WO2017193921A1

WO2017193921A1 - Method and device for sending and detecting uplink and downlink scheduling information

Info

Publication number: WO2017193921A1
Application number: PCT/CN2017/083666
Authority: WO
Inventors: 王磊; 高雪娟; 郑方政
Original assignee: 电信科学技术研究院
Priority date: 2016-05-12
Filing date: 2017-05-09
Publication date: 2017-11-16
Also published as: CN107371262B; CN107371262A

Abstract

Disclosed are a method and device for sending and detecting uplink and downlink scheduling information. The method comprises: during sending, sending downlink scheduling information on a first downlink control channel, and sending uplink scheduling information on a second downlink control channel; and during detection of a terminal, detecting the downlink scheduling information on the first downlink control channel, and detecting the uplink scheduling information on the second downlink control channel, wherein the first downlink control channel and the second downlink control channel are independent of each other. In the present invention, search spaces of uplink and downlink scheduling information are independently defined, and the terminal receives uplink scheduling information and downlink scheduling information at different resource locations. Therefore, time-frequency resources can be scheduled more flexibly, and a shorter transmission time interval and various service types can be supported.

Description

Method and device for transmitting and detecting uplink and downlink scheduling information

This application claims the priority of the Chinese patent application filed on May 12, 2016, the Chinese Patent Office, the application number is 201610316520.2, and the invention name is “a method for transmitting and detecting the uplink and downlink scheduling information”. The citations are incorporated herein by reference.

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for transmitting and detecting uplink and downlink scheduling information.

Background technique

The mobile Internet is subverting the traditional mobile communication business model, providing users with an unprecedented experience, which has a profound impact on all aspects of people's work and life. The mobile Internet will promote the further upgrade of human social information interaction methods, providing users with a richer business experience such as augmented reality, virtual reality, ultra high definition (3D) video, mobile cloud and so on. The further development of the mobile Internet will bring about a thousand times increase in mobile traffic in the future, and promote a new round of changes in mobile communication technologies and industries. The Internet of Things has expanded the range of services for mobile communications, from human-to-human communication to the intelligent interconnection of people and things, things and things, making mobile communication technology penetrate into a wider range of industries and fields. In the future, mobile medical, car networking, smart home, industrial control, environmental monitoring, etc. will promote the explosive growth of IoT applications, and hundreds of billions of devices will access the network to achieve a true “Internet of Everything”. At the same time, massive device connectivity and diverse IoT services will also bring new technical challenges to mobile communications.

As new business requirements continue to emerge and become more demanding, higher performance demands are placed on future mobile communication systems, such as higher peak rates, better user experience rates, smaller latency, and higher reliability. Higher spectral efficiency and higher energy efficiency, and need to support more user access and use various types of services. In order to support a large number of types of terminal connections and different types of services, the flexible configuration of uplink and downlink resources has become a major trend in technology development. The future system resources can be divided into different sub-bands according to different services, and different transmission time intervals (TTIs) of different lengths are allocated on the sub-bands to meet various service requirements.

FIG. 1 is a schematic structural diagram of a Frame Structure type 1, and a Long Term Evolution (LTE) Frequency Division Duplex (FDD) system uses a frame structure (Frame Structure type 1, referred to as FS1), and its structure is as shown in FIG. 1 is shown. In the FDD system, the uplink and downlink transmissions use different carrier frequencies, and both the uplink and downlink transmissions use the same frame structure. On each carrier, a 10ms-length radio frame contains 10 1ms subframes, each of which is divided into two 0.5ms long slots. The TTI duration of uplink and downlink data transmission is 1 ms.

2 is a schematic structural diagram of a Frame structure type 2 (for 5ms switch-point periodicity), and the existing time is The Time Division Duplex (LTE TDD) system uses a Frame Structure type 2 (FS2), as shown in FIG. 2. In a TDD system, uplink and downlink transmissions use different subframes or different time slots on the same frequency. Each 10 ms radio frame in FS2 consists of two 5 ms half frames, each of which contains five subframes of 1 ms length. The sub-frames in FS2 are classified into three types: downlink sub-frames, uplink sub-frames, and special sub-frames. Each special sub-frame consists of Downlink Pilot Time Slot (DwPTS), Guard Period (GP), and Uplink Pilot Time Slot (UpPTS) is composed of three parts. The DwPTS can transmit downlink pilot, downlink service data and downlink control signaling; the GP does not transmit any signal; the UpPTS only transmits random access and Sounding Reference Symbol (SRS), and cannot transmit uplink service or uplink control information. Each field includes at least one downlink subframe and at least one uplink subframe, and at most one special subframe. Table 7 lists the seven uplink and downlink subframe configurations supported by FS2.

Table 1: Uplink-downlink configurations

Figure 3 is a schematic diagram of a Downlink resource grid. As shown in the figure, in the existing LTE, the minimum resource granularity in the time domain is an Orthogonal Frequency Division Multiplex (OFDM) symbol. The minimum resource granularity on a domain is one subcarrier. (k, l) is the number of a Resource Element (RE). among them

Physical Resource Block (PRB) is a larger dimensional resource unit.

RE composition. There is a PRB pair in a subframe. The PRB pair is the basic unit of data resource allocation.

The downlink control channels in the existing LTE system are as follows:

1. Physical Downlink Control Channel (PDCCH)

The PDCCH of the LTE system is used to carry scheduling information and other control information. Control area of each downlink subframe There may be multiple PDCCHs, and the size of the control region is determined by a Physical Control Format Indicator Channel (PCFICH), which occupies 1 to 4 OFDM symbols. The transmission of one control channel occupies one Control Channel Element (CCE) or multiple consecutive CCEs, each CCE is composed of 9 Resource Element Groups (REGs), and the REGs included in the CCE of the PDCCH It is a REG that is not used to carry the PCFICH and the Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH). The PDCCH supports multiple formats to adapt to different requirements. The specific supported format is shown in Table 2 below.

Table 2: Supported PDCCH formats (supporting PDCCH format)

User equipment (UE), non-discontinuous reception (non-DRX) subframe monitoring PDCCH candidate set, that is, attempting to decode the search according to the Downlink Control Indicator format (DCI format) to be monitored. Every PDCCH in space. The search space is divided into user-specific (UE-specific) and cell-specific (Cell-specific), and the number of possible PDCCH candidates (candidates) in different search spaces is as shown in Table 3.

