal device 2 is a sub-cell of the primary cell. Depending on the type of frame, it is determined whether transmission / reception is performed simultaneously in the secondary cell of the same subframe.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, the subframe of the primary cell may be a downlink subframe. For example, the terminal device 2 does not transmit an uplink signal (which channel or signal including the uplink signal) in the secondary cell of the same subframe. At this time, the base station apparatus 1 does not expect an uplink signal to be transmitted from the terminal apparatus 2 in the subframe. That is, the base station apparatus 1 does not have to receive an uplink signal transmitted from the terminal apparatus 2 in the subframe.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, uplink transmission is required for the subframe of the primary cell. If it is an uplink subframe (a valid uplink subframe), the terminal apparatus 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal apparatus 2 does not expect that a downlink signal is transmitted from the base station apparatus 1 (there is downlink transmission). Therefore, in this case, the terminal device 2 may not receive the downlink signal in the secondary cell. In this case, the base station apparatus 1 does not have to transmit a downlink signal to the terminal apparatus 2 in the secondary cell.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, uplink transmission is required for the subframe of the primary cell. If it is not an uplink subframe (invalid uplink subframe), the terminal apparatus 2 may receive a downlink signal in the secondary cell of the same subframe. In this case, the base station apparatus 1 may transmit a downlink signal to the terminal apparatus 2 in the secondary cell.

Further, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal apparatus 2, cross-carrier scheduling in the primary cell (or secondary cell) is performed. If uplink transmission is requested for a subframe with a secondary cell, the terminal apparatus 2 does not expect that a downlink signal can be received in the primary cell of the same subframe. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal.

Further, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, multi-subframe scheduling in the primary cell (secondary cell) or If uplink transmission is requested for a subframe with a secondary cell by cross subframe scheduling, the terminal device 2 does not expect that a downlink signal can be received in the primary cell of the same subframe. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal. In this case, the base station apparatus 1 does not have to transmit a downlink signal to the terminal apparatus 2 in the secondary cell.

Further, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, multi-subframe scheduling in the primary cell (or secondary cell) Or if downlink transmission is shown with respect to the sub-frame of a secondary cell by cross sub-frame scheduling, the terminal device 2 will not expect that an uplink signal can be transmitted in the primary cell of the same sub-frame. That is, in this case, the terminal device 2 does not expect that uplink transmission is requested in the subframe. Therefore, in this case, the terminal device 2 does not need to transmit an uplink signal. For example, transmission of P-SRS may be dropped even if it is the same subframe as the transmission subframe of P-SRS.

Further, if a plurality of cells to which different frame structure types are applied are aggregated and there is no function of simultaneously transmitting and receiving between the plurality of cells aggregated in the terminal device 2, if the subframe of the primary cell is a special subframe The terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3. In this case, the base station apparatus 1 does not expect the PUSCH / PUCCH / PRACH formats 1 to 3 to be transmitted from the terminal apparatus 2.

Also, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of simultaneously transmitting and receiving between the plurality of cells aggregated in the terminal device 2, the downlink of the special subframe of the primary cell and the secondary cell If the subframes are the same subframe, the terminal device 2 does not expect that a downlink signal can be received in the OFDM symbol of the secondary cell that overlaps the guard period and the UpPTS in the subframe of the primary cell. In this case, the terminal device 2 may not receive the downlink signal. In this case, the terminal apparatus 2 may receive a downlink signal (for example, PDCCH) in the OFDM symbol of the secondary cell that does not overlap the guard period and the UpPTS in the subframe of the primary cell. In this case, the base station apparatus 1 may transmit the downlink signal in the OFDM symbol of the secondary cell that does not overlap the guard period and the UpPTS in the subframe of the primary cell.

Further, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal apparatus 2, the uplink of the special subframe of the primary cell and the secondary cell If the subframe is the same subframe, the terminal apparatus 2 is expected to be able to transmit an uplink signal in the SC-FDMA symbol (OFDM symbol) of the secondary cell that overlaps the guard period and DwPTS in the subframe of the primary cell. do not do. In this case, the terminal device 2 may not transmit an uplink signal. Also, in this case, the terminal apparatus 2 uses the uplink signal (for example, SRS or PRACH format 4 that can be arranged in the UpPTS in the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS. ) May be sent. Also, in this case, the base station apparatus 1 receives an uplink signal using the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, a subframe in which a certain cell is present among the plurality of cells However, when uplink transmission is requested, even if another cell is a downlink subframe, it is not expected that a downlink signal can be received in the downlink subframe. In other words, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1 in the same subframe of another cell. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal. In this case, the base station apparatus 1 does not have to transmit a downlink signal to the terminal apparatus 2.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated, there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, and there is no function of performing uplink carrier aggregation, the primary cell If uplink transmission is requested for the subframe, the terminal apparatus 2 does not simultaneously transmit an uplink signal and receive a downlink signal in the secondary cell of the same subframe. In addition, if uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), an uplink signal is transmitted in the primary cell of the same subframe. Transmission and downlink signal reception may not be performed. In this case, in the primary cell of the same subframe, the base station apparatus 1 does not need to receive the uplink signal and transmit the downlink signal.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated, there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, and there is no function of performing downlink carrier aggregation, the primary cell If uplink transmission is requested for a certain subframe, it is not expected that a downlink signal can be received in the secondary cell of the same subframe. Also, if uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the downlink signal is transmitted in the primary cell of the same subframe. Do not expect to receive. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal apparatus 2, the subframe of the primary cell is a downlink. If it is a subframe, the terminal device 2 does not transmit an uplink signal in the secondary cell of the same subframe. In this case, the base station apparatus 1 does not expect an uplink signal to be transmitted from the terminal apparatus 2 in the secondary cell of the same subframe.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, the subframe of the primary cell is a special sub If it is a frame, the terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 does not need to receive PDSCH / EPDCCH / PMCH / PRS. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of simultaneously transmitting and receiving in the downlink between the plurality of cells aggregated in the terminal device 2, the subframe of the primary cell is the uplink. If it is a subframe, the terminal device 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal device 2 does not have to receive a downlink signal.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated and there is no function of simultaneously transmitting and receiving in the downlink between the plurality of cells aggregated in the terminal device 2, the special subframe and the secondary of the primary cell If the uplink subframe of the cell is the same subframe, the terminal apparatus 2 transmits an uplink signal in the SC-FDMA symbol (OFDM symbol) of the secondary cell that overlaps the guard period and DwPTS in the subframe of the primary cell. Do not expect to be able to send. In this case, the terminal device 2 may not transmit an uplink signal. Also, in this case, an uplink signal (for example, SRS or PRACH format 4 that can be arranged in UpPTS) is transmitted in the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS. Also good.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated, and there is no function of performing simultaneous transmission / reception in the uplink of the secondary cell among the plurality of cells aggregated in the terminal device 2, the sub cell of the primary cell If the frame is a downlink subframe, the terminal apparatus 2 does not transmit an uplink signal in the secondary cell of the same subframe.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated, and there is no function of performing simultaneous transmission / reception in the uplink of the secondary cell among the plurality of cells aggregated in the terminal device 2, the sub cell of the primary cell If the frame is a special subframe, the terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 does not need to receive PDSCH / EPDCCH / PMCH / PRS. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated, and there is no function of simultaneously transmitting and receiving in the downlink of the secondary cell among the plurality of cells aggregated in the terminal device 2, the sub cell of the primary cell If the frame is an uplink subframe, the terminal apparatus 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal device 2 does not have to receive a downlink signal.

In addition, when a plurality of cells to which different frame structure types are applied are aggregated, and there is no function of simultaneously transmitting and receiving in the downlink of the secondary cell among the plurality of cells aggregated in the terminal device 2, the special of the primary cell If the subframe and the uplink subframe of the secondary cell are the same subframe, the terminal apparatus 2 uses the guard period in the subframe of the primary cell and the SC-FDMA symbol (OFDM symbol) of the secondary cell that overlaps DwPTS. Do not expect to be able to transmit uplink signals. In this case, the terminal device 2 may not transmit an uplink signal. Also, in this case, an uplink signal (for example, SRS or PRACH format 4 that can be arranged in UpPTS) is transmitted in the SC-FDMA symbol of the secondary cell that does not overlap with the guard period in the subframe of the primary cell and DwPTS. Also good.

Here, a plurality of cells to which different frame structure types are aggregated means, for example, that a cell whose frame structure type is Type 1 (FDD) and a cell whose frame structure type is Type 2 (TDD) are aggregated. Including doing. In addition, a plurality of cells to which different frame structure types are applied are, for example, a plurality of cells having a frame structure type of type 1 (FDD) and a plurality of cells having a frame structure type of type 2 (TDD). Includes aggregating cells. That is, a plurality of cells to which different frame structure types are applied means that, for example, one or more cells whose frame structure type is Type 1 (FDD) and the frame structure type is Type 2 (TDD). Aggregating one or more cells. Note that the frame structure type is an example, and the same applies when type 3 or type 4 is defined.

The terminal device 2 has a frame structure type for the primary cell of FDD, a frame structure type for at least one secondary cell of the secondary cells is TDD, and a plurality of different frame structure types aggregated in the terminal device 2. When there is no function of performing simultaneous transmission / reception between cells, the terminal device 2 does not transmit an uplink signal in an uplink subframe in a secondary cell in which TDD is set.

The terminal device 2 has a frame structure type for the primary cell of FDD, a frame structure type for at least one secondary cell of the secondary cells is TDD, and a plurality of different frame structure types aggregated in the terminal device 2. If there is no function for simultaneous transmission / reception between cells, if uplink transmission is requested for a subframe in which a primary cell exists, the terminal apparatus 2 receives a downlink signal in the secondary cell of the same subframe. You don't have to. In other words, if uplink transmission is requested for a subframe in which a primary cell exists, the terminal apparatus 2 transmits a downlink signal from the base station apparatus 1 in the secondary cell of the same subframe. Do not expect.

The terminal device 2 has a frame structure type for the primary cell of FDD, a frame structure type for at least one secondary cell of the secondary cells is TDD, and a plurality of different frame structure types aggregated in the terminal device 2. If there is no function for simultaneous transmission / reception between cells, if half duplex is supported for the FDD band of the primary cell, the terminal device 2 always transmits a downlink subframe, PDCCH, or CRS in the primary cell. Since the monitoring is not performed, when the primary cell is switched from the downlink subframe to the uplink subframe, the uplink signal may be transmitted in the secondary cell of the same subframe. Similarly, in this case, the terminal apparatus 2 does not expect that a downlink signal can be received in the secondary cell in the same subframe as the subframe for which uplink transmission is requested in the primary cell. The downlink signal may be received in the secondary cell of the same subframe as the subframe for which transmission is not requested.

The terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is FDD and at least one of the secondary cells is TDD. If there is no uplink transmission for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), there is no downlink in the primary cell of the same subframe. The link signal may not be received. In other words, when uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal apparatus 2 uses the primary cell of the same subframe. Therefore, it is not expected that a downlink signal is transmitted from the base station apparatus 1. Also, when downlink transmission is indicated for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal device 2 can be used in the primary cell of the same subframe. The uplink signal may not be transmitted.

Further, the terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is TDD and at least one of the secondary cells is FDD. If there is no subframe, if the subframe of the primary cell is a downlink subframe, no uplink signal is transmitted in the same subframe of the secondary cell.

Further, the terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is TDD and at least one of the secondary cells is FDD. If there is not, if an uplink signal is scheduled in a subframe with a primary cell, it is not expected that a downlink signal is transmitted from the base station apparatus 1 in the same subframe of the secondary cell. The terminal device 2 may receive the downlink signal in the secondary cell of the same subframe if uplink transmission is not requested in the subframe of the primary cell.

Further, the terminal device 2 has a function of simultaneously transmitting and receiving between a plurality of cells of different frame structure types aggregated in the terminal device 2 in which the primary cell is TDD and at least one of the secondary cells is FDD. If there is no uplink transmission for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the base station in the primary cell of the same subframe It is not expected that a downlink signal is transmitted from the station apparatus 1. In addition, if downlink transmission is indicated for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal apparatus 2 in the same subframe of the primary cell Does not have to transmit an uplink signal.

The terminal device 2 has a TDD UL / DL setting in which the primary cell is TDD and at least one of the secondary cells is different from the primary cell, and a plurality of different frame structure types aggregated in the terminal device 2. If there is no function for simultaneous transmission / reception between the cells, the terminal device 2 does not simultaneously transmit / receive in the primary cell and the secondary cell in the same subframe. The TDD UL / DL setting to be compared between a plurality of cells may be an uplink reference TDD UL / DL setting. Further, the TDD UL / DL setting to be compared between a plurality of cells may be a downlink reference TDD UL / DL setting. Further, the TDD UL / DL setting to be compared between a plurality of cells may be the TDD UL / DL setting transmitted by SIB1. Further, the TDD UL / DL configuration to be compared between a plurality of cells may be a TDD UL / DL configuration transmitted by RRC signaling (may be a TDD UL / DL configuration signaled by RRC). Also, one of the TDD UL / DL settings to be compared between a plurality of cells may be transmitted by SIB1, and the other may be transmitted by RRC signaling.

In addition, when the data is aggregated by a plurality of cells having the same frame structure type, if the frame structure type is FDD, transmission / reception may be performed simultaneously between cells. In addition, when aggregation is performed in a plurality of cells having the same frame structure type, if the frame structure type is TDD, transmission / reception may be performed at the same time depending on whether different TDD UL / DL settings are set between cells. You may decide whether it is good or not.

Here, uplink transmission is requested even if an uplink signal is scheduled by a grant (dynamic 送信 scheduled grant, semi-persistent scheduling grant, random access response grant, uplink grant) for uplink transmission. Good. Further, the request for uplink transmission may be a request for PUSCH or SRS by an SRS request or CSI request included in the DCI format. Further, the request for uplink transmission may mean that an uplink signal is scheduled according to a parameter set by an upper layer. Here, an uplink subframe for which uplink transmission is requested is referred to as a valid uplink subframe. An uplink subframe for which uplink transmission is not requested is referred to as an invalid uplink subframe.

Also, the effective downlink subframe may be a subframe to which PDSCH resources are allocated by the downlink grant. In addition, the effective downlink subframe may be a downlink subframe in which a transmission interval or reception interval of downlink signals and a measurement interval are set by an upper layer. For example, a bitmap may be indicated by a CSI measurement subframe set. Further, the measurement subframe pattern may indicate the bit map. The downlink subframe to be measured may be indicated by the period and the subframe offset. In the downlink subframe in which the measurement interval is not indicated by the upper layer, the terminal apparatus 2 may not expect that a downlink signal is transmitted as an invalid downlink subframe.

FIG. 5 is a flowchart showing the procedure of the process 3 of the terminal device 2 according to the embodiment of the present invention. It is determined whether or not the frame structure type of the aggregated cells is TDD (step S501). If the frame structure type of the aggregated plurality of cells is TDD (S501: YES), it is determined whether or not different TDD UL / DL settings are set among the plurality of cells (S502). When different TDD UL / DL settings are set among a plurality of cells (S502: YES), the process proceeds to process 4. When different TDD UL / DL settings are not set between multiple cells (S502: NO), that is, when the same TDD UL / DL settings are set between multiple cells, multiple cells in the same subframe In step S503, even if transmission or reception is performed at the same time, transmission and reception are not performed at the same time. When the frame structure type of the aggregated cells is not TDD (S501: NO), for example, when the frame structure type of the aggregated cells is FDD, the process proceeds to processing 5.

An example of process 4 is shown below.

When a plurality of cells with different TDD UL / DL settings are aggregated and there is no function of performing simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, the terminal device 2 may respond to the type of subframe of the primary cell. In the secondary cell of the same subframe, it is determined whether transmission / reception is performed simultaneously.

In addition, when a plurality of cells with different TDD UL / DL settings are aggregated and there is no function of simultaneously transmitting and receiving between the plurality of cells aggregated in the terminal apparatus 2, if the subframe of the primary cell is a downlink subframe, The terminal apparatus 2 does not transmit an uplink signal (which channel or signal including the uplink signal) in the secondary cell of the same subframe.

In addition, if a plurality of cells with different TDD UL / DL settings are aggregated and there is no function of simultaneously transmitting / receiving between the plurality of cells aggregated in the terminal apparatus 2, if the subframe of the primary cell is an uplink subframe, The terminal device 2 does not expect that a downlink signal can be received in the secondary cell of the same subframe. That is, in this case, the terminal device 2 does not expect a downlink signal to be transmitted from the base station device 1. Therefore, in this case, the terminal device 2 may not receive the downlink signal in the secondary cell.

In addition, when a plurality of cells with different TDD UL / DL settings are aggregated and there is no function of simultaneously transmitting and receiving between the plurality of cells aggregated in the terminal device 2, if the subframe of the primary cell is a special subframe, The terminal device 2 does not expect that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell of the same subframe. In this case, the terminal device 2 may not transmit the PUSCH / PUCCH / PRACH formats 1 to 3.

In addition, when a plurality of cells with different TDD UL / DL settings are aggregated and there is no function for simultaneous transmission / reception between the plurality of cells aggregated in the terminal device 2, the special subframe of the primary cell and the downlink sub of the secondary cell If the frames are the same subframe, the terminal device 2 does not expect that a downlink signal can be received in the OFDM symbol of the secondary cell that overlaps the guard period and the UpPTS in the subframe of the primary cell. In this case, the terminal device 2 may not receive the downlink signal. In this case, a downlink signal (for example, PDCCH) may be received in the OFDM symbol of the secondary cell that does not overlap the guard period and the UpPTS in the subframe of the primary cell.

An example of process 5 is shown below.

When the frame structure type of a plurality of cells is FDD, depending on whether uplink carrier aggregation and / or downlink carrier aggregation are applied in different FDD bands (duplex mode is FDD band) aggregated at the same time, The terminal device 2 determines whether transmission / reception can be performed simultaneously between a plurality of cells. When uplink carrier aggregation and / or downlink carrier aggregation are possible in different FDD bands aggregated at the same time, transmission and reception can be performed simultaneously in a plurality of cells in the same subframe. When half duplex is applied in different FDD bands, transmission / reception may not be performed simultaneously in a plurality of cells in the same subframe. Moreover, when the terminal device 2 has two or more wireless transmission units and / or wireless reception units (wireless transmission / reception units, RF units), transmission / reception may be performed simultaneously between a plurality of cells.