Table 3: PDCCH candidates monitored by a UE (one UE monitors PDCCH candidates)

Search space with aggregation level L∈{1,2,4,8}

Consisting of multiple PDCCH candidates, the CCE number corresponding to one PDCCH candidate is given by the following formula

Where m=0,...,M ^(L) -1, i=0,...,L-1,N _CCE,k is the number of CCEs used to carry the PDCCH in subframe k, and Y _k is defined as Y _k = (A·Y _k-1 ) modD, where Y _-1 =n _RNTI ≠0, A=39827, D=65537,

n _s is the number of a slot in a radio frame.

When a resource is allocated to a PDCCH, the base station needs to avoid collision between different PDCCHs. That is, when a certain CCE or a certain number of CCEs are already occupied by the PDCCH, the CCE is no longer allocated to other PDCCHs.

2. Enhanced PDCCH (EPDCCH):

In order to expand the capacity of the PDCCH, the EPDCCH is introduced in Rel-11. The EPDCCH is transmitted in a data area in a subframe, and cannot occupy the transmission space of the PDCCH. Similar to the PDCCH, the concepts of Enhanced REG (EREG) and Enhanced CCE (ECCE) are introduced. The details are as follows:

EREG resource mapping:

A PRB pair is fixed with 16 EREGs, numbered 0 to 15, which will not include the Demodulation Reference Signal Antenna Port (DMRS AP) {107,108,109,110} (normal Cyclic Prefix, normal CP) )) or the remaining REs of the DMRS AP {107, 108} (extended CP) are numbered sequentially from 0 to 15 according to the principle of the pre-frequency domain and the time domain, where all REs numbered i constitute the EREG numbered i.

ECCE resource mapping:

Centralized ECCE (Localized ECCE) to EREG resource mapping, where the nth localized ECCE resource is mapped to:

The EREG number is:

The logical PRB pair number is:

among them

Indicates the number of E-CCEs included in a PRB pair.

Represents the number of EREGs contained in an ECCE, where

Distributed ECCE (Distributed ECCE) to EREG resource mapping, where the nth distributed E-CCE resource is mapped to:

The EREG number is:

The logical PRB pair number is:

among them,

Represents the number of EREGs contained in an ECCE.

Indicates the number of ECCEs included in the PRB pair included in one EPDCCH set.

Indicates the number of ECCEs included in a PRB pair, where

The current standard has determined a set of aggregation levels supported by the EPDCCH set, which is related to factors such as the type of EPDCCH set, the type of subframe, and the number of REs available for EPDCCH transmission included in one PRB pair.

For the division of the number of EPDCCH blind detections, a protocol reservation is defined, and a table of EPDCCH candidate partitions is respectively given according to the scene.

The formula for the EPDCCH search space is defined as:

Where b=n _CI , when the carrier scheduling is performed, n _CI =0. When performing cross-carrier scheduling, n _CI is carrier indication information.

p is PRB-set, L is the aggregation level,

i=0,...,L-1

Y _p,-1 =n _RNTI ≠0, A ₀ =39827,A ₁ =39829,D=65537and

In the existing LTE system, the search space of the downlink control channel carrying the uplink scheduling information (UL grant) and the downlink scheduling information (DL grant) adopts the same design. The UL grant and its scheduled uplink data have a determined timing relationship, and the downlink data scheduled by the DL grant is transmitted in the same subframe. In order to adapt to the richer service types in the future, the length of the TTI can be changed according to the service requirements. In order to make the data transmission more flexible, it is no longer necessary to reserve the downlink control area.

However, the shortcoming of the prior art is that there is no clear solution on how to transmit the UL grant and the DL grant in the variable TTI length.

Summary of the invention

The invention provides a method and a device for transmitting and detecting uplink and downlink scheduling information, which are used to provide a scheme for transmitting a UL grant and a DL grant in a variable TTI length.

The present invention provides a method for sending uplink and downlink scheduling information, including:

Determining the DL grant and UL grant sent to the terminal;

The DL grant is sent on the first downlink control channel, and the UL grant is sent on the second downlink control channel, where the first downlink control channel and the second downlink control channel are independent of each other.

Preferably, the DL grant is sent on the first downlink control channel, including:

Transmitting, in a downlink transmission time period, a DL grant on a downlink control channel in a fixed frequency domain position in each of the basic TTIs, where the A is a positive integer greater than or equal to 1, and the basic TTI is a downlink transmission time The smallest unit on the domain.

Preferably, the length of the basic TTI is B symbols, and the B is a positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured.

Preferably, the DL grant is used to schedule the terminal to receive downlink data in A2 basic TTIs including the A basic TTIs in which the DL grant transmission is located, where A2 is greater than or equal to A.

Preferably, each of the fixed frequency domain locations includes at most one DL grant for one terminal or a group of terminals.

Preferably, the UL grant is sent on the second downlink control channel, including:

Transmitting a UL grant on a downlink control channel at a specific location in a downlink transmission time period or a specific frequency domain location on N basic TTIs, where N is a positive integer greater than or equal to 1, the specific location N symbols or N basic TTIs are N symbols starting with the first symbol in a downlink transmission time period or N basic TTIs starting from the first basic TTI; or N symbols of the specific position or The N basic TTIs are the last N symbols or N basic TTIs in one downlink transmission period.

Preferably, the specific frequency domain location is shared to all terminals or terminal specific.

Preferably, one or more downlink control regions exist on the N symbols or N basic TTIs.

Preferably, the downlink control region on the TTI includes one or more UL grants of terminals that need to transmit data.

Preferably, the UL grant is used to schedule the terminal to transmit uplink data in a predefined or pre-indicated one or more uplink transmission time periods after a downlink transmission period in which the UL grant transmission is located.

Preferably, the one or more UL grants are used to indicate allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission period.

Preferably, the next most recent uplink transmission time period is the first uplink transmission time period after the terminal correctly parses the UL grant.

Preferably, the multiple UL grants are carried by different downlink control channels, and the terminal schedules its own UL grant according to RNTI blind detection;

Alternatively, the multiple UL grants are carried by the same downlink control channel, and after receiving the UL grants carried by the downlink control channel, the terminal schedules its own UL grant according to the identifier in the UL grant.

The present invention provides a method for detecting uplink and downlink scheduling information, including:

Determining, by the first downlink control channel that is sent to the terminal DL grant, a second downlink control channel that is sent to the terminal UL grant, where the first downlink control channel and the second downlink control channel are independent of each other;

The DL grant is detected on the first downlink control channel, and the UL grant is detected on the second downlink control channel.

Preferably, detecting the DL grant on the first downlink control channel includes:

Detecting a DL grant on a downlink control channel in a fixed frequency domain position in each of the basic TTIs in a downlink transmission time period, where the A is a positive integer greater than or equal to 1, and the basic TTI is a downlink transmission time The smallest unit on the domain.

Preferably, detecting the UL grant on the second downlink control channel includes:

Detecting a UL grant on a downlink control channel at a specific location in a downlink transmission time period or a specific frequency domain location on N basic TTIs, where N is a positive integer greater than or equal to 1, the specific location N symbols or N basic TTIs are N symbols starting with the first symbol in a downlink transmission time period or N basic TTIs starting from the first basic TTI; or N symbols of the specific position or The N basic TTIs are the last N symbols or N basic TTIs in one downlink transmission period.

The present invention provides an apparatus for transmitting uplink and downlink scheduling information, including:

a scheduling information determining module, configured to determine a DL grant and a UL grant sent to the terminal;

The scheduling information sending module is configured to send a DL grant on the first downlink control channel, and send a UL grant on the second downlink control channel, where the first downlink control channel and the second downlink control channel are independent of each other.

Preferably, the scheduling information sending module is further configured to: when the first downlink control channel sends the DL grant, send the DL grant on the downlink control channel in the fixed frequency domain position in each of the basic TTIs in the downlink transmission time period, The A is a positive integer greater than or equal to 1, and the basic TTI is a minimum unit of downlink transmission in the time domain.

Preferably, the scheduling information sending module is further configured to use the basic TTI of length B symbols, the B A positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured.

Preferably, the scheduling information sending module is further configured to send the DL grant for scheduling downlink data to be received by the terminal in the A2 basic TTIs of the A basic TTIs in which the DL grant transmission is located, where A2 is greater than Or equal to A.

Preferably, the scheduling information sending module is further configured to include at most one DL grant for one terminal or a group of terminals in each of the fixed frequency domain locations.

Preferably, the scheduling information sending module is further configured to: when the second downlink control channel sends the UL grant, downlink control at a specific position in the downlink transmission time period or in a specific frequency domain position on the N basic TTIs Transmitting a UL grant on the channel, where N is a positive integer greater than or equal to 1, and the N symbols or the N basic TTIs of the specific location are N symbols or the first symbol starting from the first symbol in a downlink transmission time period. N basic TTIs starting from one basic TTI; or N symbols or N basic TTIs of the specific location are the last N symbols or N basic TTIs in one downlink transmission period.

Preferably, the scheduling information sending module is further configured to use the specific frequency domain location that is shared for all terminals or that is specific to the terminal.

Preferably, the scheduling information sending module is further configured to adopt the N symbols or N basic TTIs in which one or more downlink control regions exist.

Preferably, the scheduling information sending module is further configured to adopt a downlink control region on the TTI that includes a UL grant of one or more terminals that need to transmit data.

Preferably, the scheduling information sending module is further configured to send, by the terminal, the uplink data in a preset or pre-indicated one or more uplink transmission time periods after the downlink transmission time period in which the UL grant transmission is located. Said UL grant.

Preferably, the scheduling information sending module is further configured to send the one or more UL grants for indicating allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission period.

Preferably, the scheduling information sending module is further configured to use the multiple UL grants carried by different downlink control channels, and the terminal schedules its own UL grant according to the RNTI blind check; or adopts the bearer carried by the same downlink control channel. After receiving all the UL grants carried by the downlink control channel, the terminal allocates its own UL grant according to the identifier in the UL grant.

The present invention provides an apparatus for detecting uplink and downlink scheduling information, including:

a channel determining module, configured to determine a first downlink control channel that is sent to the terminal DL grant and a second downlink control channel that is sent to the terminal UL grant, where the first downlink control channel and the second downlink control channel are independent of each other;

And a detecting module, configured to detect a DL grant on the first downlink control channel, and detect a UL grant on the second downlink control channel.

Preferably, the detecting module is further configured to detect, when the first downlink control channel detects the DL grant, the DL grant on the downlink control channel in the fixed frequency domain position in each of the basic TTIs in the downlink transmission time period, where The A For a positive integer greater than or equal to 1, the basic TTI is the smallest unit of downlink transmission in the time domain.

Preferably, the detecting module is further configured to detect the basic TTI of length B symbols, the B being a positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured.

Preferably, the detecting module is further configured to detect the DL grant for scheduling the terminal to receive downlink data in the A2 basic TTIs including the A basic TTIs in which the DL grant transmission is located, where A2 is greater than or equal to A.

Preferably, the detecting module is further configured to detect each of the fixed frequency domain locations including at most one DL grant for a terminal or a group of terminals.

Preferably, the detecting module is further configured to: when the second downlink control channel detects the UL grant, on a downlink control channel at a specific position in a downlink transmission time period or a specific frequency domain position on the N basic TTIs Detecting a UL grant, where N is a positive integer greater than or equal to 1, and the N symbols or N basic TTIs of the specific location are N symbols or the first of the first symbol in a downlink transmission time period The N basic TTIs at which the basic TTI starts; or, the N symbols or the N basic TTIs of the specific location are the last N symbols or N basic TTIs in one downlink transmission period.

Preferably, the detecting module is further configured to detect the specific frequency domain location that is shared or exclusive to the terminal for all terminals.

Preferably, the detecting module is further configured to detect the N symbols or N basic TTIs in which one or more downlink control regions exist.

Preferably, the detecting module is further configured to detect a downlink control region on the TTI of the UL grant including one or more terminals that need to transmit data.