Also, the present embodiment may be applied to different bands (E-UTRA Operating Band, E-UTRA Band, Band).

Here, there is a case where a band in which the duplex mode is TDD is referred to as a TDD band, and a band in which the duplex mode is FDD is referred to as an FDD band. Similarly, a cell (carrier) whose frame structure type is FDD (type 1) is called an FDD cell (FDD carrier), and a cell (carrier) whose frame structure type is TDD (type 2) is called a TDD cell (TDD carrier). There is also.

When the terminal device 2 that performs cell aggregation has a function of performing transmission / reception simultaneously between a plurality of cells in different bands, the terminal device 2 may perform transmission / reception simultaneously in a plurality of cells in different bands in the same subframe. When there are a plurality of cells whose duplex mode is TDD, transmission and reception may be performed simultaneously even if the TDD UL / DL settings of the plurality of cells (TDD cells) are different. In cell aggregation between different bands that support TDD, whether or not cell aggregation can be performed in a plurality of TDD cells may be determined depending on whether or not a function of simultaneously transmitting and receiving is provided.

In addition, when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of simultaneously transmitting and receiving between a plurality of cells in different bands, the terminal device 2 may determine whether the subframe of the primary cell is a downlink subframe. For example, uplink signals (physical channels and physical signals) are not transmitted in the secondary cell in the same subframe.

In addition, when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of simultaneously transmitting and receiving between a plurality of cells in different bands, the terminal device 2 uses the same subframe and the subframe of the primary cell is special. If the subframe of the secondary cell is a downlink subframe in a subframe, it is not expected that PDSCH / EPDCCH / PMCH / PRS can be received in the secondary cell.

In addition, when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of simultaneously transmitting and receiving between a plurality of cells in different bands, the terminal device 2 uses the same subframe and the subframe of the primary cell is special. If the subframe of the secondary cell is a downlink subframe in the subframe, it is not expected that another signal (downlink signal) can be received by the OFDM symbol of the secondary cell overlapping the guard period of the primary cell and the UpPTS.

In addition, when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of simultaneously transmitting and receiving between a plurality of cells in different bands, the terminal device 2 is required to perform uplink transmission of the subframe of the primary cell. If it is an uplink subframe, it is not expected that a downlink signal can be received in the same subframe of the secondary cell.

Also, when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of simultaneously transmitting and receiving between a plurality of cells in different bands, the terminal device 2 is required to perform uplink transmission of the subframe of the secondary cell. If it is an uplink subframe, it is not expected that a downlink signal can be received in the same subframe of the primary cell.

That is, when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of performing transmission / reception simultaneously between a plurality of cells in different bands, the terminal device 2 is present regardless of whether it is a primary cell or a secondary cell. If there is an uplink subframe for which uplink transmission is requested in a cell, it is not necessary to receive a downlink signal in the same subframe of another cell.

In addition, when a plurality of cells in different bands are aggregated and the terminal device 2 does not have a function of performing transmission / reception simultaneously between a plurality of cells in different bands, the terminal device 2 may be a terminal regardless of whether it is a primary cell or a secondary cell. If there is no uplink subframe for which uplink transmission is requested in a cell supported by the apparatus 2, a downlink signal may be received in the same subframe.

A plurality of cells in different bands are aggregated, the terminal device 2 does not have a function of simultaneously transmitting / receiving between a plurality of cells in different bands, and does not have a function of performing uplink carrier aggregation between bands supported by the terminal device 2 In this case, if uplink transmission is requested for a subframe in which a primary cell exists, the terminal apparatus 2 does not transmit an uplink signal and receive a downlink signal in a secondary cell in the same subframe. In addition, if uplink transmission is requested for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), an uplink signal is transmitted in the primary cell of the same subframe. Is not transmitted and downlink signals are not received.

A plurality of cells in different bands are aggregated, the terminal device 2 does not have a function of simultaneously transmitting / receiving between a plurality of cells of different bands, and does not have a function of performing downlink carrier aggregation between bands supported by the terminal device 2 In this case, if uplink transmission is requested for a subframe in which a primary cell exists, the terminal device 2 may not receive a downlink signal in a secondary cell in the same subframe. In addition, if uplink transmission is requested for a subframe with a secondary cell by cross carrier scheduling (or cross subframe scheduling or multi-subframe scheduling), the terminal apparatus 2 may use the primary cell of the same subframe. In this case, it is not necessary to receive the downlink signal. In this case, the terminal device 2 does not expect that a downlink signal can be received. If downlink transmission is indicated for a subframe with a secondary cell by cross-carrier scheduling (or cross-subframe scheduling or multi-subframe scheduling), the terminal apparatus 2 may use the primary cell of the same subframe. In this case, the uplink signal need not be transmitted.

In the present embodiment, the terminal device 2, when a subframe for measuring CRS and CSI-RS for each of a plurality of cells and a subframe for monitoring PDCCH and EPDCCH are set by higher layer signaling, If uplink transmission to the first cell is not requested, the CRS or CSI-RS for the second cell may be measured to monitor the PDCCH or EPDCCH. In addition, when P-SRS transmission to the first cell occurs in the subframe, the P-SRS transmission may be dropped. In addition, if transmission of PUCCH with CSI for the first cell occurs in the subframe, priority is given to transmission of PUCCH with CSI, and CRS and CSI-RS for the second cell may not be measured. , PDCCH and EPDCCH may not be monitored. In the subframe, when transmission of PUCCH with HARQ-ACK and / or SR occurs for the first cell, priority is given to transmission of PUCCH with HARQ-ACK and / or SR, and CRS or CSI for the second cell. -RS may not be measured, and PDCCH and EPDCCH may not be monitored.

In the present embodiment, the terminal device 2 uses the same subframe in the first cell when the subframe for measuring CRS and CSI-RS and the subframe for monitoring PDCCH and EPDCCH are not set by higher layer signaling. In the uplink subframe, the second cell is a downlink subframe, and when P-SRS transmission occurs in the uplink subframe of the first cell, the PDCCH cannot be detected in the second cell. The P-SRS may be transmitted in the subframe.

In the present embodiment, when a plurality of cells in the TDD band and the FDD band are aggregated and there is no function of performing simultaneous transmission / reception in the aggregated cells, the terminal device 2 uses the FDD band (FDD band cell). May support only half-duplex (full duplex may not be supported in the FDD band). In this case, whether or not half duplex is supported for the FDD band applied to at least one of the aggregated cells is transmitted / received simultaneously in the aggregated TDD band cell and the FDD band cell. It may be associated with whether the function of performing is supported.

In addition, when a plurality of cells in the TDD band and the FDD band are aggregated and there is a function of performing transmission and reception simultaneously in the aggregated plurality of cells, the FDD band depends on whether half duplex is supported in the FDD band. You may decide half duplex or full duplex. That is, in this case, whether to support half duplex in the FDD band may be indicated independently.

The terminal device 2 for which cross carrier scheduling is set can perform uplink and downlink cross carrier scheduling. However, for the terminal device 2 that performs carrier aggregation using the TDD carrier and the FDD carrier, the communication efficiency is improved by setting the cross carrier scheduling for the uplink and the cross carrier scheduling for the downlink independently.

FIG. 6 is a flowchart showing the procedure of the process 6 of the terminal device 2 according to the embodiment of the present invention. The terminal apparatus 2 determines whether or not the function of the terminal apparatus 2 supports the function of performing cross-carrier scheduling for uplink and downlink independently (step S601). When the function of the terminal device 2 supports the function of performing cross-carrier scheduling for uplink and downlink independently (S601: YES), the terminal device 2 transmits the function information to the base station device 1. Based on the function information, the base station apparatus 1 independently sets the settings related to the cross carrier scheduling for the uplink and the downlink to the terminal apparatus 2 and transmits the setting information to the terminal apparatus 2. The terminal device 2 performs cross carrier scheduling for the uplink and the downlink based on the setting information. At this time, it is determined whether or not the cross-carrier scheduling for the uplink and the downlink is set to be performed only one (step S602). When it is set to perform only one of the cross-carrier scheduling for the uplink and the downlink (S602: YES), the terminal device 2 proceeds to processing 7. When no cross-carrier scheduling for uplink and downlink is set, or when cross-carrier scheduling for uplink and downlink is set (S602: NO), the total number of blind decoding is The set (defined) value is not exceeded. When the function of performing the cross carrier scheduling for the uplink and the downlink is not supported independently (S601: NO), the terminal apparatus 2 proceeds to process 8.

An example of processing 7 is shown below.

Of the cross carrier scheduling for the uplink and the cross carrier scheduling for the downlink, by setting only the cross carrier scheduling for one of them, the DCI format (PDCCH) including CIF and the DCI format not including CIF are divided. . Depending on whether CIF is included, the number of DCI formats with different DCI format sizes increases, and the number of blind decoding increases accordingly.

There is a function to perform cross-carrier scheduling independently for uplink and downlink, and when either one of the cross-carrier scheduling is set, scheduling is performed using a DCI format including CIF and a DCI format not including CIF. As it is done, the total number of blind decoding increases.

When performing cross-carrier scheduling for a TDD cell and cross-carrier scheduling for an FDD cell, the DCI included in the DCI format differs between the DCI format for the TDD cell and the DCI format for the FDD cell even if the DCI format is the same. There is. Therefore, since the DCI format for the TDD cell and the DCI format for the FDD cell may not have the same DCI format size, the total number of blind decoding increases. The base station apparatus 1 may perform control so that the total number of blind decoding is not increased by setting the DCI format size of the DCI format for the TDD cell and the DCI format for the FDD cell to the same size.

Also, by setting cross carrier scheduling independently for the uplink and the downlink, the uplink grant and the downlink grant are transmitted in different cells (component carriers). Therefore, blind decoding is performed independently even in DCI formats of the same format size transmitted from different cells, and the number of blind decoding increases accordingly. That is, when cross-carrier scheduling is performed on both uplink and downlink, communication control can be performed so that the total number of blind decoding does not increase. Further, when cross-carrier scheduling is not performed on both uplink and downlink, communication control can be performed so that the total number of blind decoding does not increase.

When cross-carrier scheduling is set independently for uplink and downlink, the total number of blind decoding increases unless cross-carrier scheduling is set for either one. In this case, in order not to increase the reception processing delay, it is necessary not to increase the total number of blind decoding.

For example, when only cross-carrier scheduling for the downlink is performed, the transmission / reception control may be performed so that the downlink grant for each cell is always transmitted from only one cell. The one cell may be set by an upper layer. That is, notification may be made from the base station apparatus 1 to the terminal apparatus 2 using higher layer signaling. In this case, the number of blind decoding for USS in each cell may be reduced. In this case, the number of blind decoding may be reduced by reducing the number of PDCCH candidates for USS in each cell. In this case, the blind decoding number may be reduced by limiting the aggregation level for USS in each cell. The same processing may be performed when only cross-carrier scheduling for the uplink is performed. In this case, CIF may also be included for a grant (DCI format) that does not perform cross-carrier scheduling.

When the total number of blind decoding exceeds a predetermined value by setting cross carrier scheduling independently for the uplink and the downlink, the brand decoding is limited so as not to exceed the predetermined value.

An example of process 8 is shown below.

When the terminal device 2 does not support the function of performing the cross-carrier scheduling for the uplink and the downlink independently or supports the common function of performing the cross-carrier scheduling for the uplink and the downlink. Since the DCI format for the uplink and the DCI format for the downlink always include CIF or does not include CIF, the total number of blind decoding does not exceed a predetermined value.

Next, an example of processing 9 is shown.

One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a primary cell, and PDCCH / EPDCCH may be monitored in a serving cell (for example, a TDD serving cell) in which the serving cell frame structure type is FDD and the other frame structure type for scheduling the serving cell is different (different frame structure type). If not configured, the uplink reference UL / DL configuration may not be set for the serving cell.

That is, when CIF (Carrier Indicator Field) is not set for the TDD serving cell (or for the DCI format transmitted by the TDD serving cell), the uplink reference UL / DL setting is not set in the FDD serving cell. May be. In other words, when each serving cell is self-scheduling, an uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) may not be set in the FDD serving cell.

One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a primary cell, and When the serving cell frame structure type is TDD and the other frame structure type for scheduling the serving cell is different from the serving cell, the terminal device 2 is not set to monitor the PDCCH / EPDCCH. Alternatively, the UL / DL setting of the serving cell may be an uplink reference UL / DL setting.

That is, when CIF is set for the TDD serving cell (or for the DCI format in the TDD serving cell), the uplink reference UL / DL setting may be set in the FDD serving cell. In other words, when the TDD serving cell performs cross-carrier scheduling for the FDD serving cell, an uplink reference UL / DL setting (virtual UL / DL setting) may be set for the FDD serving cell.

One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a secondary cell, and In the serving cell where the serving cell is FDD and the other frame structure type for scheduling the serving cell is different (different frame structure type), the terminal device 2 is not set to monitor the PDCCH / EPDCCH In this case, the UL / DL setting of the serving cell having a different frame structure type and the uplink reference UL / DL setting corresponding to the pair configured by the FDD serving cell are set for the serving cell. It is. This uplink reference UL / DL setting may be managed in a table. Further, the uplink reference UL / DL configuration may be set based on the UL / DL configuration of serving cells having different frame structure types. Further, the uplink reference UL / DL configuration may be a UL / DL configuration of serving cells having different frame structure types.

That is, when the FDD serving cell is a secondary cell, the uplink reference UL / DL setting for the TDD serving cell and the uplink reference UL / DL setting for the FDD serving cell may correspond to a pair configured by the TDD serving cell and the FDD serving cell. . Note that the uplink reference UL / DL configuration in this case may be defined independently from the uplink reference UL / DL configuration corresponding to the pair configured by the TDD serving cell and the TDD serving cell, or the same table. May be defined.

In the FDD serving cell and the TDD serving cell, the RTT may be set individually.

That is, when CIF is not set for the TDD serving cell and the FDD serving cell is a secondary cell, the uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual setting) is set in the FDD serving cell. RTT) may be set.

One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a secondary cell, and In the serving cell where the serving cell is FDD and the other frame structure type for scheduling the serving cell is different (different frame structure type), the terminal device 2 is not set to monitor the PDCCH / EPDCCH In this case, the uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) may not be set in the serving cell.

That is, if the FDD serving cell is a secondary cell and self-scheduling is performed, the uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) may not be set for the FDD serving cell. Good.

One or more serving cells are set for the terminal device 2 that performs TDD-FDD carrier aggregation, the frame structure type (duplex mode) of at least two serving cells is different, and the serving cell is a secondary cell, and In the serving cell in which the serving cell is TDD and the other frame structure type for scheduling the serving cell is different, if the terminal apparatus 2 is not set to monitor the PDCCH / EPDCCH, the serving cell Thus, the uplink reference UL / DL configuration corresponding to the pair configured by the UL / DL configuration of the serving cell with different frame structure type and the FDD serving cell may be set. This uplink reference UL / DL setting may be managed in a table. Moreover, this uplink reference UL / DL setting may be set based on the UL / DL setting of the serving cell. Further, the uplink reference UL / DL setting may be the UL / DL setting of the serving cell.

That is, when CIF is not set for the FDD serving cell, the uplink reference UL / DL setting for the TDD serving cell may be the TDD UL / DL setting of the TDD serving cell. In this case, the uplink reference UL / DL setting may not be set in the TDD serving cell.

That is, when CIF is not set in both the TDD serving cell and the FDD serving cell, an uplink reference UL / DL setting (virtual UL / DL setting) corresponding to a pair constituted by a plurality of serving cells is set for each serving cell. May be set. In other words, an uplink reference UL / DL configuration (virtual UL / DL configuration) may be set for each of the TDD serving cell and the FDD serving cell that perform self-scheduling. Whether or not uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) is set in a serving cell that performs self-scheduling (scheduling grant / DCI format without CIF is transmitted). May be indicated by the function information of the terminal device 2, may be indicated by the RRC message from the base station device 1 to the terminal device 2, or system information may be received from the base station device 1. Or you may notify as alerting | reporting information.

Whether the uplink reference UL / DL setting and / or the downlink reference UL / DL setting and / or the virtual UL / DL setting is applicable to the FDD cell used for TDD-FDD carrier aggregation is determined by the terminal device 2 It may be determined based on the function information. That is, the uplink reference UL / DL setting and / or the downlink reference UL / DL setting and / or the virtual UL / DL setting can be applied to the terminal device 2 for the FDD cell used for TDD-FDD carrier aggregation. In this case, the base station apparatus 1 uses the uplink reference UL / DL setting and / or the downlink reference UL / DL setting and / or the FDD cell used for TDD-FDD carrier aggregation to the terminal apparatus 2. Virtual UL / DL settings may be applied.

When the virtual TDD UL / DL setting (virtual UL / DL setting) is set in the FDD serving cell for the terminal device 2 that performs TDD-FDD carrier aggregation, the UL / DL setting of the TDD serving cell and the virtual UL / DL of the FDD serving cell The uplink reference UL / DL configuration for the FDD serving cell may be determined based on the pair configured by the DL configuration. The virtual UL / DL setting may be notified from the base station apparatus 1 to the terminal apparatus 2 using an upper layer (upper layer signaling). Further, the virtual UL / DL setting may be transmitted from the base station apparatus 1 to the terminal apparatus 2 using a certain DCI format. The virtual UL / DL configuration may also be transmitted using a DCI format with a CRC scrambled by a specific RNTI. That is, when a CRC scrambled by a specific RNTI is detected, the terminal apparatus 2 considers that a field related to virtual UL / DL setting is set in the DCI format, and performs demodulation / decoding processing. In other words, when the virtual UL / DL setting is set in a certain DCI format, the base station apparatus 1 transmits the DCI format to the terminal apparatus 2 with a CRC scrambled by a specific RNTI. The specific RNTI may be eIMTA-RNTI. Further, the specific RNTI may be TDD-RNTI. The specific RNTI may be FDD-RNTI. The specific RNTI may be TDD-FDD CA-RNTI. A specific RNTI may also be used to identify a specific DCI format. The specific RNTI may indicate that the specific DCI is set in the accompanying DCI format.

When the virtual TDD UL / DL setting (virtual UL / DL setting) is set in the FDD secondary cell for the terminal device 2 that performs TDD-FDD carrier aggregation, the UL / DL setting of the TDD primary cell and the FDD secondary cell The downlink reference UL / DL configuration for the TDD primary cell and the FDD secondary cell may be determined based on the pair configured by the virtual UL / DL configuration.