Preferably, the detecting module is further configured to detect, in the scheduling, the uplink data transmission period in the one or more uplink transmission time periods that are predefined or pre-indicated after the downlink transmission time period in which the UL grant transmission is located. Said UL grant.

Preferably, the detecting module is further configured to detect the one or more UL grants for indicating allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission period.

Preferably, the detecting module is further configured to detect the multiple UL grants carried by different downlink control channels, and the terminal schedules its own UL grant according to the RNTI blind check; or detects the multiple bearers carried by the same downlink control channel. After receiving all UL grants carried by the downlink control channel, the terminal grants its own UL grant according to the identifier in the UL grant.

The beneficial effects of the present invention are as follows:

In the technical solution provided by the embodiment of the present invention, when the uplink and downlink scheduling information is sent, the DL grant is sent on the first downlink control channel, and the UL grant is sent on the second downlink control channel; when the uplink and downlink scheduling information is detected, The first downlink control channel detects the DL grant, and the second downlink control channel detects the UL grant; and the first downlink control channel and the second downlink control channel are independent of each other, that is, the search spaces of the UL grant and the DL grant are independently defined, Terminal at Different resource locations receive UL grants and DL grants. Therefore, it is possible to more flexibly schedule time-frequency resources, support shorter TTI lengths, and various service types.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic structural view of a Frame structure type 1 in the background art;

2 is a schematic structural diagram of a Frame structure type 2 (for 5ms switch-point periodicity) in the background art;

3 is a schematic diagram of a Downlink resource grid in the background art;

4 is a schematic flowchart of implementing an uplink and downlink scheduling information sending method according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of an implementation process of detecting uplink and downlink scheduling information according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of UL grant and DL grant independent transmission in Embodiment 1 according to an embodiment of the present invention;

7 is a schematic diagram of UL grant and DL grant independent transmission in Embodiment 2 according to an embodiment of the present invention;

8 is a schematic diagram of UL grant independent transmission in Embodiment 2 according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an apparatus for transmitting uplink and downlink scheduling information according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an apparatus for detecting uplink and downlink scheduling information according to an embodiment of the present invention;

11 is a schematic structural diagram of a base station according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be understood that the technical solution of the present invention can be applied to various communication systems, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division. Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) System, Universal Mobile Telecommunication System (UMTS), etc.

It should be understood that, in the embodiment of the present invention, a user equipment (User Equipment, UE) includes but is not limited to a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile telephone (Mobile Telephone), The user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or called a mobile device). For "cellular" phones, computers with wireless communication capabilities, etc., the user devices can also be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices.

In an embodiment of the invention, a base station (e.g., an access point) may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.

With the development of mobile technology, future mobile communication systems need to provide lower network delay and support a wider variety of services. The uplink TTI and the downlink TTI need to be dynamically changed according to the service type and the load. The timing relationship between the UL grant and the uplink data transmission channel may be different from the timing relationship of the LTE system. The DL grant also needs to support more flexible resource scheduling. However, there is no clear solution for how the UL grant and DL grant search spaces are designed. Based on this, an embodiment of the present invention provides a scheme for transmitting a UL grant and a DL grant in a variable TTI length, and defines a UL grant and a DL grant independent transmission for a variable resource region size within a variable TTI. Specifically, the downlink control channel carrying the DL grant is detected in a fixed frequency domain position in each of the basic TTIs in the downlink transmission time period, and A is a positive integer greater than or equal to 1. The downlink control channel carrying the UL grant is detected in N symbols at a specific position in the downlink transmission time period or a specific frequency domain position on the N basic TTIs, and N is a positive integer greater than or equal to 1.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

In the description process, the implementation from the terminal and the base station side will be respectively explained, wherein the base station side will explain the process of transmitting the UL grant and the DL grant, and the terminal side will explain the process of detecting the UL grant and the DL grant, and then will also give two. The examples are implemented in order to better understand the implementation of the solutions presented in the embodiments of the present invention. Such a description does not mean that the two must be implemented together or must be implemented separately. In fact, when the terminal is separately implemented from the base station, it also solves the problems on the terminal side and the base station side, and when the two are combined, Get better technical results.

FIG. 4 is a schematic flowchart of a method for transmitting uplink and downlink scheduling information, as shown in the figure, which may include:

Step 401: Determine a DL grant and a UL grant that are sent to the terminal.

Step 402: Send a DL grant on the first downlink control channel, and send a UL grant on the second downlink control channel, where the first downlink control channel and the second downlink control channel are independent of each other.

In the implementation, sending the DL grant on the first downlink control channel may include:

Transmitting, in a downlink transmission time period, a DL grant on a downlink control channel in a fixed frequency domain position in each of the basic TTIs, where the A is a positive integer greater than or equal to 1, and the basic TTI is a downlink transmission time Most on the domain Small unit.

In an implementation, the length of the basic TTI is B symbols, and the B is a positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured.

In an implementation, the DL grant is used to schedule the terminal to receive downlink data in A2 basic TTIs including the A basic TTIs in which the DL grant transmission is located, where A2 is greater than or equal to A.

In an implementation, each of the fixed frequency domain locations includes at most one DL grant for one terminal or a group of terminals.

In the implementation, the UL grant is sent on the second downlink control channel, including:

In implementation, the specific frequency domain location is shared to all terminals or terminal specific.

In implementation, one or more downlink control regions exist on the N symbols or N basic TTIs.

In implementation, the downlink control region on the TTI includes one or more UL grants of terminals that need to transmit data.

In an implementation, the UL grant is used to schedule the terminal to transmit uplink data in a predefined or pre-indicated one or more uplink transmission time periods after a downlink transmission period in which the UL grant transmission is located.

In an implementation, the one or more UL grants are used to indicate allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission period.

In the implementation, the next most recent uplink transmission time period is the first uplink transmission time period after the terminal correctly parses the UL grant.

In an implementation, the one or more UL grants are carried by different downlink control channels, and the terminal schedules its own UL grant according to RNTI blind detection;

Alternatively, the one or more UL grants are carried by the same downlink control channel, and after receiving the UL grants carried by the downlink control channel, the terminal schedules its own UL grant according to the identifier in the UL grant.

FIG. 5 is a schematic flowchart of an implementation process of a method for detecting uplink and downlink scheduling information, as shown in the figure, which may include:

Step 501: Determine a first downlink control channel that is sent to the terminal DL grant and a second downlink control channel that is sent to the terminal UL grant, where the first downlink control channel and the second downlink control channel are independent of each other;

Step 502: Detect a DL grant on the first downlink control channel, and detect a UL grant on the second downlink control channel.

In the implementation, detecting the DL grant on the first downlink control channel includes:

Detecting a DL grant on a downlink control channel in a fixed frequency domain position in each of the basic TTIs in a downlink transmission time period, where the A is a positive integer greater than or equal to 1, and the basic TTI is a downlink transmission time Most on the domain Small unit.

In the implementation, the UL grant is detected on the second downlink control channel, including:

The implementation of transmission and detection will be described below by way of example.

Example 1:

6 is a schematic diagram of UL grant and DL grant independent transmission in Embodiment 1, as shown in the figure, in this embodiment, it is assumed that the length of the basic TTI is M OFDM symbols, and M is a positive integer greater than or equal to 1, for example, M= 1. The downlink transmission time period includes six downlink TTIs, and a downlink control region exists at a fixed position of each basic downlink TTI, for example, at a start position of each resource unit, and the downlink control region may include multiple resource units.

The DL grant in the downlink control region may indicate resource allocation of one or a group of UEs. The resource can be packaged Containing one or more basic TTIs, one or more resource elements may be included in the frequency domain. When the resource of the transmission data scheduled by the DL grant covers the reserved downlink control area, the resources occupied by the downlink control area are used to transmit downlink data.

The uplink transmission time period includes four TTIs, and the resources for transmitting uplink data occupied by each terminal in the uplink transmission time period are allocated by the UL grant in the downlink control region on the first N TTIs in the downlink transmission time period, where N is A positive integer greater than or equal to 1, such as N=1. It is assumed that three terminals are scheduled for uplink data transmission during the uplink transmission period. Then, the three terminals receive the UL grant in the downlink control region at the specific TTI specific location in the downlink transmission time period.

The terminal may blindly check its own UL grant in the downlink control area according to the Radio Network Temporary Identity (RNTI), or obtain its own uplink scheduling information (for example, UE ID) according to the identifier carried by the UL grant.

There is a guard period consisting of Z TTIs between the uplink transmission time period and the downlink transmission time period, and Z is a positive integer greater than or equal to 1, for example, Z=1.

Example 2:

7 is a schematic diagram of UL grant and DL grant independent transmission in Embodiment 2. As shown in the figure, in this embodiment, it is assumed that the length of the basic TTI is M OFDM symbols, and M is a positive integer greater than or equal to 1, for example, M= 1. The downlink transmission time period includes six downlink TTIs, and a downlink control region exists at a fixed position of each downlink TTI, for example, at a start position of each resource unit, and the downlink control region may include multiple resource units.

The DL grant in the downlink control region may indicate resource allocation of one or a group of UEs. The resource may include one or more TTIs, and may include one or more resource elements in the frequency domain. When the resource of the transmission data scheduled by the DL grant covers the reserved downlink control area, the resources occupied by the downlink control area are used to transmit downlink data.

The uplink transmission time period includes four basic TTIs, and the resources for transmitting uplink data occupied by each terminal in the uplink transmission time period are allocated by the UL grant in the downlink control region on the last N basic TTIs in the downlink transmission time period. N is a positive integer greater than or equal to 1, for example, N=1. It is assumed that three terminals are scheduled for uplink data transmission during the uplink transmission period. Then, the three terminals receive the UL grant in the downlink control region at the first basic TTI specific location in the downlink transmission time period.

The terminal may blindly check its own UL grant according to the RNTI, or obtain its own uplink scheduling information (for example, UE ID) according to the identifier carried by the UL grant.

There is a guard period of Z TTIs between the uplink transmission period and the downlink transmission period. Z is a positive integer greater than or equal to 1 and needs to ensure that the UL grant information is parsed within the guard period within the terminal. For example, Z=2.

Alternatively, it can be implemented as follows:

FIG. 8 is a schematic diagram of the UL grant independent transmission in the second embodiment. As shown in the figure, the downlink control region carrying the UL grant transmits the UL grant on the last N TTIs in the downlink transmission time period, and schedules the second uplink transmission time period. Resource allocation within.

Based on the same inventive concept, the embodiment of the present invention further provides an apparatus for transmitting uplink and downlink scheduling information, and a device for detecting uplink and downlink scheduling information, and the principle of solving the problem by these devices and a method for transmitting uplink and downlink scheduling information The detection method of the uplink and downlink scheduling information is similar, so the implementation of these devices can refer to the implementation of the method, and the repeated description is not repeated.

FIG. 9 is a schematic structural diagram of an apparatus for transmitting uplink and downlink scheduling information, as shown in the figure, which may include:

The scheduling information determining module 901 is configured to determine a DL grant and a UL grant sent to the terminal;

The scheduling information sending module 902 is configured to send a DL grant on the first downlink control channel and a UL grant in the second downlink control channel, where the first downlink control channel and the second downlink control channel are independent of each other.

In the implementation, the scheduling information sending module is further configured to: when the first downlink control channel sends the DL grant, send the DL grant on the downlink control channel in the fixed frequency domain position in each of the basic basic TTIs in the downlink transmission time period, where The A is a positive integer greater than or equal to 1, and the basic TTI is a minimum unit of downlink transmission in the time domain.

In an implementation, the scheduling information sending module is further configured to use the basic TTI with a length of B symbols, the B being a positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured.

In the implementation, the scheduling information sending module is further configured to send the DL grant for scheduling downlink data to be received by the terminal in the A2 basic TTIs, where the basic PDCCHs are transmitted by the DL grant, where A2 is greater than or Equal to A.

In an implementation, the scheduling information sending module is further configured to include at most one DL grant for one terminal or a group of terminals in each fixed frequency domain location.