When the virtual TDD UL / DL setting (virtual UL / DL setting) is set in the FDD primary cell for the terminal device 2 that performs TDD-FDD carrier aggregation, the virtual UL / DL setting of the FDD primary cell and the TDD secondary cell The downlink reference UL / DL configuration for the FDD primary cell and the TDD secondary cell may be determined based on the pair configured by the UL / DL configuration.

When the virtual TDD UL / DL configuration (virtual UL / DL configuration) is set in the FDD serving cell for the terminal device 2 that performs TDD-FDD carrier aggregation, the UL index (uplink index) or DCI format for the FDD serving cell DAI may be set.

In addition, when the base station apparatus 1 and the terminal apparatus 2 perform TDD-FDD carrier aggregation, one or more serving cells are set in the terminal apparatus 2, and the duplex mode (frame structure type) of at least two serving cells is not the same. If not, the subframe configuration in the FDD cell may be based on the TDD UL / DL configuration set in the TDD cell. Also, UL / DL settings (uplink reference UL / DL setting, downlink reference UL / DL setting, virtual UL / DL setting, reference UL / DL setting) corresponding to the TDD cell and the FDD cell may be set. The downlink subframe for the downlink component carrier of the FDD cell may be configured based on the uplink reference UL / DL configuration and the downlink reference UL / DL configuration downlink subframe. Moreover, the uplink subframe with respect to the uplink component carrier of an FDD cell may be set based on the uplink subframe of an uplink reference UL / DL setting and a downlink reference UL / DL setting. When performing TDD-FDD carrier aggregation, monitoring of the uplink grant (PDCCH / EPDCCH, DCI format) in the FDD cell may be performed based on the uplink reference UL / DL configuration. Moreover, the downlink grant (PDCCH / EPDCCH, DCI format) monitoring in the FDD cell may be performed based on the downlink reference UL / DL configuration. That is, the subframe for monitoring the PDCCH / EPDCCH accompanying the DCI format for transmitting the TPC command may be determined based on the uplink reference UL / DL configuration. In this case, the uplink reference UL / DL setting and the downlink reference UL / DL setting may not be the same setting. When the uplink reference UL / DL configuration is set, the uplink grant may be transmitted in the downlink subframe indicated by the uplink reference UL / DL configuration. Also, the PHICH for PUSCH may be transmitted in the downlink subframe indicated by the uplink reference UL / DL configuration. When the downlink reference UL / DL configuration is set, the downlink grant may be transmitted in the downlink subframe indicated by the downlink reference UL / DL configuration. Also, HARQ response information for PDSCH may be transmitted in an uplink subframe indicated by a downlink reference UL / DL configuration.

In an FDD cell to which virtual UL / DL configuration (virtual uplink reference UL / DL configuration, virtual downlink UL / DL configuration, virtual reference UL / DL configuration) is applied, a subframe indicating a special subframe is a downlink sub It may be a frame. For example, the terminal device 2 may process the subframe # 1 and the subframe # 6 as a downlink subframe.

For the FDD cell in which the uplink reference UL / DL setting is set, the terminal device 2 performs DCI format 0/4 with the C-RNTI of the terminal device 2 or DCI format 0 for the SPS C-RNTI in each subframe. PDCCH / EPDCCH of the terminal apparatus 2 and TPC-PUSCH-RNTI of the terminal apparatus 2 may not be tried for decoding of the DCI format 3 / 3A PDCCH. That is, for the FDD cell in which the uplink reference UL / DL setting is set, the terminal device 2 performs the uplink reference UL / DL setting except in the case of DRX or when the FDD cell is deactivated. DCI format 0/4 with C-RNTI of terminal device 2 or PDCCH / EPDCCH with DCI format 0 for SPS C-RNTI and DCI format 3 / with TPC-PUSCH-RNTI of terminal device 2 Attempt to decode 3A PDCCH.

If one or more serving cells are configured in the terminal device 2 and the duplex mode of at least two configured serving cells is not the same, the TPC command for the PUSCH is transmitted by referring to the uplink reference UL / DL configuration for the serving cell c. A value to be applied (a value of K _PUSCH ) may be determined. The value of K _PUSCH corresponding to the uplink reference UL / DL configuration may be managed in a table. The value of K _PUSCH corresponding to the uplink reference UL / DL configuration may be indicated by a bitmap. The value of K _PUSCH corresponding to the uplink reference UL / DL configuration may be indicated by an offset and a period. Here, K _PUSCH is information indicating a subframe in which a TPC command applied to transmission power for PUSCH transmitted in subframe i is transmitted when performing PUSCH transmission in subframe i. For example, when K _PUSCH = 7, the terminal apparatus 2 applies the TPC command received 7 subframes before the subframe i. That is, when the terminal apparatus 2 performs PUSCH transmission in subframe i, PDCCH / EPDCCH with DCI format 0/4 for serving cell c (or PDCCH with DCI format 3 / 3A) before K _PUSCH subframes from subframe i. ) Is applied to the value obtained by the TPC command signaled in () _PUSCH of the subframe i-K _PUSCH (that is, δ _PUSCH (i-K _PUSCH ))). Similar processing may be performed for PUCCH. For example, when PUCCH transmission is performed in subframe i, a value obtained by a TPC command for PUCCH signaled on PDCCH / EPDCCH with a DCI format for serving cell c in subframes before subframe i to K _PUCCH subframe (( Subframe i-K _PUCCH δ _PUCCH (ie, δ _PUCCH ( _{iK PUCCH} )))) may be applied. Here, the uplink reference UL / DL configuration may be a TDD UL / DL configuration configured in the TDD serving cell. Further, the uplink reference UL / DL configuration may be determined based on a table set for TDD-FDD carrier aggregation. Further, the uplink reference UL / DL setting may be applied only when the duplex mode set in the primary cell is TDD. That is, when the frame structure type set in the primary cell is FDD, the uplink reference UL / DL setting may not be applied. When the uplink UL / DL configuration is not applied to the FDD cell, the value of K _PUSCH is a predetermined value. Further, the uplink reference UL / DL setting may be set based on the TDD UL / DL setting set in the TDD serving cell. That is, the uplink reference UL / DL setting may be set independently of the TDD serving cell.

In the case of an FDD secondary cell, an uplink reference UL / DL configuration and / or a downlink reference UL / DL configuration (or virtual UL / DL configuration) may be applied according to the frame structure type of the primary cell. For example, when the frame structure type of the primary cell is FDD, the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (or virtual UL / DL setting) is not applied to the FDD secondary cell. Good. Further, when the frame structure type of the primary cell is TDD, an uplink reference UL / DL setting and / or a downlink reference UL / DL setting (or virtual UL / DL setting) may be applied to the FDD secondary cell. .

When the CIF indicating the FDD serving cell (CIF corresponding to the FDD serving cell) is not set, the value of K _PUSCH for the uplink subframe in which the FDD serving cell exists is a predetermined value (for example, 4). That is, when the FDD serving cell is self-scheduling, the value of K _PUSCH is a predetermined value (for example, 4). The predetermined value may be set using RTT. The predetermined value may be set using higher layer signaling.

When the CIF indicating the FDD serving cell is set, if the frame structure type of the serving cell that schedules the FDD serving cell is FDD, the value of K _PUSCH for the uplink subframe in which the FDD serving cell exists is a predetermined value (for example, 4) It is. The predetermined value may be set using RTT. The predetermined value may be set using higher layer signaling.

In addition, when the CIF indicating the FDD serving cell is set, if the frame structure type of the serving cell that schedules the FDD serving cell is TDD, the value of K _PUSCH for the uplink subframe in which the FDD serving cell exists is applied to the FDD serving cell. It is specified based on the value of the uplink reference UL / DL configuration (virtual UL / DL configuration) and / or UL index.

FIG. 7 shows an example of the value of K _PUSCH corresponding to the uplink reference UL / DL configuration (UL-reference UL / DL configuration). For example, when the uplink reference UL / DL setting 1 is set, the value obtained by the TPC command signaled in the DCI format six subframes before is applied to the TPC command corresponding to subframe # 2. That is, K _PUSCH = 6. Further, the value obtained by the TPC command signaled in the DCI format four subframes before is applied to the TPC command corresponding to subframe # 3. That is, the value of K _PUSCH is 4. In this way, the relationship between the subframe i and K _PUSCH may be managed in a table. In this example, when uplink reference UL / DL setting 0 is set, subframes corresponding to subframe # 2 and subframe # 3 (or subframe # 7 and subframe # 8) are the same subframe. become. In order to distinguish between subframe # 2 and subframe # 3 (or subframe # 7 and subframe # 8) in the same subframe, a UL index included in the DCI format may be used. For example, when the least significant bit (LSB: Least Significant Bit) of the UL index is set to “1”, subframe # 2 (or subframe # 7) may be indicated. That is, a predetermined subframe can be specified using the UL index. If PUSCH transmission in subframe # 2 or subframe # 7 is scheduled using DCI format 0/4 with the least significant bit of the UL index set to “1”, then subframe # 2 or subframe # 7 The value of K _PUSCH in frame # 7 is 7. Further, in subframe # 2 and subframe # 7, information related to TPC command and PUSCH scheduling may be transmitted in different subframes. The base station apparatus 1 may transmit a DCI format or a TPC command for a specific subframe to the terminal apparatus 2 using the UL index.

Also, when uplink reference UL / DL configuration or RTT is applied to the FDD cell, in the uplink reference UL / DL configuration, the number of uplink subframes is larger than the number of downlink subframes ( For example, if the UL / DL setting 0 shown in FIG. 3 is used, the subframe # 2 or the subframe # 2 is determined based on the value of the least significant bit of the UL index transmitted in the DCI format 0/4. The value of K _PUSCH for PUSCH transmission in # 7 is specified. That is, in this case, if PUSCH transmission is scheduled according to the DCI format in which the least significant bit of the UL index is set to “1”, the value of K _PUSCH for PUSCH transmission in subframe # 2 or # 7 is predetermined. Is specified as a value (for example, 7). Also, the value of K _PUSCH for uplink subframes other than subframe # 2 or # 7 may be specified based on the table shown in FIG. Further, in the uplink reference UL / DL setting, the number of uplink subframes is equal to or less than the number of downlink subframes (for example, a configuration like UL / DL settings 1 to 6 shown in FIG. 3). If so, the value of K _PUSCH for a certain uplink subframe may be specified based on the table shown in FIG. When the UL index is not included in the DCI format 0/4 for the FDD cell to which the uplink reference UL / DL configuration is applied, the terminal device 2 sets the value of K _PUSCH to a predetermined value (for example, You may specify as 4).

When uplink reference UL / DL configuration (virtual UL / DL configuration) or RTT (virtual RTT) is not applied to the FDD cell, the value of K _PUSCH for a certain uplink subframe is a predetermined value (for example, 4).

If one or more serving cells are configured in the terminal device 2 and the duplex mode of at least two configured serving cells is not the same, the TPC command for the PUCCH is transmitted by referring to the downlink reference UL / DL configuration for the serving cell c. values for application to the (M and k _m) may be determined. The power control adjustment state (power control adjustment value) g (i) for the PUCCH includes the power control adjustment value g (i-1) of the subframe i−1 and the subframe i−k _m (k ₀ , k ₁ ,. k _M−1 ) and the addition value (δ _PUCCH (i−k _m )) obtained by the TPC command for the PUCCH transmitted at (M = 0) (addition value of δ _PUCCH from m = 0 to m = M−1) Obtained by sum.

Figure 8 is a downlink reference UL / DL Configuration (DL-reference UL / DL configuration ) downlink associated set corresponding to the index _{_{K: {k 0, k 1}} , ..., k m} shows an example of. A downlink subframe in which a TPC command for PUCCH is transmitted based on the DL reference UL / DL configuration is shown. In other words, it can be said that FIG. 8 shows a transmission subframe for PUCCH. That is, PUCCH transmission may be performed based on the uplink subframe set in the DL reference UL / DL configuration. In FIG. 8, the terminal apparatus 2 may transmit the PUCCH in a subframe not indicated by “−”. For example, in downlink reference UL / DL setting 0, PUCCH (or UCI using PUCCH) may be transmitted in subframe # 2, subframe # 4, subframe 7, and subframe # 9. In DL reference UL / DL setting 5, PUCCH (or UCI using PUCCH) may be transmitted only in subframe # 2.

In the terminal device 2 that performs TDD-FDD carrier aggregation, when the frame structure type of the primary cell is TDD and the frame structure type of the scheduled secondary cell is FDD, the DCI format related to the downlink (DL DCI format) Includes a 2-bit downlink DAI field and a 4-bit HARQ process number field, and a DCI format related to the uplink (UL DCI format) includes a 2-bit uplink DAI field, and a UL index. The field may not be in the DCI format for uplink.

In the terminal device 2 that performs TDD-FDD carrier aggregation, when uplink reference UL / DL setting or RTT is set for the FDD serving cell, an SRS request is made to the FDD serving cell using the DCI format 2B / 2C / 2D. May be sent. That is, when the base station apparatus 1 sets the uplink reference UL / DL setting for the FDD serving cell with respect to the terminal apparatus 2, the SRS uses the DCI format 2B / 2C / 2D for the FDD serving cell. You may send a request.

Note that RTT indicates the period (subframe) from when the terminal device 2 receives the PHICH / uplink grant until it transmits (or retransmits) the PUSCH, and transmits (or retransmits) the PUSCH. In some cases, a period (subframe) from the reception of the PHICH to the reception thereof is indicated. An RTT corresponding to each case may be set. That is, a plurality of RTTs may be set.

Also, when the uplink reference UL / DL setting or RTT is set for the FDD serving cell, the HARQ process number transmitted using the DCI format 2B / 2C / 2D may be 4 bits. That is, when the base station apparatus 1 sets the uplink reference UL / DL setting for the FDD serving cell for the terminal apparatus 2, the base station apparatus 1 uses the DCI format 2B / 2C / 2D for the FDD serving cell. A bit HARQ process number may be transmitted.

Also, when the uplink reference UL / DL setting or RTT is set for the FDD serving cell, the UL index or DAI may be transmitted using the DCI format 0/4. That is, when the uplink reference UL / DL setting is set for the FDD serving cell, the base station apparatus 1 may transmit the UL index or DAI using the DCI format 0/4 to the terminal apparatus 2. .

When the base station apparatus 1 does not set the uplink reference UL / DL setting (virtual UL / DL setting) or RTT (virtual RTT) for the FDD serving cell, the base station apparatus 1 uses the DCI format 0/4 to set the UL index or DAI may not be transmitted. In that case, even if the terminal device 2 receives the DCI format 0/4, the terminal device 2 does not perform reception processing in consideration of the UL index or DAI.

In addition, when uplink reference UL / DL configuration or RTT is applied to the FDD serving cell, the UL index or DAI using the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D is May be sent. That is, when the base station apparatus 1 applies the uplink reference UL / DL setting or the RTT to the FDD serving cell for the terminal apparatus 2, the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C Send UL index or DAI using / 2D.

When the uplink reference UL / DL setting or RTT is not applied to the FDD serving cell, the base station apparatus 1 applies the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D to the terminal apparatus 2. It is not necessary to transmit the UL index or DAI. In this case, the terminal device 2 does not perform reception processing considering the UL index or DAI even if the DCI format 1 / 1A / 1B / 1D / 2 / 2A / 2B / 2C / 2D is received.

Also, when the uplink reference UL / DL setting or RTT is set for the FDD serving cell, the subframe i is the uplink reference UL / DL setting or RTT in the FDD serving cell in which the uplink reference UL / DL setting is set. In FIG. 5, if it is not an uplink subframe, the power control adjustment value f _c (i) in subframe i for the serving cell c is f _c (i−1). Also, the power control adjustment value f _c (i) of subframe i for the serving cell c when the PDCCH / EPDCCH with DCI format 0/4 is not decoded for the serving cell c is f _c (i−1). is there. The power control adjustment value f _c (i) for the serving cell c in subframe i in which DRX occurs is f _c (i−1). Also, the power control adjustment value f _c (i) for the serving cell c in subframe i that is not an uplink subframe in TDD is f _c (i−1). That is, when these conditions are satisfied, the power control adjustment value f _c (i) for the serving cell c in subframe i is the same as the power control adjustment value f _c (i−1) for the serving cell c in subframe i−1. is there.

Also, when the uplink reference UL / DL setting or RTT is set for the FDD serving cell, the SRS period (SRS periodicity) and SRS subframe offset (SRS subframe offset) setting (SRS period) for the FDD is set for the FDD serving cell And the SRS setting index for the SRS subframe offset) is set, the SRS transmission is performed using the SRS period (SRS periodicity) and SRS for the uplink subframe and FDD indicated in the uplink reference UL / DL setting. This is performed only in subframes where SRS subframes set based on the subframe offset (SRS （subframe offset) setting overlap. In other words, if the SRS subframe is not set in the uplink subframe indicated by the uplink reference UL / DL setting or the RTT, the terminal device 2 may not perform SRS transmission in the SRS subframe. . Moreover, the base station apparatus 1 does not transmit an SRS request such that an SRS is transmitted in such an SRS subframe. Moreover, the base station apparatus 1 does not transmit an SRS request at a timing at which the SRS is transmitted in such an SRS subframe. The terminal device 2 may transmit the P-SRS in such an SRS subframe. The terminal device 2 may not transmit the A-SRS in such an SRS subframe. When an SRS request for such an SRS subframe is transmitted by cross scheduling, the terminal apparatus 2 may not transmit an A-SRS in such an SRS subframe. That is, when an SRS request for such an SRS subframe is transmitted by self-scheduling, the terminal device 2 may transmit an A-SRS in such an SRS subframe.

When the uplink reference UL / DL setting is the same setting as the UL / DL setting 0 shown in FIG. 3, the UL index is included in the DCI format 0/4 for the FDD serving cell in which the uplink reference UL / DL setting is set. It is set. In the FDD serving cell, a subframe defined as a special subframe may be a downlink subframe.

• A predetermined value is set in RTT. The RTT may be configured using higher layer signaling. Also, the RTT may be set using L1 / L2 signaling. The RTT may be set using a system information block.

When the uplink reference UL / DL configuration is the same as the UL / DL configuration 1 to 6 shown in FIG. 3, the DDI format 0/4 for the FDD serving cell in which the uplink reference UL / DL configuration is set includes DAI Is set.