In an implementation, the scheduling information sending module is further configured to: when the second downlink control channel sends the UL grant, the downlink control channel at a specific position in the downlink transmission time period or the specific frequency domain position on the N basic TTIs Sending a UL grant, where N is a positive integer greater than or equal to 1, and the N symbols or N basic TTIs of the specific location are N symbols or the first of the first symbol in a downlink transmission time period. N basic TTIs starting from a basic TTI; or N symbols or N basic TTIs of the specific location are the last N symbols or N basic TTIs in one downlink transmission period.

In implementation, the scheduling information sending module is further configured to use the specific frequency domain location that is shared for all terminals or that is specific to the terminal.

In implementation, the scheduling information sending module is further configured to adopt the N symbols or N basic TTIs in which one or more downlink control regions exist.

In an implementation, the scheduling information sending module is further configured to adopt a downlink control region on the TTI that includes a UL grant of one or more terminals that need to transmit data.

In an implementation, the scheduling information sending module is further configured to send, by the terminal, the uplink data that is scheduled to be transmitted by the terminal in a preset or pre-indicated one or more uplink transmission time periods after the downlink transmission time period in which the UL grant transmission is located. The UL grant.

In an implementation, the scheduling information sending module is further configured to send the one or more UL grants for indicating allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission period.

In an implementation, the scheduling information sending module is further configured to use the one or more UL grants carried by different downlink control channels, and the terminal schedules its own UL grant according to the RNTI blind check; or, is carried by the same downlink control channel. The one or more UL grants, after receiving all the UL grants carried by the downlink control channel, and scheduling their own UL grants according to the identifiers in the UL grants.

FIG. 10 is a schematic structural diagram of an apparatus for detecting uplink and downlink scheduling information, as shown in the figure, which may include:

The channel determining module 1001 is configured to determine a first downlink control channel that is sent to the terminal DL grant and a second downlink control channel that is sent to the terminal UL grant, where the first downlink control channel and the second downlink control channel are independent of each other;

The detecting module 1002 is configured to detect a DL grant on the first downlink control channel and a UL grant on the second downlink control channel.

In an implementation, the detecting module is further configured to: when the first downlink control channel detects the DL grant, detect a DL grant on a downlink control channel in a fixed frequency domain position in each of the basic TTIs in a downlink transmission time period, where A is a positive integer greater than or equal to 1, and the basic TTI is the smallest unit of downlink transmission in the time domain.

In an implementation, the detecting module is further configured to detect the basic TTI with a length of B symbols, the B being a positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured.

In an implementation, the detecting module is further configured to detect, by the terminal, the DL grant for receiving downlink data in the A2 basic TTIs, where the terminal is in the A basic TTI where the DL grant is transmitted, where A2 is greater than or equal to A. .

In an implementation, the detection module is further configured to detect each of the fixed frequency domain locations including at most one DL grant for a terminal or a group of terminals.

In an implementation, the detecting module is further configured to: when the second downlink control channel detects the UL grant, detect on a downlink control channel at a specific position in a downlink transmission time period or a specific frequency domain position on the N basic TTIs UL grant, where N is a positive integer greater than or equal to 1, and the N symbols or N basic TTIs of the specific location are N symbols or the first basic starting from the first symbol in a downlink transmission time period N basic TTIs starting from the TTI; or N symbols or N basic TTIs of the specific location are the last N symbols or N basic TTIs in one downlink transmission period.

In implementation, the detection module is further configured to detect the specific frequency domain location that is shared to all terminals or that is specific to the terminal.

In an implementation, the detecting module is further configured to detect the N symbols or N basic TTIs in which one or more downlink control regions exist.

In an implementation, the detecting module is further configured to detect a downlink control region on the TTI of the UL grant that includes one or more terminals that need to transmit data.

In an implementation, the detecting module is further configured to: detect, by the terminal, the uplink data that is transmitted by the terminal in a predefined or pre-indicated one or more uplink transmission time periods after a downlink transmission time period in which the UL grant transmission is located. UL grant.

In an implementation, the detecting module is further configured to detect the one or more UL grants for indicating allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission time period.

In an implementation, the detecting module is further configured to detect the one or more UL grants carried by different downlink control channels, and the terminal schedules its own UL grant according to the RNTI blind check; or detects the bearer carried by the same downlink control channel. After receiving all the UL grants carried by the downlink control channel, the terminal allocates its own UL grant according to the identifier in the UL grant.

For convenience of description, the various parts of the above described devices are described in terms of functions divided into various modules or units. Of course, the functions of the various modules or units may be implemented in one or more software or hardware in the practice of the invention.

When the technical solution provided by the embodiment of the present invention is implemented, it can be implemented as follows.

11 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:

The processor 1100 is configured to read a program in the memory 1120 and perform the following process:

Determining the DL grant and UL grant sent to the terminal;

The transceiver 1110 is configured to send data under the control of the processor 1100, and performs the following process:

In an implementation, when the first downlink control channel sends a DL grant, the transceiver 1110 is configured to:

In an implementation, when the second downlink control channel sends the UL grant, the transceiver 1110 is configured to:

Transmitting a UL grant on a downlink control channel at a specific location in a downlink transmission time period or a specific frequency domain location on N basic TTIs, where N is a positive integer greater than or equal to 1, the specific location N symbols or N basic TTIs are N symbols or symbols starting from the first symbol in a downlink transmission time period N basic TTIs starting from one basic TTI; or N symbols or N basic TTIs of the specific location are the last N symbols or N basic TTIs in one downlink transmission period.

Wherein, in FIG. 11, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver 1110 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in performing operations.

12 is a schematic structural diagram of a terminal. As shown in the figure, the terminal includes:

The processor 1200 is configured to read a program in the memory 1220 and perform the following process:

The transceiver 1210 is configured to send data under the control of the processor 1200, and performs the following processes:

In an implementation, when the first downlink control channel detects the DL grant, the transceiver 1210 is configured to:

In implementation, when the second downlink control channel detects the UL grant, the transceiver 1210 is configured to:

In FIG. 12, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1200 and various circuits of memory represented by memory 1220. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 1210 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 1230 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1200 is responsible for managing the bus architecture and the usual processing, and the memory 1220 can store the processor 1200 at The data used to perform the operation.

In summary, in the technical solution provided by the embodiment of the present invention, the search spaces of the UL grant and the DL grant are independently defined, and the terminal receives the UL grant and the DL grant at different resource locations. This scheme can more flexibly schedule time-frequency resources, support shorter TTI lengths, and various service types.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

A method for transmitting an uplink and downlink scheduling information grant, comprising:

Determining downlink scheduling information DL grant and uplink scheduling information UL grant sent to the terminal;

The DL grant is sent on the first downlink control channel, and the UL grant is sent on the second downlink control channel, where the first downlink control channel and the second downlink control channel are independent of each other.
The method of claim 1, wherein the transmitting the DL grant on the first downlink control channel comprises:

Transmitting, in the downlink transmission time period, a DL grant on a downlink control channel in a fixed frequency domain position in each of the basic transmission time intervals TTI, where the A is a positive integer greater than or equal to 1, and the basic TTI is a downlink The smallest unit of transmission in the time domain.
The method according to claim 2, wherein the basic TTI has a length of B symbols, and the B is a positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured of.
The method according to claim 2, wherein the DL grant is used to schedule the terminal to receive downlink data in A2 basic TTIs including A basic TTIs in which the DL grant transmission is located, where A2 is greater than Or equal to A.
The method of claim 2 wherein said each fixed frequency domain location comprises at most one DL grant for a terminal or a group of terminals.
The method of claim 1, wherein the transmitting the UL grant on the second downlink control channel comprises:

Transmitting a UL grant on a downlink control channel at a specific location in a downlink transmission time period or a specific frequency domain location on N basic TTIs, where N is a positive integer greater than or equal to 1, the specific location N symbols or N basic TTIs are N symbols starting with the first symbol in a downlink transmission time period or N basic TTIs starting from the first basic TTI; or N symbols of the specific position or The N basic TTIs are the last N symbols or N basic TTIs in one downlink transmission period.
The method of claim 6 wherein said particular frequency domain location is shared or terminal specific to all terminals.
The method of claim 6 wherein one or more downlink control regions are present on said N symbols or N basic TTIs.
The method of claim 8, wherein the downlink control region on the TTI comprises one or more UL grants of terminals that need to transmit data.
The method according to claim 8, wherein the UL grant is used to schedule a predefined or pre-indicated one or more uplink transmission times of the terminal after a downlink transmission period in which the UL grant transmission is located. The uplink data is transmitted in the segment.
The method according to claim 8, wherein the one or more UL grants are used to indicate allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission period.
The method of claim 11 wherein said next most recent uplink transmission time period is final The first uplink transmission time period after the UL grant is correctly parsed.
The method according to claim 11, wherein the one or more UL grants are carried by different downlink control channels, and the terminal schedules its own UL grant according to the radio network temporary identification RNTI blind check;

Alternatively, the one or more UL grants are carried by the same downlink control channel, and after receiving the UL grants carried by the downlink control channel, the terminal schedules its own UL grant according to the identifier in the UL grant.
A method for detecting uplink and downlink scheduling information, comprising:

Determining, by the first downlink control channel that is sent to the terminal DL grant, a second downlink control channel that is sent to the terminal UL grant, where the first downlink control channel and the second downlink control channel are independent of each other;

The DL grant is detected on the first downlink control channel, and the UL grant is detected on the second downlink control channel.
The method of claim 14, wherein detecting the DL grant on the first downlink control channel comprises:

Detecting a DL grant on a downlink control channel in a fixed frequency domain position in each of the basic TTIs in a downlink transmission time period, where the A is a positive integer greater than or equal to 1, and the basic TTI is a downlink transmission time The smallest unit on the domain.
The method according to claim 15, wherein the basic TTI has a length of B symbols, and the B is a positive integer greater than or equal to 1; the length of the basic TTI is predefined or pre-configured of.
The method according to claim 15, wherein the DL grant is used to schedule the terminal to receive downlink data in A2 basic TTIs including A basic TTIs in which the DL grant transmission is located, where A2 is greater than Or equal to A.
The method of claim 15 wherein said each fixed frequency domain location comprises at most one DL grant for a terminal or a group of terminals.
The method of claim 14, wherein detecting the UL grant on the second downlink control channel comprises:

Detecting a UL grant on a downlink control channel at a specific location in a downlink transmission time period or a specific frequency domain location on N basic TTIs, where N is a positive integer greater than or equal to 1, the specific location N symbols or N basic TTIs are N symbols starting with the first symbol in a downlink transmission time period or N basic TTIs starting from the first basic TTI; or N symbols of the specific position or The N basic TTIs are the last N symbols or N basic TTIs in one downlink transmission period.
The method of claim 19 wherein said particular frequency domain location is shared or terminal specific to all terminals.
The method of claim 19, wherein one or more downlink control regions are present on the N symbols or N basic TTIs.
The method of claim 21 wherein the downlink control region on the TTI comprises one or The UL grant of multiple terminals that need to transmit data.
The method according to claim 21, wherein the UL grant is used to schedule one or more uplink transmission times of the terminal that are predefined or previously indicated after the downlink transmission time period in which the UL grant transmission is located. The uplink data is transmitted in the segment.
The method according to claim 21, wherein the one or more UL grants are used to indicate allocation of uplink transmission resources of one or more terminals in a next most recent uplink transmission period.
The method of claim 24, wherein the next most recent uplink transmission time period is a first uplink transmission time period after the terminal correctly parses the UL grant.
The method according to claim 24, wherein the one or more UL grants are carried by different downlink control channels, and the terminal schedules its own UL grant according to RNTI blind detection;

Alternatively, the one or more UL grants are carried by the same downlink control channel, and after receiving the UL grants carried by the downlink control channel, the terminal schedules its own UL grant according to the identifier in the UL grant.
A device for transmitting uplink and downlink scheduling information, comprising:

a scheduling information determining module, configured to determine a DL grant and a UL grant sent to the terminal;