When the reference UL / DL configuration is applied to the FDD cell, the reference UL / DL configuration may be independently applied to the uplink component carrier and the downlink component carrier used for the FDD cell. That is, the uplink reference UL / DL configuration may be applied to the uplink component carrier used for the FDD cell, and the downlink reference UL / DL configuration may be applied to the downlink component carrier used for the FDD cell. .

FIG. 9 shows an example of an effective subframe when the reference UL / DL configuration is applied to each of the uplink / downlink of the FDD cell. Although FIG. 9 illustrates the case of uplink reference UL / DL setting 0 and downlink reference UL / DL setting 5, other settings may be used. The terminal device 2 does not expect to detect a plurality of DCI formats of the same type indicating different resource assignments and settings for one uplink subframe. That is, the base station apparatus 1 does not transmit a plurality of the same type of DCI formats indicating different settings in the same downlink subframe or the same downlink subframe for one uplink subframe. For example, DCI format 0 with different PUSCH resource allocation is not transmitted in uplink subframe # 2 in different downlink subframes (for example, downlink subframes # 7 and # 8). The same is true for CSI requests and SRS requests. For example, the terminal device 2 for which the trigger type 1 SRS transmission is configured may receive a type 1 SRS triggering event related to different values of parameters for the trigger type 1 SRS transmission configured by higher layer signaling for the same subframe of the same serving cell. Do not expect to receive. That is, the terminal device 2 does not expect that A-SRSs with different settings are requested in the same subframe of the same serving cell. The base station apparatus 1 does not request the terminal apparatus 2 for A-SRS with different settings in the same subframe of the same serving cell.

Serving cell frame structure when uplink reference UL / DL configuration and downlink reference UL / DL configuration (virtual UL / DL configuration) or reference RTT (virtual RTT) is applied in self-scheduling and / or cross-carrier scheduling Regardless of the type, the terminal apparatus 2 performs transmission / reception processing based on the uplink reference UL / DL setting and the downlink reference UL / DL setting or reference RTT (virtual RTT). When the uplink reference UL / DL configuration and the downlink reference UL / DL configuration (virtual UL / DL configuration) or reference RTT (virtual RTT) is not applied in self-scheduling and / or cross-carrier scheduling, the frame structure type of the serving cell Based on the above, the terminal device 2 performs transmission / reception processing.

In the base station apparatus 1 and the terminal apparatus 2 that perform communication using TDD-FDD carrier aggregation, the DCI format for the scheduled cell (Scheduling cell) is the schedule cell type. It may be configured based on the frame structure type. That is, the base station apparatus 1 transmits a DCI format based on the frame structure type of the scheduled cell to the terminal apparatus 2, and the terminal apparatus 2 performs reception processing based on the frame structure type of the scheduled cell. To do.

Also, the DCI format for the scheduled cell (Scheduled cell) transmitted from the scheduling cell (Scheduling cell) may be configured based on the frame structure type of the cell that performs scheduling. That is, the base station apparatus 1 transmits a DCI format corresponding to the frame structure type of the cell to be scheduled to the terminal apparatus 2, and the terminal apparatus 2 determines the DCI based on the frame structure type of the cell to be scheduled. A format reception process may be performed. Note that which cell the DCI format is to be transmitted to may be determined based on the function information of the terminal device 2. That is, it may be indicated whether or not the terminal device 2 has a function of supporting a DCI format reception process for the first frame structure type (duplex mode).

Further, it may be indicated whether or not the terminal device 2 has a function of supporting a DCI format reception process for the second frame structure type (duplex mode).

Further, it may be indicated whether or not the terminal device 2 has a function of supporting a DCI format reception process for the nth frame structure type (duplex mode). Similarly, it may be indicated whether or not the terminal device 2 has a function of supporting a DCI format transmission process for the nth frame structure type (duplex mode). That is, the base station apparatus 1 performs transmission / reception processing and scheduling processing according to the frame structure type supported by the terminal device 2.

Further, the terminal apparatus 2 performs transmission / reception processing based on function information indicating whether transmission / reception processing is performed according to the frame structure type of the cell to be scheduled or transmission / reception processing is performed according to the frame structure type of the scheduled cell. And a scheduling process may be performed.

Also, transmission / reception processing may be performed according to the frame structure type of the primary cell or a specific cell. In addition, when UL / DL setting or RTT is applied to the FDD cell, DCI format transmission / reception processing for TDD may be performed.

Further, when UL / DL setting or RTT is not applied to the FDD cell, DCI format transmission / reception processing for FDD may be performed.

When carrier aggregation of the same frame structure type (for example, TDD-TDD carrier aggregation or FDD-FDD carrier aggregation) to a different frame structure type of carrier aggregation (TDD-FDD carrier aggregation) is performed, the first frame structure type is changed to the second frame structure type. In the cell switched to the frame structure type, the terminal apparatus 2 may perform transmission / reception processing as a cell of the second frame structure type after a predetermined subframe after the switching is instructed. That is, as soon as switching is instructed, the indicated frame structure type may not be applied.

When a plurality of cells are aggregated, the terminal device 2 performs processing assuming that the guard periods of special subframes in different cells overlap at least by 1456 basic time units (basic time units). In addition, when a plurality of cells having different frame structure types are aggregated, the terminal device 2 performs processing assuming that the guard periods of the special subframes in the plurality of TDD cells overlap by at least 1456 basic time units. Do.

FIG. 1 is a schematic block diagram showing the configuration of the base station apparatus 1 of the present invention. As illustrated, the base station apparatus 1 includes an upper layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107, a channel measuring unit 109, and a transmission / reception antenna 111. The reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, and a wireless reception unit 1057. Further, the reception processing of the base station apparatus 1 is performed by the higher layer processing unit 101, the control unit 103, the receiving unit 105, and the transmission / reception antenna 111. The transmission unit 107 includes an encoding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and a downlink reference signal generation unit 1079. Further, the transmission processing of the base station apparatus 1 is performed by the higher layer processing unit 101, the control unit 103, the transmission unit 107, and the transmission / reception antenna 111.

The upper layer processing unit 101 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and a radio resource control (RRC). : (Radio Resource Control) layer processing.

The upper layer processing unit 101 generates information acquired in each downlink channel or acquires it from the upper node and outputs the information to the transmission unit 107. The upper layer processing unit 101 also arranges a radio resource (resource block) in which the terminal apparatus 2 arranges a physical uplink shared channel (PUSCH: Physical Uplink Shared Channel) that is uplink data information from among uplink radio resources. ). Further, the upper layer processing unit 101 determines a radio resource (resource block) in which a physical downlink shared channel (PDSCH: Physical Downlink Shared Channel) that is downlink data information is arranged from downlink radio resources. . Information for arranging radio resources may be referred to as resource block assignment (Resource ア block assignment) or resource allocation (Resource allocation).

The higher layer processing unit 101 generates downlink control information indicating the radio resource allocation, and transmits the downlink control information to the terminal device 2 via the transmission unit 107.

The upper layer processing unit 101 preferentially allocates radio resources with good channel quality based on the uplink channel measurement result input from the channel measurement unit 109 when allocating radio resources for arranging the PUSCH. That is, the upper layer processing section 101 generates information regarding various downlink signal settings and information regarding various uplink signal settings for a certain terminal device or certain cell.

Also, the upper layer processing unit 101 may generate information on various downlink signal settings and information on various uplink signal settings for each cell. Further, the upper layer processing unit 101 may generate information regarding various downlink signal settings and information regarding various uplink signal settings for each terminal apparatus 2.

Further, the upper layer processing unit 101 performs information on the first setting to information on the nth setting (n is a natural number) for a certain terminal device 2 or a certain cell, that is, specific to the terminal device and / or cell. May be generated and transmitted to the terminal device 2 via the transmission unit 107. For example, the information regarding the setting of the downlink signal and / or the uplink signal may include a parameter regarding resource allocation.

Also, the information related to downlink signal and / or uplink signal settings may include parameters used for sequence calculation. These radio resources are time frequency resources, subcarriers, resource elements (RE: REResource Element), resource element groups (REG: Resource Element Group), control channel elements (CCE: Control Channel Element), resource blocks (RB: (Resource Block), resource block group (RBG: Resource Block Group), etc.

These setting information and control information may be defined as information elements. Further, these setting information and control information may be defined as an RRC message. Moreover, you may transmit these setting information and control information to the terminal device 2 by system information. Moreover, you may transmit these setting information and control information to the terminal device 2 by exclusive signaling.

The upper layer processing unit 101 sets at least one TDD UL / DL setting (TDDTDUL / DL configuration (s), TDD config, tdd-Config, uplink-downlink configuration (s)) in the system information block type 1. To do. The TDD UL / DL setting may be defined as shown in FIG. The configuration of TDD may be indicated by setting an index. By notifying the terminal device 2 of the index, communication can be performed using the TDD subframe configuration (subframe pattern) corresponding to the index. As a downlink reference, a second TDD UL / DL setting may be set. Further, a plurality of types of system information blocks may be prepared. For example, the system information block type 1 includes information elements related to TDD UL / DL settings. It is a kind of system information block type 1. The TDD UL / DL setting may be transmitted in another system information block.

Also, the system information block type 2 includes information elements related to radio resource control. Note that a parameter related to an information element may be included as an information element in a certain information element. For example, what is called a parameter in the physical layer may be defined as an information element in the upper layer.

In the present invention, identity, identifier, and identification are referred to as ID (identifier, identification code, identification number). The ID (UEID) set uniquely for the terminal includes C-RNTI (Cell Radio Network Temporary Identifier), SPS C-RNTI (Semi-persistent Scheduling C-RNTI), Temporary C-RNTI, TPC-PUSCH RNTI, TPC- There is a random value for PUCCH RNTI, contention resolution. These IDs are used in cell units. These IDs are set by the upper layer processing unit 101.

Also, the upper layer processing unit 101 sets various identifiers for the terminal device 2 and notifies the terminal device 2 via the transmission unit 107. For example, RNTI is set and notified to the terminal device 2. Also, an ID corresponding to the physical layer cell ID, virtual cell ID, or virtual cell ID is set and notified. For example, as an ID corresponding to a virtual cell ID, there are IDs (PUSCH ID, PUCCH ID, scrambling initialization ID, reference signal ID (RSID), etc.) that can be set unique to the physical channel. The physical layer cell ID and the virtual cell ID may be used for generating a physical channel and physical signal series.

Also, the upper layer processing unit 101 generates DCI transmitted using PDCCH or EPDCCH, and transmits the DCI to the terminal device 2 via the transmission unit 107.

The upper layer processing unit 101 uses the uplink control information (UCI: Uplink Control Information) notified from the terminal device 2 through the physical uplink control channel (PUCCH: Physical Uplink Control Channel) and the buffer notified from the terminal device 2 Control information is generated to control the receiving unit 105 and the transmitting unit 107 based on the situation and various setting information (RRC message, system information, parameter, information element) of each terminal device 2 set by the upper layer processing unit 101 And output to the control unit 103. The UCI includes at least one of HARQ response information (HARQ-ACK, ACK / NACK / DTX), scheduling request (SR: Scheduling Request), and channel state information (CSI: Channel State Information). The CSI includes at least one of CQI, PMI, and RI.

The higher layer processing unit 101 sets parameters related to transmission power and transmission power of uplink signals (PRACH, PUCCH, PUSCH, UL DMRS, P-SRS, and A-SRS). Also, the higher layer processing section 101 sends parameters related to transmission power and transmission power of downlink signals (CRS, DL DMRS, CSI-RS, PDSCH, PDCCH / EPDCCH, etc.) to the terminal device 2 via the transmission section 107. Send. That is, the higher layer processing unit 101 transmits information on uplink and downlink power control to the terminal device 2 via the transmission unit 107. In other words, the upper layer processing unit 101 generates information related to transmission power control of the base station device 1 and the terminal device 2. For example, the upper layer processing unit 101 transmits a parameter related to the transmission power of the base station device 1 to the terminal device 2.

Further, the upper layer processing unit 101 transmits parameters used for setting the maximum transmission power P _{CMAX, c} and the total maximum output power P _CMAX of the terminal device 2 to the terminal device 2. Further, the upper layer processing unit 101 transmits information regarding transmission power control of various physical channels to the terminal device 2.

The upper layer processing unit 101 also includes information indicating the amount of interference from the adjacent base station device, information indicating the amount of interference given to the adjacent base station device 1 notified from the adjacent base station device, and channel measurement. Depending on the quality of the channel input from the unit 109, the transmission power of the terminal device 2 is set so that the PUSCH and the like satisfy a predetermined channel quality, considering interference with the adjacent base station device 1, Information indicating these settings is transmitted to the terminal device 2 via the transmission unit 107.

Specifically, the upper layer processing unit 101 is set as information shared between the terminal apparatuses 2 (information on shared parameters regarding uplink power control) or a parameter common between the terminal apparatuses 2 (sharable parameters). Information includes standard power ( _{PO_NOMINAL_PUSCH} , _{PO_NOMINAL_PUCCH} ), propagation loss compensation coefficient (attenuation coefficient) α, power offset for message 3, power offset specified for each PUCCH format, and the like as system information. Send. At this time, the power offset of PUCCH format 3 and the power offset of delta PUCCH format 1bCS may be added and notified. Further, information on these shared parameters may be notified by an RRC message.

In addition, the higher layer processing section 101, as information that can be set for each terminal device 2 (dedicated parameter information related to uplink power control), indicates whether the terminal device specific PUSCH power P _{0_UE_PUSCH} and delta MCS are valid. (DeltaMCS-Enabled), a parameter (accumulationEnabled) indicating whether or not accumulation is enabled, terminal device specific PUCCH power P _{0_UE_PUCCH} , P-SRS power offset P _{SRS_OFFSET} (0), and a filter coefficient are notified by an RRC message. At that time, the transmission diversity power offset in each PUCCH format, A-SRS power offset P _{SRS_OFFSET} (1) may be notified. Α described here is used to set the transmission power together with the path loss value, and is a coefficient representing the degree of compensation for the path loss, in other words, how much the transmission power is increased or decreased according to the path loss (that is, how much transmission power is transmitted). This is a coefficient (attenuation coefficient, transmission line loss compensation coefficient) that determines whether power is compensated. α usually takes a value from 0 to 1, if 0, power compensation according to the path loss is not performed, and if 1, the transmission power of the terminal device 2 is compensated so that the influence of the path loss does not occur in the base station device 1. To do. These pieces of information may be transmitted to the terminal device 2 as reset information. Note that these shared parameters and dedicated parameters may be set independently in the primary cell and the secondary cell or in a plurality of serving cells.

Further, when the reception unit 105 receives the function information of the terminal device 2 from the terminal device 2, the upper layer processing unit 101 performs various settings based on the function information of the terminal device 2. For example, the uplink carrier frequency and the downlink carrier frequency are determined from the band (EUTRA Operating Band) supported by the terminal device 2 based on the function information of the terminal device 2. Further, based on the function information of the terminal device 2, it is determined whether or not to perform MIMO communication with the terminal device 2. Further, based on the function information of the terminal device 2, it is determined whether or not to perform carrier aggregation. Further, based on the function information of the terminal device 2, it is determined whether or not to perform carrier aggregation using component carriers of different frame structure types. That is, whether or not to set a secondary cell and various parameters used for the secondary cell are determined. The terminal device 2 is notified of the determined information. Information on the carrier frequency may be notified by an RRC message. That is, information on the carrier frequency may be notified by system information. Further, information regarding the carrier frequency may be notified by being included in the mobility control information. Moreover, the information regarding a carrier frequency may be notified from a higher layer as RRC information.

If the upper layer processing unit 101 indicates that the function information transmitted from the terminal apparatus 2 supports a function for performing cross-carrier scheduling for the uplink, the setting related to cross-carrier scheduling for the uplink (CrossCarrierSchedulingConfig -UL) is set, and the setting information is transmitted to the terminal device 2 via the transmission unit 107 using higher layer signaling. Also, the information (schedulingCellId-UL) indicating the cell that signals the uplink grant (which cell signals the uplink grant) may be included in the setting related to cross carrier scheduling for the uplink. In addition, information (cif-Presence-UL) indicating whether or not there is CIF in the PDCCH / EPDCCH DCI format (DCI format for uplink) may be included in the setting related to cross carrier scheduling for uplink.

If the upper layer processing unit 101 indicates that the function information transmitted from the terminal apparatus 2 supports a function for performing cross carrier scheduling for the downlink, the setting related to cross carrier scheduling for the downlink (CrossCarrierSchedulingConfig -DL) is set, and the setting information is transmitted to the terminal device 2 via the transmission unit 107 using higher layer signaling. In addition, the configuration related to downlink cross-carrier scheduling may include information (schedulingCellId-DL) indicating a cell that signals downlink allocation (downlink grant) (which cell signals downlink allocation). . In addition, the setting related to downlink cross carrier scheduling may include information (pdsch-Start) indicating a start OFDM symbol corresponding to information indicating a cell. In addition, information (cif-Presence-DL) indicating whether or not CIF is included in the PDCCH / EPDCCH DCI format (DCI format for downlink) may be included in the setting related to cross carrier scheduling for the downlink.

Further, when setting a secondary cell for the terminal device 2, the upper layer processing unit 101 assigns a cell index other than a specific value (for example, an information bit corresponding to “0” or “0”) to the secondary cell. And the setting information is transmitted to the terminal device 2. When the secondary cell is set, the terminal device 2 regards the cell index of the primary cell as a specific value.

Further, the higher layer processing unit 101 may set a downlink signal / uplink signal transmission power or a parameter related to transmission power for each terminal device 2. Further, the higher layer processing section 101 may set parameters related to transmission power or transmission power of downlink / uplink signals that are common between the terminal devices 2. The upper layer processing section 101 uses the information regarding these parameters as information regarding uplink power control (parameter information regarding uplink power control) and / or information regarding downlink power control (parameter information regarding downlink power control). You may transmit to the apparatus 2. The parameter information related to uplink power control and the parameter information related to downlink power control include at least one parameter and are transmitted to the terminal device 2.

The upper layer processing unit 101 sets various IDs related to various physical channels / physical signals, and outputs information related to ID setting to the receiving unit 105 and the transmitting unit 107 via the control unit 103. For example, the higher layer processing unit 101 sets a value of RNTI (UEID) for scrambling the CRC included in the downlink control information format.

The upper layer processing unit 101 includes C-RNTI (Cell Radio Network Temporary Identifier), Temporary C-RNTI, P-RNTI (Paging-RNTI), RA-RNTI (Random Access RNTI), SPS C-RNTI (Semi- Various identifier values such as Persistent Scheduling C-RNTI and SI-RNTI (System Information RNTI) may be set.

Further, the upper layer processing unit 101 sets ID values such as a physical layer cell ID, a virtual cell ID, and a scramble initialization ID. Such setting information is output to each processing unit via the control unit 103. Moreover, these setting information may be transmitted to the terminal device 2 as an RRC message, system information, dedicated information unique to the terminal device, and information elements. Also, some RNTIs may be transmitted using MAC CE (Control Element).

The control unit 103 generates a control signal for controlling the receiving unit 105 and the transmitting unit 107 based on the control information from the higher layer processing unit 101. Control unit 103 outputs the generated control signal to receiving unit 105 and transmitting unit 107 to control receiving unit 105 and transmitting unit 107.

The upper layer processing unit 101 may apply the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) to the FDD cell. Uplink and downlink scheduling may be performed on the FDD cell to which the uplink reference UL / DL configuration is applied using the DCI format for TDD. The upper layer processing unit 101 performs uplink and downlink scheduling for the FDD cell to which the uplink reference UL / DL setting is not applied, using the DCI format for FDD.

The upper layer processing unit 101 schedules PUSCH transmission using the PDCCH / EPDCCH with DCI format 0/4 in which the UL index is set for the FDD cell to which the uplink reference UL / DL configuration is applied. Also good. Upper layer processing section 101 may schedule PUSCH transmission using PDCCH / EPDCCH with DCI format 0/4 that does not set the UL index for FDD cells to which uplink reference UL / DL configuration is not applied. .

The upper layer processing unit 101 may determine whether or not to set the UL / DL setting for the FDD cell based on the function information transmitted from the terminal device 2.

Whether the upper layer processing unit 101 applies the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) to the FDD secondary cell depends on the frame of the primary cell. It may be determined according to the structure type. When the frame structure type of the primary cell is TDD, the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) may be applied to the FDD secondary cell. When the frame structure type of the primary cell is FDD, the uplink reference UL / DL setting and / or the downlink reference UL / DL setting (virtual UL / DL setting) may not be applied.

The receiving unit 105 separates, demodulates and decodes the received signal received from the terminal device 2 via the transmission / reception antenna 111 according to the control signal input from the control unit 103, and outputs the decoded information to the upper layer processing unit 101. . The radio reception unit 1057 converts an uplink signal received via the transmission / reception antenna 111 into an intermediate frequency (IF: Intermediate Frequency) (down-conversion), removes unnecessary frequency components, and appropriately maintains the signal level. As described above, the amplification level is controlled, and based on the in-phase and quadrature components of the received signal, quadrature demodulation is performed, and the quadrature demodulated analog signal is converted into a digital signal. Radio receiving section 1057 removes a portion corresponding to a guard interval (GI: Guard Interval) from the converted digital signal. Radio receiving section 1057 performs fast Fourier transform (FFT: Fast Fourier Transform) on the signal from which the guard interval has been removed, extracts a frequency domain signal, and outputs the signal to demultiplexing section 1055.

In addition, when the receiving unit 105 sets the setting information and / or parameters related to any of the first method to the fourth method and transmits the setting information to the terminal device 2, the physical resource for the PUCCH is determined from the first method. Receive based on any of the fourth methods.

The demultiplexing unit 1055 separates the signal input from the wireless receiving unit 1057 into signals such as PUCCH, PUSCH, UL DMRS, SRS, and the like. This separation is performed based on radio resource allocation information that is determined in advance by the base station device 1 and notified to each terminal device 2. Further, demultiplexing section 1055 compensates for the transmission paths of PUCCH and PUSCH from the estimated values of the transmission paths input from channel measurement section 109. Further, the demultiplexing unit 1055 outputs the separated UL DMRS and SRS to the channel measurement unit 109.

The demodulating unit 1053 performs inverse discrete Fourier transform (IDFT: Inverse Discrete Fourier Transform) on the PUSCH, obtains modulation symbols, and performs two-phase shift keying (BPSK: Binary Phase Shift Keying) on each of the PUCCH and PUSCH modulation symbols. ) Four-phase phase shift keying (QPSK: Quadrature Phase Shift Keying), 16-value quadrature amplitude modulation (16QAM: 16 Quadrature Amplitude Modulation), 64-value quadrature amplitude modulation (64QAM: 64 Quadrature Amplitude Modulation), etc. Alternatively, the base station apparatus 1 demodulates the received signal using a modulation scheme notified in advance by the downlink control information to each terminal apparatus 2.

The decoding unit 1051 outputs the demodulated encoded bits of the PUCCH and PUSCH in a predetermined encoding method in advance, or the base station device 1 sends the terminal device 2 in advance with an uplink grant (UL grant). Decoding is performed at the notified coding rate, and the decoded data information and uplink control information are output to the upper layer processing section 101.

Channel measurement section 109 measures an estimated value of the transmission path, channel quality, and the like from uplink demodulation reference signals UL DMRS and SRS input from demultiplexing section 1055, and outputs them to demultiplexing section 1055 and higher layer processing section 101 To do. Further, channel measuring section 109 measures the received power and / or received quality of the first signal to the nth signal, and outputs them to demultiplexing section 1055 and higher layer processing section 101.

The transmission unit 107 generates a downlink reference signal (downlink reference signal) based on the control signal input from the control unit 103, and receives the data information and downlink control information input from the higher layer processing unit 101. It encodes and modulates, multiplexes PDCCH (EPDCCH), PDSCH, and a downlink reference signal, and transmits a downlink signal to the terminal device 2 via the transmission / reception antenna 111.

When the uplink reference UL / DL setting (or virtual UL / DL setting) or RTT (virtual RTT) is set for the FDD cell, the transmitter 107 performs FDD based on the uplink reference UL / DL setting. The UL index or DAI may be set in the DCI format associated with the uplink for the cell and transmitted.

When the uplink reference UL / DL setting or RTT (virtual RTT) is not set for the FDD cell, the transmission unit 107 may not set the UL index or DAI in the DCI format related to the uplink. .

When the downlink reference UL / DL setting (or virtual UL / DL setting) or RTT (virtual RTT) is set for the FDD cell, the transmission unit 107 sets the downlink reference UL / DL setting or RTT (virtual RTT). ), A DAI and / or SRS request may be set and transmitted in the DCI format associated with the uplink for the FDD cell.

When the downlink reference UL / DL setting or RTT (virtual RTT) is not set for the FDD cell, the transmission unit 107 may not set the DAI and SRS requests in the DCI format related to the downlink. .

The transmitting unit 107 may set two RTTs (Round Trip Timer) for the FDD cell when performing carrier aggregation using cells (component carriers) of different frame structure types.

The transmission unit 107 may schedule one or more uplink subframes for the terminal device 2 by transmitting the UL index using one DCI format. For example, when the UL index is composed of 2 bits, two uplink subframes are set by setting the most significant bit (MSB: Most Significant Bit) and the least significant bit (LSB: Least Significant Bit) to “1”. Can be scheduled. For example, when transmitting section 107 transmits a UL index in which both MSB and LSB are set to “1” in subframe n using DCI format 0/4, terminal apparatus 2 uses n + k and n + j (k ≠ j), PUSCH transmission can be performed. When transmitting section 107 transmits a UL index in which only the MSB is set to “1” in subframe n using DCI format 0/4, terminal apparatus 2 performs PUSCH transmission in n + k. In addition, when transmitting section 107 transmits a UL index in which only LSB is set to “1” in subframe n using DCI format 0/4, terminal apparatus 2 performs PUSCH transmission in n + j.

When the TDD-FDD carrier aggregation is performed, the transmission unit 107 may perform transmission processing of a DCI format to be transmitted based on the frame structure type of a cell to be scheduled. Further, when performing TDD-FDD carrier aggregation, transmission section 107 may perform transmission processing of a DCI format to be transmitted based on the frame structure type of the cell to be scheduled.

When the DCI format with the CRC scrambled using a specific RNTI can be transmitted to the terminal device 2, the transmitting unit 107 may transmit the DCI format with a virtual UL / DL setting.

The encoding unit 1071 performs encoding such as turbo encoding, convolutional encoding, and block encoding on the downlink control information and data information input from the higher layer processing unit 101. Modulation section 1073 modulates the encoded bits with a modulation scheme such as QPSK, 16QAM, or 64QAM. The downlink reference signal generation unit 1079 is obtained by a predetermined rule based on a cell identifier (Cell ID, Cell Identity, Cell Identifier, Cell Identification) or the like for identifying the base station device 1, and the terminal device 2 is known As a downlink reference signal. The multiplexing unit 1075 multiplexes each modulated channel and the generated downlink reference signal.

The wireless transmission unit 1077 performs inverse fast Fourier transform (IFFT: Inverse Fast Fourier Transform) on the multiplexed modulation symbols, modulates the OFDM scheme, adds a guard interval to the OFDM symbol that has been OFDM-modulated, and performs baseband digital Generate a signal, convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, and increase the signal of the intermediate frequency The signal is converted (up-converted) into a frequency signal, an extra frequency component is removed, the power is amplified, and output to the transmission / reception antenna 111 for transmission.

FIG. 2 is a schematic block diagram showing the configuration of the terminal device 2 according to the present embodiment. As illustrated, the terminal device 2 includes an upper layer processing unit 201, a control unit 203, a reception unit 205, a transmission unit 207, a channel measurement unit 209, and a transmission / reception antenna 211. The reception unit 205 includes a decoding unit 2051, a demodulation unit 2053, a demultiplexing unit 2055, and a wireless reception unit 2057. The reception processing of the terminal station apparatus 2 is performed by the upper layer processing unit 201, the control unit 203, the receiving unit 205, and the transmission / reception antenna 211. The transmission unit 207 includes an encoding unit 2071, a modulation unit 2073, a multiplexing unit 2075, and a wireless transmission unit 2077. The transmission processing of the terminal device 2 is performed by the higher layer processing unit 201, the control unit 203, the transmission unit 207, and the transmission / reception antenna 211.

The upper layer processing unit 201 outputs uplink data information generated by a user operation or the like to the transmission unit. The upper layer processing unit 201 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and radio resource control. Process the (RRC: Radio Resource Control) layer.

The upper layer processing unit 201 manages various setting information of the own station. Further, the upper layer processing unit 201 generates information to be arranged in each uplink channel and outputs the information to the transmission unit 207. The higher layer processing unit 201 has various control information of its own station managed by the higher layer processing unit 201 in which the downlink control information notified from the base station apparatus 1 by PDCCH and the radio resource control information notified by PDSCH are set. Based on the control information, control information is generated to control the reception unit 205 and the transmission unit 207, and is output to the control unit 203. Further, the upper layer processing unit 201 sets various parameters (information element, RRC message) of each signal based on information on the n-th setting from information on the first setting notified from the base station apparatus 1. . In addition, the set information is generated and output to the transmission unit 207 via the control unit 203. Further, when establishing a connection with the base station apparatus 1, the upper layer processing unit 201 generates function information of the terminal apparatus 2 and outputs the function information to the transmission unit 207 via the control unit 203. To notify. The higher layer processing unit 201 may notify the base station apparatus 1 of the function information after the connection with the base station apparatus 1 is established.

The function information may include information on RF parameters (RF-Parameters). The information related to the RF parameter may include information indicating a band supported by the terminal device 2 (1st 示す SupportedBandCombination). The information related to the RF parameter may include information (SupportedBandCombinationExt) indicating a band that supports carrier aggregation and / or MIMO. The information regarding the RF parameters may include information indicating a band that supports a plurality of timing advance between bands that are simultaneously aggregated in the terminal device 2 and a function that transmits and receives simultaneously between bands (2nd2SupportedBandCombination). Good. Each of these bands may be listed. Values (entries) indicated by a plurality of listed information may be common (may indicate the same).

It may be indicated whether half-duplex is supported for each band (bandE-UTRA, “FreqBandIndicator”, “E-UTRA” Operating ”Band) supported by the terminal device 2. Full duplex is supported in bands where half duplex is not supported.

It may be indicated whether the carrier supported by the terminal device 2 supports carrier aggregation and / or MIMO in the uplink.

Whether the carrier supported by the terminal device 2 supports carrier aggregation and / or MIMO in the downlink may be indicated.

The information on the RF parameter may include information indicating a band that supports TDD-FDD carrier aggregation. These bands may be listed.

The information related to the RF parameter may include information indicating whether a function of simultaneously transmitting / receiving between bands that support TDD-FDD carrier aggregation is supported.

Also, the information regarding the RF parameters may include information indicating whether transmission / reception can be performed simultaneously between bands of different duplex modes.

The function information may include information on physical layer parameters (PhyLayerParameters). The information regarding the physical layer parameters may include information indicating whether or not a function of performing cross carrier scheduling is supported. Further, the information regarding the physical layer parameters may include information indicating whether or not a function of performing cross-carrier scheduling for the uplink (CrossCarrierScheduling-UL) is supported. Also, the information regarding the physical layer parameters may include information indicating whether or not a function of performing cross-carrier scheduling for the downlink (CrossCarrierScheduling-DL) is supported.

For the terminal device 2 having a function of performing cross carrier scheduling for the uplink, the base station device 1 performs the setting related to the cross carrier scheduling for the uplink to the terminal device 2, thereby changing the uplink grant to the cross carrier. You may notify by scheduling. That is, the base station apparatus 1 may transmit the DCI format (uplink grant) regarding PUSCH scheduling for the second cell to the terminal apparatus 2 using the PDCCH of the first cell. The terminal device 2 can identify which cell is the DCI format by reading the CIF included in the DCI format accompanying the PDCCH transmitted by the PDCCH of the first cell.

For the terminal device 2 having the function of performing the cross carrier scheduling for the downlink, the base station device 1 performs the setting related to the cross carrier scheduling for the downlink with respect to the terminal device 2 to thereby convert the downlink grant to the cross carrier. You may notify by scheduling. That is, the base station apparatus 1 may transmit the DCI format (downlink grant) related to PDSCH scheduling for the second cell to the terminal apparatus 2 using the PDCCH of the first cell. The terminal device 2 can identify which cell is the DCI format by reading the CIF included in the DCI format accompanying the PDCCH transmitted by the PDCCH of the first cell.

Here, as a part of the capability (function, performance) of the terminal device 2 notified from the terminal device 2 to the base station device 1, the cross-carrier scheduling capability related to the downlink and the cross-carrier scheduling capability related to the uplink are respectively set. (Independently and individually). As an example, the parameter group of the physical layer of the information element (for example, UE-EUTRA-Capability) of the RRC message used when the terminal device 2 notifies the base station device 1 of the capability of the terminal device 2, A field (first field) indicating whether to support downlink cross-carrier scheduling and a field (second field) indicating whether to support uplink cross-carrier scheduling may be included. The terminal device 2 that supports cross-carrier scheduling related to the downlink notifies the base station device 1 of the physical layer parameter group including the first field. The base station apparatus 1 that has received the notification can recognize that the terminal apparatus 2 is a terminal apparatus that supports cross-carrier scheduling related to the downlink. The terminal apparatus 2 that does not support downlink cross-carrier scheduling notifies the base station apparatus 1 without including the first field in the physical layer parameter group (omitting the value set in the first field). May be. The base station device 1 that has received the notification can recognize that the terminal device 2 is a terminal device that does not support cross-carrier scheduling related to the downlink. The terminal apparatus 2 that supports cross-carrier scheduling related to the uplink notifies the base station apparatus 1 of the physical layer parameter group including the second field. The base station device 1 that has received the notification can recognize that the terminal device 2 is a terminal device that supports cross-carrier scheduling related to uplink. The terminal apparatus 2 that does not support cross-carrier scheduling related to the uplink notifies the base station apparatus 1 without including the second field in the physical layer parameter group. The base station device 1 that has received the notification can recognize that the terminal device 2 is a terminal device that does not support cross-carrier scheduling related to the uplink. Thus, when a value set in a field is omitted, it is different from any value set in the field (for example, “1” indicating that the corresponding function is supported) (for example, corresponding) Does not support the function).

Note that these functions may be supported only by a terminal device that supports cross-carrier scheduling in conventional carrier aggregation (FDD and FDD carrier aggregation and TDD and TDD carrier aggregation). That is, in order to set a value (for example, “1” indicating support) in the first field and / or the second field, a value (in the field indicating whether to support cross carrier scheduling in the conventional carrier aggregation ( For example, it may be necessary that “1” indicating support is set.

As another example, the parameter group of the function group information (FGI: Feature Group Information) in the information element of the RRC message used when the terminal device 2 notifies the base station device 1 of the capability of the terminal device 2 A field indicating whether to support cross-carrier scheduling for the link (first field) and a field indicating whether to support cross-carrier scheduling for the uplink (second field) are always included, The values set in these fields may indicate whether these functions are supported. For example, “1” may be set when these functions are supported, and “0” may be set when these functions are not supported. Alternatively, “0” may be set when these functions are supported, and “1” may be set when these functions are not supported.

The base station apparatus 1 may notify the downlink grant by cross carrier scheduling to the terminal apparatus 2 that has the function of performing cross carrier scheduling for the downlink and does not have the function of performing cross carrier scheduling for the uplink. However, the terminal device 2 may ignore the uplink grant even if the uplink grant is notified by cross carrier scheduling.

The base station apparatus 1 may notify the uplink grant by the cross carrier scheduling to the terminal apparatus 2 that has the function of performing the cross carrier scheduling for the uplink and does not have the function of performing the cross carrier scheduling for the downlink. However, the terminal device 2 may ignore the downlink grant even if the downlink grant is notified by cross carrier scheduling.

If there is an unsupported function among these functions included in the function information, the upper layer processing unit 201 does not set information indicating whether the function is supported in the function information. May be. The base station apparatus 1 considers that the terminal apparatus 2 does not support functions not set in the function information, and performs various settings. Note that the information indicating whether the function is supported may be information indicating that the function is supported.

If there is an unsupported function among these function information, the upper layer processing unit 201 has a specific value (for example, “0”) or information (for example, “0”) indicating that the function is not supported. not supported ”,“ disable ”,“ FALSE ”, etc.) may be set and the base station apparatus 1 may be notified of function information including the information.

If there is a supported function among these function information, the upper layer processing unit 201 has a specific value (for example, “1”) or information (for example, “1”) indicating that the function is supported. supported "," enable "," TRUE ", etc.) may be set, and the function information including the information may be notified to the base station apparatus 1.