The scheduling information sending module is configured to send a DL grant on the first downlink control channel, and send a UL grant on the second downlink control channel, where the first downlink control channel and the second downlink control channel are independent of each other.
The apparatus according to claim 27, wherein the scheduling information sending module is further configured to: when the first downlink control channel transmits the DL grant, in a fixed frequency domain position in each of the basic TTIs in the downlink transmission time period The DL grant is sent on the downlink control channel, where A is a positive integer greater than or equal to 1, and the basic TTI is a minimum unit of downlink transmission in the time domain.
The apparatus according to claim 28, wherein the scheduling information transmitting module is further configured to use the basic TTI having a length of B symbols, the B being a positive integer greater than or equal to 1; a length of the basic TTI It is pre-defined or pre-configured.
The apparatus according to claim 28, wherein the scheduling information sending module is further configured to send the downlink data for scheduling the terminal to receive the A2 basic TTIs including the A basic TTIs in which the DL grant transmission is located. The DL grant, where A2 is greater than or equal to A.
The apparatus according to claim 28, wherein the scheduling information transmitting module is further configured to include at most one DL grant for one terminal or a group of terminals in each of the fixed frequency domain locations.
The apparatus according to claim 27, wherein the scheduling information sending module is further configured to: when the second downlink control channel transmits the UL grant, on the N symbols or N basic TTIs of the specific location in the downlink transmission time period Transmitting a UL grant on a downlink control channel at a specific frequency domain location, where N is a positive integer greater than or equal to 1, and N symbols or N basic TTIs of the specific location are the first in a downlink transmission time period N symbols starting with a symbol or N basic TTIs starting with the first basic TTI; or N symbols or N bases of the specific position The TTI is the last N symbols or N basic TTIs in a downlink transmission time period.
The apparatus according to claim 32, wherein the scheduling information transmitting module is further configured to use the specific frequency domain location that is shared for all terminals or that is specific to the terminal.
The apparatus according to claim 32, wherein the scheduling information transmitting module is further configured to adopt the N symbols or N basic TTIs in which one or more downlink control regions exist.
The apparatus according to claim 34, wherein the scheduling information transmitting module is further configured to adopt a downlink control region on the TTI that includes a UL grant of one or more terminals that need to transmit data.
The apparatus according to claim 34, wherein the scheduling information sending module is further configured to send one or more pre-defined or pre-instructed for scheduling the terminal after the downlink transmission time period in which the UL grant transmission is located The UL grant that transmits uplink data in an uplink transmission period.
The apparatus according to claim 34, wherein the scheduling information transmitting module is further configured to send the one of the uplink transmission resources for indicating one or more terminals in the next most recent uplink transmission period or Multiple UL grants.
The apparatus according to claim 37, wherein the scheduling information sending module is further configured to use the first uplink transmission time period after the terminal correctly parses the UL grant as the next most recent uplink transmission time period.
The apparatus according to claim 37, wherein the scheduling information sending module is further configured to use the one or more UL grants carried by different downlink control channels, and the terminal schedules its own UL grant according to the RNTI blind check; or The one or more UL grants carried by the same downlink control channel are used to receive the UL grants according to the identifiers in the UL grants after the terminal receives all the UL grants carried by the downlink control channel.
A device for detecting uplink and downlink scheduling information, comprising:

a channel determining module, configured to determine a first downlink control channel that is sent to the terminal DL grant and a second downlink control channel that is sent to the terminal UL grant, where the first downlink control channel and the second downlink control channel are independent of each other;

And a detecting module, configured to detect a DL grant on the first downlink control channel, and detect a UL grant on the second downlink control channel.
The apparatus according to claim 40, wherein the detecting module is further configured to: when the first downlink control channel detects the DL grant, downlink in a fixed frequency domain position in each of the basic TTIs in the downlink transmission time period A DL grant is detected on the control channel, where A is a positive integer greater than or equal to 1, and the basic TTI is a minimum unit of downlink transmission in the time domain.
The apparatus according to claim 41, wherein the detecting module is further configured to detect the basic TTI of length B symbols, the B being a positive integer greater than or equal to 1; the length of the basic TTI is Defined or pre-configured.
The apparatus according to claim 41, wherein the detecting module is further configured to detect, in the A2 basic TTIs, which are used by the terminal to schedule the A basic TTIs in which the DL grant is transmitted, to receive downlink data. DL grant, where A2 is greater than or equal to A.
The apparatus of claim 41 wherein the detecting module is further for detecting each of said fixed frequency domain locations comprising at most one DL grant for a terminal or a group of terminals.
The apparatus according to claim 40, wherein the detecting module is further configured to: when the second downlink control channel detects the UL grant, the N symbols at a specific position in the downlink transmission time period or the specificity on the N basic TTIs Detecting a UL grant on a downlink control channel in a frequency domain location, where N is a positive integer greater than or equal to 1, and N symbols or N basic TTIs of the specific location are the first symbol in a downlink transmission time period N initial symbols or N basic TTIs starting with the first basic TTI; or N symbols or N basic TTIs of the specific location are the last N symbols or N basic TTIs in one downlink transmission period .
The apparatus of claim 45, wherein the detecting module is further configured to detect the particular frequency domain location that is shared or exclusive to the terminal for all terminals.
The apparatus of claim 45, wherein the detecting module is further configured to detect the N symbols or N basic TTIs in which one or more downlink control regions are present.
The apparatus according to claim 47, wherein the detecting module is further configured to detect a downlink control region on the TTI of the UL grant including one or more terminals that need to transmit data.
The apparatus according to claim 47, wherein the detecting module is further configured to detect one or more uplinks for pre-defined or pre-indicated for scheduling the terminal after the downlink transmission time period in which the UL grant transmission is located The UL grant that transmits uplink data in a transmission time period.
The apparatus according to claim 47, wherein the detecting module is further configured to detect the one or more of the allocation of uplink transmission resources for indicating one or more terminals in the next most recent uplink transmission period UL grant.
The apparatus according to claim 50, wherein the detecting module is further configured to detect the next most recent uplink transmission time period of the first uplink transmission time period after the terminal correctly parses the UL grant.
The apparatus according to claim 50, wherein the detecting module is further configured to detect the one or more UL grants carried by different downlink control channels, and the terminal schedules its own UL grant according to RNTI blind detection; or, detects The one or more UL grants carried by the same downlink control channel, after the terminal receives all the UL grants carried by the downlink control channel, schedules its own UL grant according to the identifier in the UL grant.