The upper layer processing unit 201 supports information (simultaneousRx-Tx) indicating whether or not a function of simultaneously transmitting / receiving between simultaneously aggregateable bands is supported when there is no function of simultaneously transmitting / receiving between simultaneously aggregateable bands. Set a specific value or information that indicates not. Alternatively, information itself indicating whether or not a function for simultaneously transmitting and receiving between bands that can be aggregated is supported is not set in the function information.

The upper layer processing unit 201 includes a sounding subframe (SRS subframe, SRS transmission subframe) that is a subframe for reserving a radio resource for transmitting the SRS broadcasted by the base station apparatus 1, and a sounding subframe. Information indicating the bandwidth of the radio resource reserved for transmitting the SRS, the subframe for transmitting the periodic SRS notified from the base station apparatus 1 to the terminal apparatus 2, the frequency band, and the CAZAC of the periodic SRS Information indicating the amount of cyclic shift used for the sequence, the frequency band for transmitting the aperiodic SRS notified to the terminal device 2 by the base station device 1, and the cyclic shift used for the CAZAC sequence of the aperiodic SRS And the information indicating the amount of data are acquired from the receiving unit 205.

The upper layer processing unit 201 controls SRS transmission according to the information. Specifically, the upper layer processing unit 201 controls the transmission unit 207 to transmit the periodic SRS once or periodically according to the information related to the periodic SRS. When the upper layer processing unit 201 is requested to transmit an aperiodic SRS in the SRS request (SRS indicator) input from the receiving unit 205, the upper layer processing unit 201 determines the aperiodic SRS in advance according to information about the aperiodic SRS. Is transmitted only once (for example, once).

Upper layer processing section 201 controls transmission power of PRACH, PUCCH, PUSCH, periodic SRS, and aperiodic SRS based on information related to transmission power control of various uplink signals transmitted from base station apparatus 1. To do. Specifically, the upper layer processing unit 201 sets various uplink signal transmission powers based on various uplink power control information acquired from the reception unit 205. For example, the transmission power of SRS is P _{0_PUSCH} , α, power offset P _{SRS_OFFSET} (0) for periodic SRS (first power offset (pSRS-Offset)), power offset P _{SRS_OFFSET} (1 ) (Second power offset (pSRS-OffsetAp)) and the TPC command. Note that the upper layer processing unit 201 switches between the first power offset and the second power offset in accordance with P _{SRS_OFFSET} depending on whether it is a periodic SRS or an _aperiodic SRS.

Further, when the third power offset is set for the periodic SRS and / or the aperiodic SRS, the upper layer processing unit 201 sets the transmission power based on the third power offset. Note that the value of the third power offset may be set in a wider range than the first power offset and the second power offset. The third power offset may be set for each of the periodic SRS and the aperiodic SRS. That is, the parameter information related to uplink power control is information elements and RRC messages including parameters related to control of transmission power of various uplink physical channels.

Further, the upper layer processing section 201 uses the maximum transmission power (the total transmission power of the first uplink reference signal and the transmission power of the physical uplink shared channel) set in the terminal device 2 in a certain serving cell and a certain subframe ( For example, if P _CMAX or P _{CMAX, c} ) is exceeded, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink shared channel.

Further, the upper layer processing section 201 has a maximum transmission power (total transmission power (total transmission power of the first uplink reference signal and physical uplink control channel) set in the terminal device 2 in a certain serving cell and a certain subframe ( For example, if P _CMAX or P _{CMAX, c} ) is exceeded, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink control channel.

Further, the upper layer processing section 201 determines the maximum transmission power at which the sum of the transmission power of the second uplink reference signal and the transmission power of the physical uplink shared channel is set in the terminal device 2 in a certain serving cell and a certain subframe. When exceeding, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink shared channel.

Further, the upper layer processing section 201 determines the transmission power of the second uplink reference signal and the transmission power of the physical uplink control channel in a certain serving cell (for example, serving cell c) and a certain subframe (for example, subframe i). When the total exceeds the maximum transmission power set in the terminal apparatus 2, the instruction information is output to the transmission unit 207 via the control unit 203 so as to transmit the physical uplink control channel.

Further, when transmission of a plurality of physical channels occurs at the same timing (for example, subframe), the upper layer processing unit 201 controls transmission power of various physical channels according to the priority of the various physical channels. It is also possible to control the transmission of various physical channels. Upper layer processing section 201 outputs the control information to transmission section 207 via control section 203.

Further, when performing carrier aggregation using a plurality of serving cells or a plurality of component carriers corresponding to a plurality of serving cells, the upper layer processing unit 201 controls transmission power of various physical channels according to the priority of the physical channels. It is also possible to control transmission of various physical channels.

Further, the higher layer processing unit 201 may perform transmission control of various physical channels transmitted from the cell according to the priority of the cell. Upper layer processing section 201 outputs the control information to transmission section 207 via control section 203.

Upper layer processing section 201 sends instruction information to transmitting section 207 via control section 203 so as to generate an uplink reference signal based on information related to the setting of the uplink reference signal notified from base station apparatus 1. Output. That is, the reference signal control unit 2013 outputs information related to the setting of the uplink reference signal to the uplink reference signal generation unit 2079 via the control unit 203.

The control unit 203 generates a control signal for controlling the reception unit 205 and the transmission unit 207 based on the control information from the higher layer processing unit 201. Control unit 203 outputs the generated control signal to reception unit 205 and transmission unit 207 to control reception unit 205 and transmission unit 207.

The receiving unit 205 separates, demodulates, and decodes the received signal received from the base station apparatus 1 via the transmission / reception antenna 211 according to the control signal input from the control unit 203, and sends the decoded information to the upper layer processing unit 201. Output.

The receiving unit 205 performs an appropriate reception process depending on whether or not information related to the first setting and / or information related to the second setting is received. For example, when either one of the information on the first setting or the information on the second setting is received, the first control information field is detected from the received downlink control information format, and the first When the information related to the setting and the information related to the second setting are received, the second control information field is detected from the received downlink control information format.

When the TDD-FDD carrier aggregation is performed, the reception unit 205 may perform reception processing of the received DCI format based on the frame structure type of the cell to be scheduled. In addition, when TDD-FDD carrier aggregation is performed, the reception unit 205 may perform reception processing of the received DCI format based on the frame structure type of the scheduled cell. For example, if the frame structure type is FDD, the receiving unit 205 performs reception processing in the DCI format for FDD, and performs reception processing in the DCI format for TDD if the frame structure type is TDD.

When the TDD-FDD carrier aggregation is performed, the receiving unit 205 may perform PUSCH transmission and PHICH / uplink grant reception based on two RTTs.

The radio reception unit 2057 converts a downlink signal received via each reception antenna into an intermediate frequency (down-conversion), removes unnecessary frequency components, and an amplification level so that the signal level is appropriately maintained. , And quadrature demodulation based on the in-phase and quadrature components of the received signal, and converting the quadrature demodulated analog signal into a digital signal. The wireless reception unit 2057 removes a portion corresponding to the guard interval from the converted digital signal, performs fast Fourier transform on the signal from which the guard interval is removed, and extracts a frequency domain signal.

The demultiplexing unit 2055 separates the extracted signal into a PDCCH, a PDSCH, and a downlink reference signal (DL-RS: Downlink Reference Signal). This separation is performed based on radio resource allocation information notified by the downlink control information. Further, demultiplexing section 2055 compensates for the transmission paths of PDCCH and PDSCH from the estimated value of the transmission path input from channel measurement section 209. Also, the demultiplexing unit 2055 outputs the separated downlink reference signal to the channel measurement unit 209.

The demodulation unit 2053 demodulates the PDCCH using the QPSK modulation method and outputs the result to the decoding unit 2051. Also, the demodulation unit 2053 demodulates the modulation scheme notified by the downlink control information such as QPSK, 16QAM, and 64QAM with respect to the PDSCH, and outputs it to the decoding unit 2051.

The decoding unit 2051 tries to decode the PDCCH, and outputs the decoded downlink control information to the higher layer processing unit 201 when the decoding is successful. Also, the decoding unit 2051 performs decoding on the coding rate notified by the downlink control information, and outputs the decoded data information to the upper layer processing unit 201.

When there is no function to perform cross-carrier scheduling independently for uplink and downlink, decoding section 2051 performs decoding processing (blind decoding) with DCI format 0 and DCI format 1A as one DCI format. Do.

When the decoding unit 2051 has a function of performing cross-carrier scheduling independently for the uplink and the downlink, the decoding unit 2051 performs a decoding process using the DCI format 0 and the DCI format 1A as independent DCI formats.

The decoding unit 2051 does not expect that uplink carrier cross carrier scheduling such as DCI format 0 or DCI format 4 is performed when there is no function of performing cross carrier scheduling for the uplink.

The decoding unit 2051 does not expect to perform downlink carrier cross carrier scheduling such as DCI format 1 or DCI format 1A when there is no function to perform downlink cross carrier scheduling.

The decoding unit 2051 may increase the total number of blind decoding when the setting related to any one of the cross carrier scheduling is performed for the uplink and the downlink.

The decoding unit 2051 performs a decoding process so as not to exceed the total number of blind decoding when only one of the settings regarding the cross carrier scheduling for the uplink or the downlink is set. For example, in USS, the number of PDCCH candidates is limited. In USS, the aggregation level for decoding is limited. Moreover, the cell (component carrier) which performs a decoding process is restrict | limited. For example, the decoding process is performed only on the primary cell. The base station apparatus 1 transmits the PDCCH using the limited number of PDCCH candidates, the aggregation level, and the cells so that blind decoding does not increase.

The channel measurement unit 209 measures the downlink path loss from the downlink reference signal input from the demultiplexing unit 2055, and outputs the measured path loss to the higher layer processing unit 201. Further, channel measurement section 209 calculates an estimated value of the downlink transmission path from the downlink reference signal, and outputs it to demultiplexing section 2055. In addition, the channel measurement unit 209 receives the first signal and / or the second signal according to various information related to the measurement notified from the reference signal control unit 2013 via the control unit 203 and various information related to the measurement report. Measure power and receive quality. The result is output to the upper layer processing unit 201. When channel measurement unit 209 is instructed to perform channel evaluation of the first signal and / or second signal, channel measurement unit 209 may output the result of channel evaluation of each signal to higher layer processing unit 201. Good. Here, the first signal and the second signal are reference signals (pilot signal, pilot channel, reference signal), and the third signal and the fourth signal in addition to the first signal and the second signal. There may be. That is, the channel measurement unit 209 measures one or more signal channels. Further, the channel measurement unit 209 sets a signal for channel measurement according to the notified control information from the higher layer processing unit 201 via the control unit 203.

Further, the channel measurement unit 209 causes the same sub of a cell (second cell) different from a certain cell due to the occurrence of an uplink subframe in which uplink transmission is requested in a certain cell (first cell). When CRS or CSI-RS cannot be measured in a frame, it may be performed excluding subframes in which the average of measurement results (received power, received quality, channel quality, etc.) in the second cell could not be measured. In other words, the channel measurement unit 209 may calculate an average value of measurement results (reception power, reception quality, channel quality, etc.) using only the received CRS and CSI-RS. The calculation result (indicator or information corresponding to the calculation result) may be transmitted to the base station apparatus 1 via the transmission unit 207.

The transmission unit 207 generates an uplink demodulation reference signal (UL DMRS) and / or a sounding reference signal (SRS) based on the control signal (control information) input from the control unit 203, and the higher layer processing unit 201 Encodes and modulates input data information, multiplexes PUCCH, PUSCH, and generated UL DMRS and / or SRS, adjusts transmission power of PUCCH, PUSCH, UL DMRS, and SRS, and transmits / receives via transmission / reception antenna 211 To the base station apparatus 1.

In addition, when the information related to the measurement result is output from the upper layer processing unit 201, the transmission unit 207 transmits the information to the base station apparatus 1 via the transmission / reception antenna 211.

Further, when the channel state information that is the result regarding the channel evaluation is output from the higher layer processing unit 201, the transmission unit 207 feeds back the channel state information to the base station apparatus 1. That is, the higher layer processing unit 201 generates channel state information (CSI, CQI, PMI, RI) based on the measurement result notified from the channel measurement unit 209, and feeds back to the base station apparatus 1 via the control unit 203. To do.

When the receiving unit 205 detects a predetermined grant (or a predetermined downlink control information format), the transmitting unit 207 transmits an uplink signal corresponding to the predetermined grant from a subframe in which the grant is detected to a predetermined subframe. An uplink signal is transmitted in the first uplink subframe after the frame. For example, when a grant is detected in subframe i, an uplink signal can be transmitted in the first uplink subframe after subframe i + k.

In addition, when the transmission subframe of the uplink signal is subframe i, transmission section 207 sets the transmission power of the uplink signal based on the power control adjustment value obtained by the TPC command received in subframe ik To do. Here, the power control adjustment value f (i) (or g (i)) is set based on a correction value or an absolute value associated with a value set in the TPC command. When the accumulation is valid, the correction value associated with the value set in the TPC command is accumulated, and the accumulation result is applied as the power control adjustment value. If accumulation is not valid, the absolute value associated with the value set in a single TPC command is applied as the power control adjustment value. Moreover, the power control adjustment value f (i) for PUSCH transmission may be set for each serving cell. Moreover, the power control adjustment value f (i) for PUSCH transmission may be set for each subframe set. When the PUCCH can be transmitted for each serving cell, the power control adjustment value g (i) for PUCCH transmission may be set for each serving cell. Further, when the PUCCH can be transmitted in a plurality of subframe sets, the power control adjustment value g (i) for PUCCH transmission may be set for each subframe set. When PUCCH cannot be transmitted in a plurality of subframe sets, only one power control adjustment value g (i) for PUCCH transmission is set even if a plurality of subframe sets are set. When PUCCH can be transmitted only to the primary cell, the power control adjustment value g (i) for PUCCH transmission is set for the primary cell.

When the transmission subframe of PUSCH is subframe i, transmission section 207 uses a correction value or an absolute value obtained by a TPC command received in subframe i-K _PUSCH. Then, the power control adjustment value f _c (i) is set, and the transmission power for the PUSCH transmitted in subframe i is set using the power control adjustment value f _c (i).

For FDD, transmission section 207 specifies the value of K _PUSCH for PUSCH transmission in a certain subframe as 4. For TDD, if one or more serving cells are configured in the terminal device 2 and the TDD UL / DL configuration of at least two serving cells is not the same, the TDD UL / DL configuration is the uplink reference UL for the serving cell c. Refer to the / DL setting. For any of the TDD UL / DL settings 1 to 6, the transmission unit 207 specifies the value of K _PUSCH based on, for example, the table shown in FIG. Also, for TDD UL / DL setting 0, PUSCH transmission in

subframe

2 or 7 is scheduled using PDCCH / EPDCCH with DCI format 0/4 with the least significant bit of the UL index set to “1”. If so, the transmitting unit 207 specifies the value of K _PUSCH as 7, and when performing PUSCH transmission in other uplink subframes, the value of K _PUSCH is set as shown in FIG. Identify based on the table.

Further, the uplink reference UL / DL configuration may be applied to the FDD cell. For the FDD cell to which the uplink reference UL / DL setting is applied, when the uplink reference UL / DL setting is any of 1 to 6, the transmission unit 207 sets the value of K _PUSCH to, for example, FIG. Specify based on the listed table. Also, in the case of uplink reference UL / DL setting 0, PUSCH transmission in

subframe

2 or 7 is scheduled using PDCCH / EPDCCH with DCI format 0/4 with the least significant bit of the UL index set to “1”. If the transmission unit 207 specifies the value of K _PUSCH as 7 and performs PUSCH transmission in other uplink subframes, the value of K _PUSCH is set as shown in FIG. Identify based on the table. If PUSCH transmission is not scheduled using the DCI format with the UL index for the FDD cell to which the uplink reference UL / DL configuration is applied, the transmission unit 207 sets the value of K _PUSCH to, for example, It specifies based on the table of FIG.

Further, RTT may be applied to the FDD cell. The value of K _PUSCH may be specified based on the value of RTT.

Further, when the UL index (or DAI) is not set in the DCI format for the FDD cell to which the uplink reference UL / DL configuration is applied, the transmission unit 207 sets the value of K _PUSCH to a predetermined value (for example, 4).

Further, when the UL index (or DAI) is not set in the DCI format for the FDD cell to which the RTT is applied, the transmission unit 207 specifies the value of K _PUSCH based on the value set in the RTT.

Further, when uplink reference UL / DL configuration or RTT is not applied to the FDD cell, the transmission unit 207 sets the value of K _PUSCH for the _PUSCH in a certain uplink subframe as a predetermined value (for example, 4). Identify.

Further, the transmission unit 207 specifies a downlink subframe in which a TPC command for PUSCH transmission in a subframe is transmitted based on the specified K _PUSCH value, and is obtained by the TPC command detected from the downlink subframe. Is used to set the transmission power for PUSCH transmission.

Also, the transmission unit 207 sets the value obtained from the TPC command to 0 if the subframe i is not an uplink subframe in FDD to which TDD or uplink UL / DL configuration is applied. In other words, the power control adjustment value f _c (i) in subframe i is the same as the power control adjustment value f _c (i-1) in subframe i-1.

Further, the transmission unit 207 sets the value obtained from the TPC command to 0 when DRX occurs in the subframe i. In other words, the power control adjustment value f _c (i) in subframe i is the same as the power control adjustment value f _c (i-1) in subframe i-1.

In addition, when the TPC command for subframe i is not decoded, transmitting section 207 sets the value obtained from the TPC command to 0. In other words, the power control adjustment value f _c (i) in subframe i is the same as the power control adjustment value f _c (i-1) in subframe i-1.

In addition, when information or a parameter related to any one of the first method to the fourth method is set, the transmission unit 207 performs the process for the PUCCH based on any one of the first method to the fourth method. Perform physical resource mapping.

When the receiving unit 205 receives one of the information related to the first setting or the information related to the second setting, the transmitting unit 207 determines the transmission power based on the parameter related to the first uplink power control. When the receiving unit 205 receives the information related to the first setting and the information related to the second setting, the transmission power is set based on the parameter related to the second uplink power control, and the uplink signal is transmitted. To do.

The coding unit 2071 performs coding such as turbo coding, convolution coding, and block coding on the uplink control information and data information input from the higher layer processing unit 201. The modulation unit 2073 modulates the coded bits input from the coding unit 2071 using a modulation scheme such as BPSK, QPSK, 16QAM, or 64QAM.

The uplink reference signal generation unit 2079 generates an uplink reference signal based on information related to the setting of the uplink reference signal. That is, the uplink reference signal generation unit 2079 has a cell identifier for identifying the base station apparatus 1, an uplink demodulation reference signal, a bandwidth for arranging the first uplink reference signal, the second uplink reference signal, and the like. Based on the above, the base station apparatus 1 obtains a known CAZAC sequence which is determined by a predetermined rule. Further, the uplink reference signal generation unit 2079 generates a CAZAC sequence of the uplink demodulation reference signal, the first uplink reference signal, and the second uplink reference signal that are generated based on the control signal input from the control unit 203. Giving a cyclic shift.

The uplink reference signal generation unit 2079 may initialize the reference sequence of the uplink demodulation reference signal and / or the sounding reference signal and the uplink reference signal based on a predetermined parameter. The predetermined parameter may be the same parameter for each reference signal. The predetermined parameter may be a parameter set independently for each reference signal. That is, the uplink reference signal generation unit 2079 can initialize the reference sequence of each reference signal with the same parameters if there are no independently set parameters.

The multiplexing unit 2075 rearranges the PUSCH modulation symbols in parallel on the basis of the control signal input from the control unit 203 and then performs a discrete Fourier transform (DFT: Discrete Fourier Transform) to generate the PUCCH and PUSCH signals and the generated UL. Multiplex DMRS and SRS.

The radio transmission unit 2077 performs inverse fast Fourier transform on the multiplexed signal, performs SC-FDMA modulation, adds a guard interval to the SC-FDMA-modulated SC-FDMA symbol, and generates a baseband digital signal Convert the baseband digital signal to an analog signal, generate in-phase and quadrature components of the intermediate frequency from the analog signal, remove excess frequency components for the intermediate frequency band, Frequency) signal (up-conversion), remove excess frequency components, amplify the power, and output to the transmission / reception antenna 211 for transmission.

In the embodiment of the present invention, the reception process may include a detection process. The reception process may include a demodulation process (Demodulation). The reception process may include a decoding process (Decode, Decoding).

In the terminal device 2, the priority of the physical channel / physical signal to be transmitted may be set or defined in advance according to the type of the physical channel.

In the embodiment of the present invention, the terminal device 2 may report the measurement result of the received power based on CSI-RS or DRS (Discovery Reference Signal) to the base station device 1. The terminal device 2 may perform the report periodically. The terminal device 2 may perform the report when a certain condition is satisfied.

In the embodiment of the present invention, when measuring the received power based on CSI-RS or DRS, the terminal device 2 may perform uplink signal transmission power control based on the received power. That is, the terminal device 2 may determine the downlink path loss based on the received power.

Note that, in the embodiment of the present invention, the terminal device 2 is configured such that the total transmission power of various uplink signals including the transmission power of the first uplink reference signal and / or the second uplink reference signal is the terminal device 2. When the maximum transmission power set in is exceeded, the first uplink reference signal and / or the second uplink reference signal may not be transmitted.

In the embodiment of the present invention, when a certain condition is satisfied, the base station apparatus 1 or the terminal apparatus 2 sets one as an uplink reference UL-DL setting and sets the other as a downlink reference UL-DL setting. May be. For example, the terminal apparatus 2 may set the uplink reference UL-DL setting and the downlink reference UL-DL setting after receiving the information on the first setting and the information on the second setting. Note that the DCI format related to the uplink (for example, DCI format 0/4) may be transmitted in the downlink subframe set in the uplink reference UL-DL setting.

Also, the uplink reference UL-DL setting and the downlink reference UL-DL setting may be set using the same table. However, when the uplink reference UL-DL setting and the downlink reference UL-DL setting index are set based on the same table, the uplink reference UL-DL setting and the downlink reference UL-DL setting are set with different indexes. It is preferred that That is, it is preferable that different subframe patterns are set for the uplink reference UL-DL setting and the downlink reference UL-DL setting.

When multiple TDD UL / DL settings (UL / DL settings, UL-DL settings) are indicated for one serving cell (primary cell, secondary cell), either one is uplinked according to the conditions. The reference UL-DL setting may be set, and the other may be set as the downlink reference UL-DL setting. The uplink reference UL-DL configuration determines at least correspondence between a subframe in which a physical downlink control channel is arranged and a subframe in which a physical uplink shared channel corresponding to the physical downlink control channel is arranged. And may be different from the actual signal transmission direction (that is, uplink or downlink). The downlink reference UL-DL configuration is used to determine a correspondence between at least a subframe in which a physical downlink shared channel is arranged and a subframe in which HARQ-ACK corresponding to the physical downlink shared channel is transmitted. The actual signal transmission direction (that is, uplink or downlink) may be different. That is, the uplink reference UL-DL configuration specifies (selects and determines) the correspondence between the subframe n in which PDCCH / EPDCCH / PHICH is arranged and the subframe n + k in which PUSCH corresponding to the PDCCH / EPDCCH / PHICH is arranged. To be used). When one primary cell is configured, or when one primary cell and one secondary cell are configured, and the uplink reference UL-DL configuration for the primary cell and the uplink reference UL-DL configuration for the secondary cell are the same In each of the two serving cells, the corresponding uplink reference UL-DL configuration includes a subframe in which PDCCH / EPDCCH / PHICH is allocated and a subframe in which PUSCH corresponding to the PDCCH / EPDCCH / PHICH is allocated. Used to determine correspondence. The downlink reference UL-DL configuration is used to specify (select or determine) the correspondence between the subframe n in which the PDSCH is arranged and the subframe n + k in which the HARQ-ACK corresponding to the PDSCH is transmitted. . When one primary cell is configured, or when one primary cell and one secondary cell are configured, and the downlink reference UL-DL configuration for the primary cell and the downlink reference UL-DL configuration for the secondary cell are the same In each of the two serving cells, the corresponding downlink reference UL-DL configuration specifies the correspondence between the subframe n in which the PDSCH is arranged and the subframe n + k in which the HARQ-ACK corresponding to the PDSCH is transmitted ( Used to select and determine).

In addition, the terminal device 2 has a TDD UL / DL setting for uplink transmission reference (first TDD UL / DL setting) and a TDD UL / DL setting for downlink transmission reference (second TDD UL / DL setting). Is set, and further, when information related to uplink transmission power control is set, the same type of subframe is set in the first TDD UL / DL setting and the second TDD UL / DL setting. The uplink power control of the subframe is set based on the parameters related to the first uplink power control, and different types of subframes are set in the first TDD UL / DL setting and the second TDD UL / DL setting. If so, the uplink power of the subframe is set based on the second uplink power control parameter. The first TDD UL / DL setting may be referred to as an uplink reference UL / DL setting, and the second TDD UL / DL setting may be referred to as a downlink reference UL / DL setting.

Note that the flexible subframe is an uplink subframe and a subframe that is a downlink subframe. The flexible subframe is a downlink subframe and a subframe that is a special subframe. The flexible subframe is an uplink subframe and a subframe that is a special subframe. That is, the flexible subframe is a subframe that is a first subframe and a second subframe. For example, a subframe set as a flexible subframe is processed as a first subframe (for example, an uplink subframe) in the case of condition 1, and a second subframe (for example, in the case of condition 2). Downlink subframe).

Note that the flexible subframe may be set based on the first setting and the second setting. For example, when a certain subframe i is set as an uplink subframe in the first setting and as a downlink subframe in the second setting, the subframe i is a flexible subframe. The flexible subframe may be set based on information indicating a subframe pattern of the flexible subframe.

In addition, multiple subframe sets are not two TDD UL / DL settings, but one TDD UL / DL setting and flexible subframe pattern (downlink candidate subframe pattern or uplink candidate subframe pattern, additional subframe) May be set based on If the subframe index indicated by the flexible subframe pattern does not transmit an uplink signal in the subframe even if it is indicated as an uplink subframe in the TDD UL / DL setting, the terminal apparatus 2 It is possible to receive a link signal, and even if it is indicated as a downlink subframe in the TDD UL / DL setting, if it is instructed to transmit an uplink signal in that subframe in advance, the uplink signal Can be sent. A specific subframe may be indicated as an uplink / downlink candidate subframe.

When a certain condition is satisfied, the terminal device 2 may recognize either one as a subframe set for uplink and the other as a subframe set for downlink. Here, the subframe set for uplink is a set of subframes configured for PUSCH and PHICH transmission, and the downlink subframe set is configured for PDSCH and HARQ transmission. Set of subframes. Information indicating the relationship between the PUSCH and PHICH subframes and information indicating the relationship between the PDSCH and HARQ subframes may be set in the terminal device 2 in advance.

In the embodiment of the present invention, a plurality of subframe sets may be set for one serving cell (primary cell, secondary cell, carrier frequency, transmission frequency, component carrier). There may be a cell in which a plurality of subframe sets are set and a cell in which a plurality of subframe sets are not set.

In the embodiment of the present invention, when two or more subframe sets are configured independently for one serving cell, the maximum transmission set for each terminal apparatus 2 for each subframe set. The power (P _CMAX , P _{CMAX, c} ) may be set. That is, the terminal device 2 may set a plurality of independent maximum transmission powers. That is, a plurality of maximum transmission powers (P _CMAX , P _{CMAX, c} ) may be set for one serving cell. Also, a plurality of maximum allowable output powers (P _{EMAX, c} ) may be set for one serving cell.

Further, when the resource allocation of various uplink signals is the same, the base station apparatus 1 can detect various uplink signals depending on the difference in the signal sequence of each uplink signal. That is, the base station apparatus 1 can identify each uplink signal by the difference in the signal sequence of the received uplink signal. Moreover, the base station apparatus 1 can determine whether it is transmission addressed to its own station based on the difference in the signal sequence of the received uplink signal.

Furthermore, when the base station apparatus 1 is instructed to measure received power by CSI-RS or DRS, the terminal apparatus 2 may calculate a downlink path loss based on the measurement result and use it for uplink transmission power control. .

Here, the received power measurement may be referred to as a reference signal received power (RSRP) measurement or a received signal power measurement. The reception quality measurement may also be referred to as reference signal reception quality (RSRQ: “Reference Signal Signal Received Quality” measurement or reception signal quality measurement).

In addition, CSI-RS or DRS resource allocation (Resource allocation, mapping to resources, elements, mapping to physical resources) may be frequency-shifted. The frequency shift of CSI-RS or DRS may be determined based on the physical cell ID. Further, the frequency shift of CSI-RS or DRS may be determined based on the virtual cell ID.

For example, if the terminal device 2 is not notified of information from the base station device 1, the terminal device 2 measures the received power of the first downlink reference signal. Information indicating whether or not to measure the received power of the second downlink reference signal is notified from the base station apparatus 1 to the terminal apparatus 2. When the instruction information indicates that the received power measurement of the second downlink reference signal can be performed, the terminal device 2 performs the received power measurement of the second downlink reference signal. At this time, the terminal device 2 may measure the received power of the first downlink reference signal in parallel. When the terminal device 2 indicates that the instruction information cannot measure the received power of the second downlink reference signal, the terminal device 2 measures the received power of only the first downlink reference signal. Do. Further, the instruction information may include information instructing whether or not to measure the reception quality of the second downlink reference signal. Further, the third downlink reference signal may perform reception power measurement regardless of the instruction information.

When two subframe sets are configured for one serving cell, if the second subframe set is a subframe pattern of a flexible subframe, a DCI format including a TPC command field for the flexible subframe is received. Information indicating a possible subframe pattern may be transmitted from the base station apparatus 1 to the terminal apparatus 2.

A subframe pattern in which a TPC command applicable to an uplink subframe belonging to the first subframe set is transmitted and a TPC command applicable to an uplink subframe belonging to the second subframe set are Each subframe pattern to be transmitted may be set. Table management may be performed for association (linking) between an uplink subframe and a downlink subframe in which a DCI format including a TPC command for the uplink subframe is transmitted.

Also, the RSRP measurement result may be independent in a subframe set. Measurement of RSRP by CRS received in the downlink subframe of the fixed subframe and measurement of RSRP by CRS received in the flexible subframe may be performed independently.

In the embodiment of the present invention, when a plurality of subframe sets are set in one cell (serving cell, primary cell, secondary cell), these subframe sets are indicated by a bitmap (bit string). Also good. For example, a subframe set including fixed subframes may be indicated by a bit string. In addition, a subframe set including flexible subframes may be indicated by a bit string. In addition, these subframe sets may be set independently for FDD and TDD. For example, in FDD, a 40-bit bit string, in TDD, in a subframe setting (TDD UL / DL setting) 1 to 5, a 20-bit bit string, in subframe setting 0, in a 70-bit bit string, in subframe setting 6, It may be indicated by a 60-bit bit string. The first bit or the leftmost bit of these bit strings corresponds to a subframe # 0 of a radio frame satisfying a system frame number (SFN: System Frame Number) mod x = 0. Of the bit string, a subframe in which “1” is set is used. For example, when “1011000011 (when the left end indicates subframe # 0)” or “1100001101 (when the right end indicates subframe # 0)” is indicated by a 10-bit bit string, subframes # 0, # 2, # 3, # 8 and # 9 are used.

In the embodiment of the present invention, when a plurality of subframe sets are configured in one cell (serving cell, primary cell, secondary cell), the uplink subframe set is based on the uplink reference UL / DL configuration. The downlink subframe set may be set based on the downlink reference UL / DL setting.

In the embodiment of the present invention, for a primary cell, a subframe pattern (measSubframePatternPCell) for primary cell measurement such as RSRP / RSRQ / radio link monitoring, and a subframe pattern (csi-measSubframeSet1, csi- measSubframeSet2) and a subframe pattern (epdcch-SubframePattern) for monitoring EPDCCH are set.

In the embodiment of the present invention, a subframe pattern (epdcch-SubframePattern) for monitoring the EPDCCH is set for the secondary cell.

In the embodiment of the present invention, a subframe pattern (measSubframePatternNeigh) for measuring RSRP and RSRQ at a carrier frequency is set for a neighboring cell.

In the embodiment of the present invention, the subframe pattern (csi-measSubframeSet1, csi-measSubframeSet2) for measuring CSI may be common to the primary cell and the secondary cell.

In the embodiment of the present invention, the subframe pattern may be set independently for FDD and TDD. For example, in FDD, a 40-bit bit string, in TDD, in a subframe setting (TDD UL / DL setting) 1 to 5, a 20-bit bit string, in subframe setting 0, in a 70-bit bit string, in subframe setting 6, It may be indicated by a 60-bit bit string. The first bit or the leftmost bit of these bit strings corresponds to a subframe # 0 of a radio frame satisfying a system frame number (SFN: System Frame Number) mod x = 0. Of the bit string, a subframe in which “1” is set is used. For example, in the case of “1011000011 (when the left end indicates subframe # 0)” or “1100001101 (when the right end indicates subframe # 0)” in a 10-bit bit string, subframes # 0, # 2, # 3, # 8 and # 9 are used.

In the embodiment of the present invention, the TDD UL / DL setting is transmitted (notified and transmitted) from the base station apparatus 1 to the terminal apparatus 2. Further, the TDD UL / DL setting may be notified by SIB1. Further, the TDD UL / DL setting may be notified by a SIB different from SIB1. Further, the TDD UL / DL setting may be notified by higher layer signaling (RRC signaling, RRC message). For the terminal apparatus 2 that performs communication using a plurality of TDD UL / DL settings, the base station apparatus 1 may notify the TDD UL / DL settings using L1 signaling or L2 signaling. Moreover, the base station apparatus 1 may notify the TDD UL / DL setting in the DCI format, PDCCH / EPDCCH, or MAC CE to the terminal apparatus 2 that performs communication using a plurality of TDD UL / DL settings.

In the embodiment of the present invention, the virtual UL / DL setting is transmitted (notified and transmitted) from the base station apparatus 1 to the terminal apparatus 2. Further, the virtual UL / DL setting may be notified by SIB1. Further, the virtual UL / DL setting may be notified by an SIB different from SIB1. Further, the virtual UL / DL configuration may be notified by higher layer signaling (RRC signaling, RRC message). For the terminal apparatus 2 that performs communication using a plurality of virtual UL / DL settings, the base station apparatus 1 performs virtual UL / DL settings by L1 signaling (DCI format, PDCCH / EPDCCH) or L2 signaling (MAC CE). You may be notified. Moreover, the base station apparatus 1 may notify the virtual UL / DL setting with a DCI format, PDCCH / EPDCCH, or MAC CE to the terminal apparatus 2 that performs communication using a plurality of virtual UL / DL settings.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings are set in one cell, one is used as an uplink reference and one is used as a downlink reference. The TDD UL / DL setting set as an uplink reference is used to perform processing related to uplink transmission / reception, such as PUSCH transmission timing, PHICH reception timing for PUSCH, and uplink grant reception timing. Also, TDD UL / DL settings set as downlink reference include PDCCH / EPDCCH / PDSCH reception timing (monitoring), downlink grant reception timing, PUCCH transmission timing with HARQ-ACK, and so on. Used to perform processing related to reception.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for a primary cell, each subframe pattern in the primary cell is a TDD UL / DL setting notified by SIB1. May be determined based on Further, each subframe pattern in the primary cell may be determined based on the TDD UL / DL configuration notified by higher layer signaling (RRC signaling, RRC message). In addition, each subframe pattern in the primary cell may be determined based on the TDD UL / DL configuration notified by L1 signaling (downlink grant, uplink grant, PDCCH / EPDCCH, DCI format). Further, each subframe pattern in the primary cell may be determined based on the TDD UL / DL setting notified by L2 signaling (MAC CE). Further, each subframe pattern in the primary cell may be determined based on a TDD UL / DL configuration (uplink reference UL / DL configuration) used as an uplink reference. Further, each subframe pattern in the primary cell may be determined based on a TDD UL / DL configuration (downlink reference UL / DL configuration) used as a downlink reference. Each subframe pattern in the primary cell may be determined based on a common TDD UL / DL configuration. Also, each subframe pattern in the primary cell may be determined independently. For example, the subframe pattern for primary cell measurement is based on the TDD UL / DL configuration notified by SIB1, and the subframe pattern for monitoring EPDCCH is TDD notified by higher layer signaling (RRC signaling, RRC message). It may be determined based on the UL / DL setting. The subframe pattern for primary cell measurement may be determined based on the TDD UL / DL configuration notified by SIB1, and the subframe pattern for measuring CSI may be determined based on L1 signaling. Specifically, the subframe pattern for primary cell measurement is based on a bit string corresponding to subframe setting (TDD UL / DL setting) 0, and the subframe pattern for monitoring EPDCCH is subframe setting (TDD UL / DL / Based on (DL setting) 3, the subframe pattern for measuring CSI may be based on subframe setting (TDD UL / DL setting) 6. Note that the value of the subframe setting (TDD UL / DL setting) is an example, and may be a different value.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for a secondary cell, the subframe pattern in the secondary cell is TDD UL notified in the system information for the secondary cell. It may be determined based on the / DL setting. Further, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL configuration notified by higher layer signaling (RRC signaling, RRC message). Also, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL configuration notified by L1 signaling (downlink grant, uplink grant, PDCCH / EPDCCH, DCI format). Further, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL setting notified by L2 signaling (MAC CE). Further, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL setting (uplink reference UL / DL setting) set as the uplink reference. Further, the subframe pattern in the secondary cell may be determined based on the TDD UL / DL setting (downlink reference UL / DL setting) set as the downlink reference. In addition, when the sub-frame pattern for measuring CSI is set independently of the primary cell, the sub-frame pattern for measuring CSI in the secondary cell may be determined independently of the primary cell.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for each of the primary cell and the secondary cell, the subframe patterns in the primary cell and the secondary cell are the same. May be determined based on the TDD UL / DL setting. For example, the TDD UL / DL setting notified by SIB1, the TDD UL / DL setting notified by higher layer signaling, or the TDD UL / DL notified by L1 / L2 signaling may be used. Setting may be a TDD UL / DL setting (uplink reference UL / DL setting) set as an uplink reference, or a TDD UL / DL setting (downlink) set as a downlink reference Link reference UL / DL setting). Also, each subframe pattern in each of the primary cell and the secondary cell may be determined independently. For example, the subframe pattern in the primary cell is determined based on the TDD UL / DL setting notified by SIB1, and the subframe pattern in the secondary cell is determined based on the TDD UL / DL setting notified by L1 / L2 signaling. Also good. Further, the subframe pattern in the primary cell may be based on the TDD UL / DL setting set as the uplink reference, and the subframe pattern in the secondary cell may be based on the TDD UL / DL setting set as the downlink reference. .

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for the primary cell and the secondary cell, the uplink reference UL / DL setting of the primary cell is SIB1 ( Alternatively, it may be notified by system information other than SIB1). Further, the uplink reference UL / DL configuration of the primary cell may be notified by higher layer signaling (RRC signaling, RRC message). Further, the uplink reference UL / DL configuration of the primary cell may be notified by common / dedicated higher layer signaling (RRC signaling, RRC message) between the terminal devices. The uplink reference UL / DL configuration of the primary cell may be notified by L1 / L2 signaling. The downlink reference UL / DL configuration of the primary cell may be notified by the same method as shown in the uplink reference UL / DL configuration of the primary cell. Further, the uplink reference UL / DL setting and the downlink reference UL / DL setting of the primary cell may be set as independent parameters.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for each of the primary cell and the secondary cell, the uplink reference UL / DL setting of the secondary cell is the system information. May be notified by higher layer signaling (RRC signaling, RRC message) corresponding to. Further, the uplink reference UL / DL configuration of the secondary cell may be notified by common / dedicated higher layer signaling (RRC signaling, RRC message) between terminal devices, which does not correspond to system information. The uplink reference UL / DL configuration of the secondary cell may be notified by L1 / L2 signaling. The downlink reference UL / DL configuration of the secondary cell may be notified by the same method as shown in the uplink reference UL / DL configuration of the secondary cell. Also, the uplink reference UL / DL setting and the downlink reference UL / DL setting of the secondary cell may be set as independent parameters.

In the embodiment of the present invention, the downlink reference UL / DL setting (TDD UL / DL setting) for the serving cell is determined based on the TDD UL / DL setting of the primary cell and the TDD UL / DL setting of the secondary cell.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for the primary cell and the secondary cell, the downlink reference UL / DL setting for the serving cell The TDD UL / DL setting notified by SIB1 may be used, and the secondary cell may be determined as the TDD UL / DL setting notified by higher layer signaling. The downlink reference UL / DL setting for the serving cell is the TDD UL / DL setting notified by SIB1 in the UL / DL setting of the primary cell, and the TDD UL / DL setting notified by L1 signaling in the UL / DL setting of the secondary cell. As may be determined. Also, the downlink reference UL / DL setting for the serving cell is determined with the UL / DL setting of the primary cell as the downlink reference UL / DL setting and the UL / DL setting of the secondary cell as the downlink reference UL / DL setting. Also good. Also, the downlink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of the primary cell as the downlink reference UL / DL setting and the UL / DL setting of the secondary cell as the uplink reference TDD UL / DL setting. May be. Also, the downlink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of the primary cell as the uplink reference TDD UL / DL setting, and the UL / DL setting of the secondary cell as the downlink reference TDD UL / DL setting. May be. The UL / DL setting of the primary cell and the secondary cell is an example, and the notified TDD UL / DL setting may be used depending on other conditions.

In the embodiment of the present invention, the uplink reference UL / DL setting (TDD UL / DL setting) for the serving cell is determined based on the TDD UL / DL setting of a certain serving cell and the TDD UL / DL setting of another serving cell.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for a plurality of serving cells, the uplink reference UL / DL setting for the serving cell is a SIB1. The notified TDD UL / DL setting may be used, and other serving cells may be determined as the TDD UL / DL setting notified by higher layer signaling. Also, the uplink reference UL / DL setting for the serving cell is the TDD UL / DL setting notified by SIB1 of the UL / DL setting of a certain serving cell, and the TDD UL notified of the UL / DL setting of other serving cells by L1 signaling. / DL setting may be determined. Also, the uplink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of a certain serving cell as an uplink reference UL / DL setting and the UL / DL setting of another serving cell as an uplink reference UL / DL setting. May be. Also, the uplink reference UL / DL setting for the serving cell is determined by setting the UL / DL setting of a certain serving cell as an uplink reference UL / DL setting and the UL / DL setting of another serving cell as a downlink reference UL / DL setting. May be. Moreover, the TDD UL / DL setting in a plurality of serving cells is an example, and may be a TDD UL / DL setting set under other conditions.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for a plurality of serving cells (primary cell and secondary cell) and cross-carrier scheduling is performed, The downlink transmission / reception process is performed based on the UL / DL setting for the serving cell. Further, uplink transmission / reception processing in the primary cell is performed based on the uplink reference UL / DL setting for the serving cell. In this case, if the downlink grant for the secondary cell is detected in the primary cell, the downlink reception (PDSCH reception) of the secondary cell is performed based on the downlink reference UL / DL setting for the serving cell. Also, HARQ-ACK for downlink reception of the secondary cell is transmitted on the PUCCH of the primary cell. In that case, transmission of PUCCH is performed based on the downlink reference UL / DL setting with respect to a serving cell. In this case, if the uplink grant for the secondary cell is detected in the primary cell, the uplink transmission (for example, PUSCH transmission) of the secondary cell may be performed based on the uplink reference UL / DL setting for the serving cell. Good. The PHICH for the uplink transmission of the secondary cell is transmitted in the primary cell. At this time, the transmission of PHICH is performed based on the uplink reference UL / DL setting for the serving cell. That is, in this case, the terminal apparatus 2 and the base station apparatus 1 perform uplink / downlink transmission / reception based on the uplink reference UL / DL setting and the downlink reference UL / DL setting. Also, in this case, for PUSCH transmission scheduled for the serving cell c in the subframe n (for serving cell c or a cell different from the serving cell c), the terminal device 2 is determined by the PHICH resource of the serving cell c in the subframe n + k _PHICH. The k _PHICH is determined based on the uplink reference UL / DL configuration for the serving cell. In this case, if the base station apparatus 1 receives the PUSCH scheduled for the serving cell c in the subframe n (for the serving cell c or a cell different from the serving cell c), the base station apparatus 1 uses the PHICH resource of the serving cell c in the subframe n + k _PHICH. , HARQ-ACK for PUSCH is transmitted.

In the embodiment of the present invention, when a plurality of TDD UL / DL settings (UL / DL settings) are set for an adjacent cell, the subframe pattern in the adjacent cell is TDD UL notified in the system information for the adjacent cell. It may be determined based on the / DL setting. Further, the subframe pattern in the neighboring cell may be determined based on the TDD UL / DL configuration notified by higher layer signaling (RRC signaling, RRC message). Further, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting notified by common / dedicated higher layer signaling (RRC signaling, RRC message) between the terminal devices. Further, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL configuration notified by L1 signaling (downlink grant, uplink grant, PDCCH / EPDCCH, DCI format). Further, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting notified by L2 signaling (MAC CE). Further, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting (uplink reference UL / DL setting) set as the uplink reference. Also, the subframe pattern in the adjacent cell may be determined based on the TDD UL / DL setting (downlink reference UL / DL setting) set as the downlink reference.

In the embodiment of the present invention, resource elements and resource blocks are used as mapping units for various uplink signals and downlink signals, and symbols, subframes, and radio frames are used as transmission units in the time direction. This is not a limitation. The same effect can be obtained even if a region and a time unit composed of an arbitrary frequency and time are used instead. In the embodiment of the present invention, a case where demodulation is performed using a precoded RS is described, and a port (antenna port) corresponding to the precoded RS is a port equivalent to the MIMO layer. Although explained using, it is not restricted to this. In addition, the same effect can be obtained by applying the present invention to ports corresponding to different reference signals. For example, Unprecoded (Nonprecoded) RS is used instead of Precoded RS, and a port equivalent to the output end after precoding processing or a port equivalent to a physical antenna (or a combination of physical antennas) can be used as a port. .

In the embodiment of the present invention, when only DCI format 3 / 3A is received in a certain downlink subframe, the correction value corresponding to the value set in the TPC command field included in DCI format 3 / 3A (Or absolute value) is applied to the power control adjustment value for the transmission power of the PUSCH transmitted in a specific subframe set, regardless of which subframe set the downlink subframe belongs to. When only the DCI format 3 / 3A is received in a certain downlink subframe, the accumulation of the TPC command included in the DCI format 3 / 3A is the power used for the transmission power for the PUSCH transmitted in the specific subframe set. It may be applied to the control adjustment value. The specific subframe set may be a fixed subframe set, a flexible subframe set, or an arbitrary subframe set.

In the embodiment of the present invention, parameters related to uplink power control are parameters used for transmission power control of uplink physical channels / physical signals (PUSCH, PUCCH, PRACH, SRS, DMRS, etc.) Parameters used for transmission power control include information on switching or (re) setting of various parameters used for setting transmission power of various uplink physical channels. Parameters related to downlink transmission power control include downlink physical channels / physical signals (CRS, UERS (DL DMRS), CSI-RS, PDSCH, PDCCH / EPDCCH, PBCH, PSS / SSS, PMCH, PRS, etc.). It is a parameter used for transmission power control, and the parameter used for transmission power control includes information on switching or (re) setting of various parameters used for setting transmission power of various downlink physical channels. It is out.

In the embodiment of the present invention, the base station device 1 may be configured to set a plurality of virtual cell IDs for one terminal device 2. For example, a network including the base station apparatus 1 and at least one base station apparatus 1 may be configured to set a virtual cell ID independently for each physical channel / physical signal. A plurality of virtual cell IDs may be set for one physical channel / physical signal. That is, the virtual cell ID may be set for each physical channel / physical signal setting. Also, the virtual cell ID may be shared by a plurality of physical channels / physical signals.

In the description of the embodiment of the present invention, for example, setting power includes setting a value of power, and setting power includes setting a value for a parameter related to power, and calculates power. Doing includes calculating a power value, measuring the power includes measuring the power value, and reporting the power includes reporting the power value. Thus, the expression “power” includes the meaning of the value of power as appropriate.

In the description of the embodiment of the present invention, not transmitting includes not performing transmission processing. Moreover, not performing transmission includes not performing signal generation for transmission. Also, not transmitting includes generating up to a signal (or information) and not transmitting a signal (or information). Also, not receiving includes not receiving processing. Further, not receiving includes not performing detection processing. Further, not receiving includes not performing decoding / demodulation processing.

In the description of the embodiment of the present invention, for example, calculating the path loss includes calculating the value of the path loss. Thus, the expression “path loss” includes the meaning of the value of path loss as appropriate.

In the description of the embodiment of the present invention, setting various parameters includes setting various parameter values. Thus, the expression “various parameters” includes the meaning of various parameter values as appropriate.

The program that operates in the base station device 1 and the terminal device 2 related to the present invention is a program (a program that causes a computer to function) that controls the CPU and the like so as to realize the functions of the above-described embodiments related to the present invention. Information handled by these devices is temporarily stored in the RAM at the time of processing, then stored in various ROMs and HDDs, read out by the CPU, and corrected and written as necessary. As a recording medium for storing the program, a semiconductor medium (for example, ROM, nonvolatile memory card, etc.), an optical recording medium (for example, DVD, MO, MD, CD, BD, etc.), a magnetic recording medium (for example, magnetic tape, Any of a flexible disk etc. may be sufficient. In addition, by executing the loaded program, not only the functions of the above-described embodiment are realized, but also based on the instructions of the program, the processing is performed in cooperation with the operating system or other application programs. The functions of the invention may be realized.

Also, when distributing to the market, the program can be stored and distributed on a portable recording medium, or transferred to a server computer connected via a network such as the Internet. In this case, the storage device of the server computer is also included in the present invention. Moreover, you may implement | achieve part or all of the base station apparatus 1 and the terminal device 2 in embodiment mentioned above as LSI which is typically an integrated circuit. Each functional block of the base station apparatus 1 and the terminal apparatus 2 may be individually chipped, or a part or all of them may be integrated into a chip. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, an integrated circuit based on the technology can also be used.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like without departing from the gist of the present invention. The present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. It is. Moreover, it is the element described in embodiment of this invention, and the structure which substituted the element which has the same effect is also contained.

Note that the present invention is not limited to the above-described embodiment. The present invention may be applied to all portable terminals. For example, the mobile terminal includes a tablet and a camera device. That is, the present invention is applied to all devices equipped with the device, chip, or program of the present invention. The terminal device of the present invention is not limited to application to a mobile station, but is a stationary or non-movable electronic device installed indoors or outdoors, such as AV equipment, kitchen equipment, cleaning / washing equipment Needless to say, it can be applied to air conditioning equipment, office equipment, vending machines, and other daily life equipment. Further, the present invention is suitable for use in a radio base station apparatus, a radio terminal apparatus, a radio communication system, and a radio communication method.

The present invention can be applied to mobile phones, personal computers, tablet computers, and the like.

DESCRIPTION OF SYMBOLS 1 Base station apparatus 2 Terminal apparatus 101 Upper layer process part 103 Control part 105 Reception part 107 Transmission part 109 Channel measurement part 111 Transmission / reception antenna 1051 Decoding part 1053 Demodulation part 1055 Demultiplexing part 1057 Wireless reception part 1071 Encoding part 1073 Modulation part 1075 Multiplexer 1077 Radio transmitter 1079 Downlink reference signal generator 201 Upper layer processor 203 Controller 205 Receiver 207 Transmitter 209 Channel measurement unit 211 Transmit / receive antenna 2051 Decoder 2053 Demodulator 2055 Demultiplexer 2057 Radio receiver 2071 Coding unit 2073 Modulating unit 2075 Multiplexing unit 2077 Radio transmitting unit 2079 Uplink reference signal generating unit

Claims

A terminal device that communicates with a base station device,
A receiving unit that receives information on the configuration of the physical uplink control channel using higher layer signaling; and
When the first parameter and the second parameter are set in the information related to the setting of the physical uplink control channel, based on the first method using the first parameter and the second parameter, Perform physical resource mapping for the physical uplink control channel,
If the first parameter and the second parameter are not set in the information related to the setting of the physical uplink control channel, the second method that does not use the first parameter and the second parameter is adopted. And a transmitter that performs physical resource mapping on the physical uplink control channel.
The physical resource mapping for the physical uplink control channel based on the first scheme includes a variable m set based on the format of the physical uplink control channel, an uplink bandwidth N UL RB represented by a resource block, and , Where the first parameter is the offset N RB_offset_low at the lower end of the resource block and the second parameter is the offset N RB_offset_high at the upper end of the resource block,

The physical resource mapping for the physical uplink control channel based on the second scheme is

The terminal device of Claim 1 shown by these.
A base station device that communicates with a terminal device,
A transmission unit that transmits information on the configuration of the physical uplink control channel using higher layer signaling; and
When the first parameter and the second parameter are set in the information related to the configuration of the physical uplink control channel, the physical uplink control channel is received from the physical resource mapped based on the first scheme,
When the first parameter and the second parameter are not set in the information related to the configuration of the physical uplink control channel, the physical uplink control channel is received from the physical resource mapped based on the second scheme. A base station apparatus.
The physical resource mapping for the physical uplink control channel based on the first scheme includes a variable m set based on the format of the physical uplink control channel, an uplink bandwidth N UL RB represented by a resource block, and , Where the first parameter is the offset N RB_offset_low at the lower end of the resource block and the second parameter is the offset N RB_offset_high at the upper end of the resource block,

The physical resource mapping for the physical uplink control channel based on the second scheme is

The base station apparatus of Claim 3 shown by these.
A terminal device method for communicating with a base station device,
Receiving information on the configuration of the physical uplink control channel using higher layer signaling;
When the first parameter and the second parameter are set in the information related to the setting of the physical uplink control channel, based on the first method using the first parameter and the second parameter, Performing physical resource mapping for the physical uplink control channel;
If the first parameter and the second parameter are not set in the information related to the setting of the physical uplink control channel, the second method that does not use the first parameter and the second parameter is adopted. Performing physical resource mapping for the physical uplink control channel based on the method.
A base station apparatus method for communicating with a terminal apparatus,
Transmitting information on the configuration of the physical uplink control channel using higher layer signaling;
A step of receiving a physical uplink control channel from a physical resource mapped based on the first scheme when the first parameter and the second parameter are set in the information related to the configuration of the physical uplink control channel When,
When the first parameter and the second parameter are not set in the information related to the configuration of the physical uplink control channel, the physical uplink control channel is received from the physical resource mapped based on the second scheme. And a step comprising: