WO2007108097A1 - 移動局、固定局及び無線通信システム - Google Patents
移動局、固定局及び無線通信システム Download PDFInfo
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- WO2007108097A1 WO2007108097A1 PCT/JP2006/305572 JP2006305572W WO2007108097A1 WO 2007108097 A1 WO2007108097 A1 WO 2007108097A1 JP 2006305572 W JP2006305572 W JP 2006305572W WO 2007108097 A1 WO2007108097 A1 WO 2007108097A1
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- transmission
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- power control
- transmission power
- packet
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- 238000004891 communication Methods 0.000 title claims description 71
- 230000005540 biological transmission Effects 0.000 claims abstract description 609
- 238000012545 processing Methods 0.000 claims abstract description 103
- 238000012544 monitoring process Methods 0.000 claims abstract description 55
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- 230000008569 process Effects 0.000 description 14
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- 230000007704 transition Effects 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000011664 signaling Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 3
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 3
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- 230000014509 gene expression Effects 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
Definitions
- the present invention relates to a radio communication system including a mobile station such as a mobile phone and a fixed station (base station, base station control device), and in particular, a mobile in which a channel for transmitting packet data is set.
- the present invention relates to a radio communication system including a station and a fixed station.
- discontinuous / packet-switched data communication services such as Internet services have increased.
- the additional specification in Release 5 corresponds to the downlink packet data transmitted from the base station to the mobile station. It is called HSDPA (High Speed Downlink Packet Access), and a packet transmission channel dedicated to HSDPA is added. .
- HSDPA High Speed Downlink Packet Access
- the additional specification in Release 6 corresponds to the uplink packet data transmitted from the mobile station to the base station, which is called E—DCH (Enhanced—Uplink Dedicated CHannel), and is used for E—DCH dedicated packet transmission. A credit channel has been added.
- E—DCH Enhanced—Uplink Dedicated CHannel
- a physical channel is defined corresponding to a data transmission channel (DCH: Dedi cated CHannel) in an upper protocol layer.
- DCH Data transmission channel
- a mobile station transmits a data transmission physical channel (DPDCH: Dedicated Physical Data CHannel) that is transmitted at an arbitrary timing and always needs to be received on the base station side. It also defines a dedicated control channel (DPCCH) for transmitting physical layer control information such as pilot signals for maintaining radio links and DPDCH control information.
- DPDCH data transmission physical channel
- DPCCH dedicated control channel
- DPCCH can be used even if a packet is not transmitted for a long time in the uplink (or downlink) in order to perform closed-loop transmission power control. Must be sent.
- the mobile station When HSDPA is set, the mobile station continuously transmits "downlink quality information (CQI)" on the uplink for transmission control (scheduling) in the fixed station. Yes.
- CQI downlink quality information
- Packets for data transmission have the characteristic of being transmitted and received in bursts. Therefore, if there are many mobile stations that do not transmit or receive data, uplink radio resources are reduced by constant DPCCH transmission from the mobile stations and periodic CQI. Consume.
- Non-Patent Document 1 describes various methods for reducing the consumption of uplink radio resources due to uplink DPCCH transmission and CQI transmission when performing communication settings using only the extended channel for packets. Report as TR25. 903.
- Non-Patent Document 1 discloses the following technique.
- Patent Documents 1 and 2 below disclose a method of reducing radio resource consumption by CQI transmission.
- Patent Document 1 when the mobile station sets an uplink quality control channel, transmission start and stop control of quality information is performed.
- Patent Document 2 the feedback frequency of downlink quality information (CQ) transmission from a mobile station is switched between high speed and low speed depending on the state of downlink packet transmission.
- CQ downlink quality information
- Non-Patent Document 1 3GPP TSG RAN WGl # 43 meeting, Seoul, Korea, November 7th -l it h, 2005 Rl_05lbl7, Agenda Item: 11 Continuous and onnectivity for Packet Data Users
- Source Siemens Title: TR 25.903 vO .2.0 'Continuous Connectivity for Pack et Data Users' "3GPP TR25.903vO.2.0 (2005-11): Continuous Connectivity for Paccket Data Users (Release7)” URL: http://www.3gpp.org/ftp/tsg — Ran / WGl—RLl / T SGRl—43 / Docs / Rl- 051617.zip
- Patent Document 1 JP 2003-199173 A
- Patent Document 2 US2003 / 00876058A1 “VARIABLE RATE CHANNEL QUALITY FEED BACK IN A WIRELESS COMMUNICATION SYSTEM”, Lucent Technologies Inc.
- Non-Patent Document 1 and Patent Documents 1 and 2 disclose methods for reducing the consumption of uplink radio resources, but do not disclose detailed operation specifications or mounting methods. Therefore, it is impossible to avoid wasteful consumption of uplink radio resources.
- the uplink DPDCH when the uplink DPDCH is not transmitted (the uplink DPDCH is not set or the uplink DPDCH is set as the capability of the mobile station). If the DPDCH control information does not need to be transmitted on the DPCCH, dummy data must be transmitted in order to transmit continuously, and radio resources are wasted.
- the present invention has been made to solve the above-described problem, and even when there is a mobile station that does not contribute to packet data transmission, it is possible to avoid wasteful consumption of uplink radio resources. It aims at obtaining a mobile station, a fixed station, and a radio
- the mobile station according to the present invention is provided with control channel processing means for setting a transmission mode of a transmission power control channel according to the transmission status of the dedicated packet channel monitored by the transmission status monitoring means.
- the transmission power control channel is multiplied by the channel coefficient corresponding to the transmission mode set by the processing means, and the transmission power control channel and the packet dedicated channel after the channel coefficient multiplication are multiplexed.
- the transmission power control channel can be prevented from being transmitted, so that it is possible to avoid unnecessary consumption of uplink radio resources.
- FIG. 1 is a configuration diagram showing a wireless communication system according to Embodiment 1 of the present invention.
- FIG. 2 is a configuration diagram showing a fixed station (base station 2 and base station control device 3) according to Embodiment 1 of the present invention.
- FIG. 3 is a configuration diagram showing a mobile station 1 according to Embodiment 1 of the present invention.
- FIG. 4 is a configuration diagram showing the inside of the multiplexing unit 36 of the mobile station 1.
- FIG. 5 is a configuration diagram showing the inside of a spreading unit 51 a in the mobile station 1.
- FIG. 6 is a configuration diagram showing the inside of a spreading unit 51b in the mobile station 1.
- FIG. 7 is a configuration diagram showing the inside of a spreading unit 51 c in the mobile station 1.
- FIG. 8 is an explanatory diagram showing an example of the definition of the second channel amplitude coefficient A additionally defined in the first embodiment.
- FIG. 9 is a configuration diagram showing the inside of a spreading unit 51a in the mobile station 1.
- FIG. 10 DPCCH transmission timing of the wireless communication system according to the second embodiment of the present invention It is explanatory drawing which shows.
- FIG. 11 is an explanatory diagram showing DPCCH transmission timing of the wireless communication system according to the second embodiment of the present invention.
- FIG. 12 is an explanatory diagram showing an example of a transmission status of uplink DPCCH (UL-DPCCH) and E-DCH channel (E-DPDCH / E-DPCCH).
- UL-DPCCH uplink DPCCH
- E-DPDCH E-DCH channel
- FIG. 13 is an explanatory diagram showing an example of a transmission status of uplink DPCCH (UL-DPCCH) and E-DCH channel (E-DPDCH / E-DPCCH).
- UL-DPCCH uplink DPCCH
- E-DPDCH E-DCH channel
- FIG. 14 is an explanatory diagram showing DPCCH transmission in the wireless communication system according to the fourth embodiment of the present invention.
- FIG. 15 is an explanatory diagram showing a specific example of UL-DPCCH transmission timing in FIG. 14.
- FIG. 16 is an explanatory diagram showing DPCCH transmission in the wireless communication system according to the fourth embodiment of the present invention.
- FIG. 17 is a configuration diagram showing the inside of a spreading unit 51a in the mobile station 1.
- FIG. 18 is an explanatory diagram showing an example of correspondence between a conventional DPCCH format (number) and an E-DPCCH format (number).
- FIG. 19 is an explanatory diagram showing DPCCH transmission timing of the wireless communication system according to the sixth embodiment of the present invention.
- control channel transmission control method is defined in detail according to the transmission status (state or mode) of the packet transmission channel. This unifies the operation of the mobile station.
- data is transmitted and received using a packet-dedicated channel (for HSDPA and E-DCH), and the conventional channels (DCH and DPDCH) are used for actual transmission time ( Alternatively, the uplink control channel (especially the control channel DPC) when not transmitting as the transmission channel setting) or the transmission capability of the mobile station CH) is used to control transmission power in the physical layer.
- a packet-dedicated channel for HSDPA and E-DCH
- DCH and DPDCH are used for actual transmission time
- the uplink control channel especially the control channel DPC when not transmitting as the transmission channel setting
- the transmission capability of the mobile station CH is used to control transmission power in the physical layer.
- the channel transmission power control coefficient is multiplied separately before the DPCCH is multiplexed with other channels.
- FIG. 1 is a configuration diagram showing a radio communication system according to Embodiment 1 of the present invention.
- the radio communication system includes a mobile station 1, a base station 2, and a base station control device 3. It is.
- FIG. 1 only one mobile station 1, base station 2 and base station control device 3 are shown for the sake of simplicity, but mobile station 1, base station 2 and base station control device 3 are shown for convenience. Multiple units may exist.
- the base station 2 covers a predetermined communication range generally called a sector or a cell, and communicates with a plurality of mobile stations 1. That is, the base station 2 and the mobile station 1 perform wireless communication using one or more wireless links or wireless channels.
- the base station control device 3 communicates with one or more base stations 2 and mobile stations 1 and manages radio resources of the radio communication system.
- the base station controller 3 is connected to an external communication network 4 such as a public telephone network or the Internet, and relays data communication between the mobile station 1 and the base station 2 and the network 4.
- an external communication network 4 such as a public telephone network or the Internet
- mobile station 1 is called UE (User Equipment)
- base station 2 is called NodeB
- base station controller 3 is called RNC (Radio Network Controller).
- Base station 2 and base station control device 3 constitute a fixed station.
- CPICH is a common pilot channel (Common Pilot CHannel). This channel includes a common pilot signal used by the mobile station 1 for detection of the base station 2 in the mobile station and detection / transmission timing detection.
- DL—DCH is a dedicated channel (Down Link-Dedicated Dada and tiannel) for transmitting downlink transmission data from the transport layer, which is the upper protocol layer of the fixed station, to the physical layer, which is the lower protocol layer. .
- the DPDCH is a downlink dedicated physical layer data channel (Down Link-
- This channel carries the DL-DCH signal.
- DL—DPCCH is a downlink dedicated physical layer control channel (Down Link-Dedicated Physical Control CHannel). This channel carries dedicated physical layer channel control information (eg, pilot signal, transmission power control information (TPC)), modulation format information (TFC) of DL_DPDCH data, and the like.
- dedicated physical layer channel control information eg, pilot signal, transmission power control information (TPC)
- TFC modulation format information
- HS—DSCH is a downlink high-speed shared channel for transmitting downlink transmission data from the transport layer, which is an upper protocol layer of a fixed station, to the physical layer, which is a lower protocol layer.
- Speed Downlink Shared CHannel
- HS—PDSCH is teed with a physical layer shared channel (High Speed—Physical Downlink Shared CHannel) for carrying HS—DSCH data.
- HS-SCCH is a shared channel (High Speed-Shared Control CHannel) for loading modulation format information of HS-PDSCH data.
- E-AGCH / E-RGCH is a channel for notifying the scheduling result for E-DCH.
- the expression format of the radio resource allocation result includes speed information (for example, E-TFC, maximum transmission speed setting value), power information (for example, ratio of maximum transmission power and maximum transmission power), channel amplitude information (for example, , Channel amplitude coefficient, ratio of channel amplitude coefficient). Since it is irrelevant to the features of the present invention, the description thereof will be omitted below.
- the E-HICH is a channel for the base station 2 to notify the mobile station 1 of the data reception determination result (ACK or NACK) for the E-DCH packet data transmitted from the mobile station 1.
- UL-DCH is a dedicated data channel (DCH) for uplink, and is the same as DL-D CH described above.
- UL-DPDCH is a dedicated physical layer data channel (DPDCH) for uplink, and is the same as DL-DPDCH described above.
- UL-DPCCH is a dedicated physical layer control channel (DPCCH) for uplink, and is the same as DL-DPCCH above.
- DPCCH dedicated physical layer control channel
- the HS-DPCCH is a reception determination result for the HS-DSCH data transmitted from the base station 2 to the specific mobile station 1 (ACK or NACK.
- the ACK and NACK are combined, and the HARQ-ACK And downlink quality information (CQI: Channel Quality Indicator) on the physical layer control channel (High Speed-Dedicated Physical Control CHannel) for mobile station 1 to transmit by time division multiplexing.
- CQI Channel Quality Indicator
- E_DPDCH is a dedicated physical layer channel carrying E-DCH.
- E-DPCCH is a dedicated physical layer control channel for loading E-DCH data modulation format information.
- DL-DCH, DL-DPDCH, and DL-DPCCH, and UL-DCH, UL-DP DCH, and UL-DPCCH are channels defined in Release 1999, the initial standard specification.
- HS-DSCH, HS-PDSCH, HS-SCCH, and HS-DPCCH are channels for HSDPA and are newly added in Release 5.
- E-AGCH, E-RGCH, E-HICH, E-DPDCH, and E-DPCCH are channels for E-DCH and are newly added in Release 6.
- DL—DPCCH and UL—DPCCH perform transmission / reception timing synchronization control, transmission power control, etc. between a specific mobile station 1 and base station 2, and maintain a physical radio link during communication .
- UL-DPCCH is basically transmitted continuously in the transmission operation according to the specifications before Release 5.
- CELL_DCH state a state in which data is transmitted and received using DCH, HS_DSCH, E-DCH, and the like is referred to as a CELL_DCH state (mode).
- FIG. 2 is a configuration diagram showing a fixed station (base station 2 and base station control device 3) according to Embodiment 1 of the present invention.
- a fixed station is a combination of the base station controller 3 and the base station 2 and is called UTRAN (Universal Terrestrial Radio Access Network).
- UTRAN Universal Terrestrial Radio Access Network
- Each block in the fixed station represents a logical functional unit (entity).
- entity Depending on the implementation form of the base station 2 and the base station control device 3, either of the above devices or an independent device is used. It can also exist in another device.
- DCH DCH
- DPDCH DCH
- Transmission power can be set if communication power is set not to set or transmit DCH (DPDCH).
- DPDCH DCH
- DCH Downlink Control Channel
- the HSDPA processing unit 11 inputs the HS-DSCH data and the higher layer control information output from the radio resource control unit 16, forms an HS_PDSCH / HS_SCCH signal, and transmits various transmission control information (channel transmission information). Multiple types of information such as power control information: Output to part 17.
- the CPICH processing unit 12 outputs pilot channel signals and various transmission control information for CPICH transmission control (various information such as channel transmission power control information: not shown) to the multiplexing unit 17.
- the DL—DPCCH processing unit 13 forms a downlink DPCCH signal (DL—DPCCH) and various transmission control information for transmitting the downlink DPCCH signal (various information such as channel transmission power control information: not shown) ) Is output to the multiplexer 17.
- DL—DPCCH downlink DPCCH signal
- various transmission control information for transmitting the downlink DPCCH signal variable information such as channel transmission power control information: not shown
- DL—DCH processing unit 14 inputs DCH data to be transmitted in the downlink to form a downlink DPDCH signal and various transmission control information for transmitting the downlink DPCCH signal (such as channel transmission power control information). Are output to the multiplexing unit 17.
- the E-DCH processing unit 15 receives the E-DPDCH signal output from the demultiplexing unit 21 and constructs an E-HICH signal from the reception determination result of the E-DCH packet data.
- Various transmission control information for transmission (various information such as channel transmission power control information: not shown) is output to multiplexing section 17.
- the E-DCH processing unit 15 performs radio resource allocation (so-called scheduling) for transmitting an uplink E-DCH signal, and configures an E-AGCH / E-RGCH channel based on the allocation result. 1 Output to 7.
- E-HICH processing and E-AGCH / E-RGCH processing are performed in parallel. However, since it is not directly related to the gist of the present invention, the description thereof will be omitted as appropriate.
- the E-DCH processing unit 15 inputs the E-DPDCH signal, constructs an E-AGCHZE-RGCH signal from the E-DCH transmission control processing result (record, so-called scheduling result), and transmits various transmission control information. (Various information such as channel transmission power control information: not shown)
- the power to output the E-AGCHZE-RGCH signal to the multiplexing unit 17 together with the details thereof is not necessary for the description of the present invention. Description is omitted.
- the radio resource control unit 16 controls each unit on the fixed station side in order to control various settings such as channel combinations and transmission speeds necessary for transmission and reception with the mobile station 1.
- the radio resource control unit 16 inputs and outputs various control information of the upper protocol layer.
- Upper layer control information Includes the amplitude coefficient setting, transmission timing setting, communication speed setting (TFC, E-TFC), etc. for each channel.
- the upper layer control information such as the above various setting information is transmitted from the base station control device 3 to the radio resource control unit 35 of the mobile station 1 via the base station 2 in the initial stage of communication start or during communication. .
- RRC_signalling higher layer control information transmitted / received to / from mobile station 1 is called RRC_signalling.
- RRC signaling performed between the radio resource control unit 16 of the fixed station and the radio resource control unit 35 of the mobile station 1 is not possible when the DPDCH is set at the initial communication setting. If FACH / RACH (not shown) or DCH (DPDCH) is not set even during communication, HS-PDSCH (downlink) or E-PDPDCH (uplink) is used.
- DCH DCH
- DPDCH DCH
- DPDCH DCH
- the multiplexing unit 17 multiplexes various downlink channels (HS—PDSCH, HS—SCCH, CPICH, DL-DPCCH, DL-DPDCH, E—AGCH / E—RGCH, E—HICH signals).
- the multiplexed signal is output to the transmitter 18. Details of the operation of the multiplexing unit 17 are omitted.
- the transmission unit 18 converts the multiplexed signal output from the multiplexing unit 17 into transmission power and transmission frequency necessary for radio transmission, and transmits the radio frequency signal, which is the converted signal, to the mobile station 1 via the antenna 19. Send.
- the reception unit 20 converts the radio frequency signal into reception signal power and reception frequency that can be processed by the separation unit 21.
- the converted signal may be referred to as a baseband signal.
- the demultiplexing unit 21 receives the baseband signal output from the receiving unit 20 and demultiplexes the data Z control information of various uplink channels. Since the first embodiment describes the W-CDMA system, a known despreading technique is used. From the separation unit 21, the upper layer control information is output to the radio resource control unit 16, the E-DCH data (DCH data) is output to the upper layer and the transmission / reception channel monitoring unit 22, and the E-DPD CH signal is — Output to DCH processor 15 and HS— DPCCH signal to HSDPA processor 11.
- the transmission / reception channel monitoring unit 22 includes downlink HS—DSCH data (DCH data) transmitted from the base station 2 to the mobile station 1 and E—DCH data (DCH data) transmitted from the mobile station 1. To monitor the data transmission / reception status in each channel.
- the transmission / reception channel monitoring unit 22 exchanges various control information (not shown) with each block in the fixed station according to the data transmission / reception status and transmission / reception state (transmission / reception setting mode) in each channel.
- FIG. 3 is a configuration diagram showing the mobile station 1 according to the first embodiment of the present invention.
- the internal structure of the mobile station (function block, data and control signal flow) is described below using FIG.
- the HSDPA processing unit 31 inputs the CPICH signal and the HARQ-ACK information included in the HS-DPCCH signal from the separation unit 40.
- the HSDPA processing unit 31 generates downlink quality information (CQI) based on the CPICH signal, multiplexes the downlink quality information (CQI) and HARQ-ACK information to form an HS-DPCCH signal, HS—Various transmission control information for transmitting DPCCH (various information such as channel transmission power control information: not shown) is output to multiplexing section 36.
- the UL-DPCCH processing unit 32 constitutes an uplink DPCCH signal (UL-DPCCH) and various transmission control information for transmitting the uplink DPCCH signal (various information such as channel transmission power control information: not shown) ) Is output to multiplexing unit 36.
- the UL-DPCCH processing unit 32 constitutes a control channel processing means.
- UL-DCH processing unit 33 inputs DCH data to be transmitted in the uplink, forms an uplink DPDCH signal (UL-DPDCH), and various transmission controls for transmitting the uplink DPCCH signal Information (Various information such as channel transmission power control information: Shown Output) to the multiplexing unit 36.
- UL-DPDCH uplink DPDCH signal
- Various information such as channel transmission power control information: Shown Output
- the E-DCH processing unit 34 inputs E-DCH data or higher layer control information output from the radio resource control unit 35, determines transmission format information (E-TFC), and transmits the transmission format information (E-TFC).
- the E-DPDCH signal is constructed from E-DCH data according to the format information, and the transmission format information (E-TFC) power E-DPCCH signal is constructed.
- the E-DCH processing unit 34 outputs various transmission control information (various information such as channel transmission power control information: not shown) for transmitting the E_DPDCH, E_DPCCH, and E-DCH signals to the multiplexing unit 36. .
- the E-DCH processing unit 34 receives the E-AGCHZE-RGCH signal transmitted from the fixed station, and controls the transmission of E-DCH packet data based on the result included in the E-AGCH / E-RGCH signal. . Furthermore, the E-DCH processing unit 34 performs retransmission control of E-DCH data based on the packet reception determination result included in the E-HICH signal.
- the radio resource control unit 35 controls each unit of the mobile station 1 in order to control various settings such as channel combinations and transmission speeds necessary for transmission and reception with the fixed station.
- the wireless resource control unit 35 inputs and outputs various control information of the upper protocol layer.
- Upper layer control information includes amplitude coefficient settings, transmission timing settings, communication speed settings (TFC, E-TF C), etc. for each channel.
- the upper layer control information such as the above various setting information is transmitted from the base station control device 3 to the radio resource control unit 35 of the mobile station 1 via the base station 2 in the initial stage of communication start or during communication. .
- RRC-sig nailing In the W-CDMA system, upper layer control information transmitted / received to / from a fixed station is called RRC-sig nailing.
- RRC signaling performed between the radio resource control unit 16 of the fixed station and the radio resource control unit 35 of the mobile station 1 is not possible when the DPDCH is set at the initial communication setting. If FACH / RACH (not shown) or DCH (DPDCH) is not set even during communication, HS-PDSCH (downlink) or E-PDPDCH (uplink) is used.
- Multiplexer 36 multiplexes signals of various uplink channels (HS—DPCCH, UL—DPCCH (UL—DP DCH), E—DPDCH, E—DPCCH), and outputs the multiplexed signal to transmitter 37 To do.
- the multiplexing unit 36 constitutes multiplexing means.
- the transmission unit 37 converts the multiplexed signal output from the multiplexing unit 36 into transmission power and transmission frequency necessary for radio transmission, and transmits the radio frequency signal, which is the converted signal, to the fixed station via the antenna 38. To do.
- the transmission unit 37 and the antenna 38 constitute transmission means.
- the reception unit 39 converts the radio frequency signal into reception signal power and reception frequency that can be processed by the separation unit 40.
- the converted signal may be referred to as a baseband signal.
- the separation unit 40 receives the baseband signal output from the reception unit 39 and separates various channels, data, and control information included in the downlink.
- the W CDMA system is described, so that the known despreading technique is used.
- the upper layer control information is output to the radio resource control unit 35, and the E—AGCH / £ 1 « ⁇ ⁇ ⁇ 1 / £ ⁇ 1100 ⁇ 1 signal is sent to the £ —0 ⁇ 1 processing unit 34.
- the HSDPA reception data is output to the upper layer and the transmission / reception channel monitoring unit 41, and the CPICH signal and HARQ ACK information are output to the HSDPA processing unit 31.
- the transmission / reception channel monitoring unit 41 inputs downlink HS—DSCH data (DCH data) transmitted from the base station 2 to the mobile station 1 and E—DCH data (DCH data) transmitted to the fixed station.
- the data transmission / reception status in each channel is monitored.
- the transmission / reception channel monitoring unit 41 exchanges various control information (not shown) with each block in the fixed station according to the data transmission / reception status and transmission / reception state (transmission / reception setting mode) in each channel.
- the transmission / reception channel monitoring unit 41 constitutes transmission status monitoring means.
- FIG. 4 is a configuration diagram showing the inside of the multiplexing unit 36 of the mobile station 1.
- the spreading part 51a of the multiplexing part 36 inputs UL-DPCCH and UL-DPDCH, which are the channels of the release 1999 specification, and provides the spectrum for the UL-DPCCH and UL-DPDCH.
- the complex signal S is output by performing the spectrum spreading process and the multiplexing process.
- the spreading unit 51b of the multiplexing unit 36 inputs HS-DPCCH, which is a channel of Release 5, specifications, performs spectrum spread processing and multiplexing processing on the HS-DPCCH, and outputs a complex signal S.
- HS-DPCCH which is a channel of Release 5, specifications
- the spreading unit 51c of the multiplexing unit 36 inputs E-DPDCHZE-DPCCH, which is the Release 6 specification, performs spread spectrum processing and multiplexing processing on the E_DPDCHZE_DPCCH, and outputs a complex signal S.
- E-DPDCHZE-DPCCH which is the Release 6 specification
- mapping a process of assigning to the I axis and ZQ axis in the complex plane.
- the adder 52 is configured to output the complex signals (S 1, S 2, S 5
- the multiplier 53 multiplies the complex signal (I + jQ) output from the adder 52 by a code for identifying each mobile station 1 (in W—CDMA, a complex code called a scramble code) S.
- the baseband signal S that is the multiplication signal is output to the transmitter 37.
- FIG. 5 is a configuration diagram showing the inside of the spreading unit 51 a in the mobile station 1.
- the spreading unit 51a performs spreading processing for physical channels (DPCCH, DPDCH (multiple channels can be set for DPDCH)) corresponding to the data channel (DCH) specified in Release 1999. Note that the processing related to the DPDCH channel that is not set is not performed or is not implemented as a mobile station capability.
- DPCCH physical channels
- DPDCH multiple channels can be set for DPDCH
- DCH data channel
- the multiplier 62 applies the channel amplitude coefficient (,,) to the spread signal output from the multiplier 61.
- Multiplier 63 spreads DPCCH XCX ⁇ out of the spread signal output from multiplier 62.
- a signal is input, the spread signal is multiplied by a second channel amplitude coefficient ⁇ which is a gain factor, and a spread signal which is the multiplication result is output.
- the adder 64 divides the spread signal of each channel into a plurality of gnoles, adds the spread signals of each group, and outputs each added signal.
- the multiplier 65 inputs the addition signal of the group related to DPCCH, DPDCH, DPDCH, and DPDCH, and dpcn in order to make the added signal correspond to the axis of the complex signal (S).
- the multiplication process of the multiplier 65 shows a principle operation block for allocating the output signal of the adder 64 (denoted by Q in the figure) to the Q axis on the complex plane. Therefore, the mobile station 1 need not exist as a real device in the implementation.
- the I-axis and Q-axis on the complex plane indicate the relative phase relationship (or reference) between the signal components of each axis, and do not indicate absolute phase.
- the adder 66 adds the output signal of the adder 64 (denoted by I in the figure) and the output signal of the multiplier 65 to form a complex signal (S), and outputs the complex signal (S).
- FIG. 6 is a configuration diagram showing the inside of the spreading unit 51 b in the mobile station 1.
- PCCH PCCH
- the multiplier 71 of the spreading unit 51b inputs HS—DPCCH, which is a channel of Release 5, specifications, the HS—DPCCH is multiplied by a channel separation code (C), and the multiplication result hs
- N in Fig. 6 is set prior to communication or during communication (Set or C
- N 3, 4, 5, 6 and processing related to DPDCH that is not set Is not done.
- HS—DPCCH is the max-apdch of the two inputs in multiplier 71 based on the setting of N
- the multiplier 72 applies a channel amplitude coefficient (: hs) to the spread signal output from the multiplier 71.
- the multiplier 73 multiplies the spread signal (denoted by Q in the figure) output from the multiplier 72 by an imaginary number (SQRT (— 1)) of (3) corresponding to the complex signal (S). .
- the multiplication process of the multiplier 73 shows a principle operation block for assigning the output signal of the multiplier 72 (denoted by Q in the figure) to the Q axis on the complex plane. Therefore, the mobile station 1 need not exist as a real device in the implementation.
- the I-axis and Q-axis on the complex plane indicate the relative phase relationship (or reference) between the signal components of each axis, and do not indicate absolute phase.
- the adder 74 adds the output signal of the multiplier 72 (denoted by I in the figure) and the output signal of the multiplier 73 to form a complex signal (S), and outputs the complex signal (S).
- FIG. 7 is a configuration diagram showing the inside of the spreading unit 51 c in the mobile station 1.
- the spreader 51c performs well-known spread processing for physical channels (E_DPCCH, E-DPDCH (multiple E-DPDCH can be set in the standard)) related to the data channel (E-DCH) additionally specified in Release 6. is there. Similar to DPDCH, E— DPDCH is standard (1) When multiple channels are transmitted simultaneously, (2) When multiple channels are set, but only one channel is transmitted, (3) Mobility capability If not set as, it is possible. Figure 7 gives a general explanation.
- Multiplier 81 of spreader 51c is a channel of release 6 specification E—DPCCH ⁇ E_DP
- Multiplier 82 applies a channel amplitude coefficient (for the spread signal output from multiplier 81 to
- Multiplier 83 converts the spread signal output from multiplier 82 to the I-axis or complex signal (S).
- the spread signal that is the calculation result is output.
- the coefficient is 1 or SQRT (_ 1).
- the multiplication processing of the multiplier 83 shows a principle operation block for assigning each output signal of the multiplier 82 to the I axis or the Q axis on the complex plane. Therefore, the mobile station 1 need not exist as a real device in the implementation.
- the I-axis and Q-axis on the complex plane indicate the relative phase relationship (or reference) between the signal components of each axis, and do not indicate absolute phase.
- Figure 5 and Figure 6 indicate the relative phase relationship (or reference) between the signal components of each axis, and do not indicate absolute phase.
- the adder 84 adds the output signals of the multiplier 83 to form a complex signal (S).
- DCH non-transmission operation state non-transmission setting or non-transmission mode
- DCH transmission may be used to send and receive higher layer control information prior to setting the packet data communication channel.
- HSDPA transmission packet data of fixed station (base station controller 3, base station 2) — DSCH data) is input to the HSDPA processing unit 11 and the transmission / reception channel monitoring unit 22.
- the HSDPA processing unit 11 When the HS-DSCH data is input, the HSDPA processing unit 11 composes an HS-PDSCH signal from the HS-DSCH data and higher layer control information output from the radio resource control unit 16, and the HS-PDSCH signal is converted into the HS-PDSCH signal. Output to multiplexing unit 17. HS—DSCH data and upper layer control information output from the radio resource control unit 16 may be output either or both may be output.
- information such as the HS-PDSCH modulation format becomes an HS-SCCH signal, and the H S-SCCH signal is also output to the multiplexing unit 17.
- the multiplexing unit 17 Upon receiving the HS-PDSCH signal and the HS-SCCH signal from the HSDPA processing unit 11, the multiplexing unit 17 performs a multiplex 'spreading process on the HS-PDSCH signal and the HS-SCCH signal. Generates multiple signals (HS-PDSCH signal, HS_SCCH signal).
- the transmission unit 18 Upon receiving the multiplexed signal (HS—PDSCH signal, HS—SCCH signal) from the multiplexing unit 17, the transmission unit 18 converts the multiplexed signal into transmission power and transmission frequency necessary for wireless transmission, and through the antenna 19, A radio frequency signal which is a signal after conversion is transmitted to mobile station 1.
- HS—PDSCH signal HS—SCCH signal
- the reception unit 39 of the mobile station 1 receives the radio frequency signal transmitted from the fixed station by the antenna 38, the reception unit 39 converts the radio frequency signal into reception signal power and reception frequency that can be processed by the separation unit 40. Then, the baseband signals (HS—PDSCH signal, HS—SCCH signal) that are the converted signals are output to the separation unit 40.
- the baseband signals HS—PDSCH signal, HS—SCCH signal
- the separator 40 When receiving the baseband signal (HS—PDSCH signal, HS—SCCC H signal) from the receiver 39, the separator 40 performs reception determination of HS—PDSCH packet data, and sends the HA-DSCH data to the upper protocol layer. (Not shown) and output to the transmission / reception channel monitoring unit 41.
- the separation unit 40 outputs the HS-PDSCH packet data reception determination result (HARQ-AC K) to the HSDPA processing unit 31.
- the HSDPA processing unit 31 Upon receiving the HS-PDSCH packet data reception determination result (HARQ_ACK), the HSDPA processing unit 31 receives the reception determination result (HARQ_ACK) as the HS-DPC. Output to the multiplexing unit 36 as a CH signal.
- the HSDPA processing unit 31 obtains downlink channel quality information (CQI) based on the CPICH signal (described later) received by the receiving unit 39 in the CQI processing block, and obtains the downlink channel quality information (CQI) from HS— It is output to the multiplexing unit 36 as a DPCCH signal.
- CQI downlink channel quality information
- the multiplexing unit 36 When the multiplexing unit 36 receives the HS-DPCCH signal from the HSDPA processing unit 31, the multiplexing unit 36 multiplexes the HS-D PCCH signal with another uplink channel, and the multiplexed signal (HS-DPCCH signal, other uplink channel). Output to transmitter 37.
- the transmission unit 37 Upon receiving the multiplexed signal (HS—DPCCH signal, other uplink channel channel) from the multiplexing unit 36, the transmission unit 37 converts the multiplexed signal into transmission power and transmission frequency necessary for radio transmission, and transmits the signal via the antenna 38. , Transmit the radio frequency signal that is the converted signal to the fixed station
- the CPICH processing unit 12 of the fixed station (base station control device 3, base station 2) outputs the common pilot to the multiplexing unit 17 as a C PICH signal.
- the multiplexing unit 17 Upon receiving the CPICH signal from the CPICH processing unit 12, the multiplexing unit 17 multiplexes the CPICH signal with another downlink channel and outputs the multiplexed signal (CPICH signal, other downlink channel channel) to the transmission unit 18.
- the transmission unit 18 Upon receiving the multiplexed signal (CPICH signal, other downlink channel) from the multiplexing unit 17, the transmission unit 18 converts the multiplexed signal into transmission power and transmission frequency necessary for radio transmission, and passes through the antenna 19. The radio frequency signal that is the converted signal is transmitted to the mobile station 1.
- CPICH signal other downlink channel
- the reception unit 39 of the mobile station 1 receives the radio frequency signal transmitted from the fixed station by the antenna 38, the reception unit 39 converts the radio frequency signal into reception signal power and reception frequency that can be processed by the separation unit 40. Then, the baseband signal (CPICH signal, other downlink channel) that is the converted signal is output to the demultiplexing unit 40.
- CPICH signal other downlink channel
- the demultiplexing unit 40 When receiving the baseband signal (CPICH signal, other downlink channel channel) from the receiving unit 39, the demultiplexing unit 40 demultiplexes the CPICH signal and outputs it to the HSDPA processing unit 31.
- the DL—DPCCH processing unit 13 of the fixed station (base station controller 3, base station 2)
- the physical layer control information for is output to the multiplexing unit 17 as a DL-DPCCH signal.
- Multiplexer 17 receives DL-DPCCH signal from DL-DPCCH processor 13 and receives the D-DPCCH signal.
- the L—DPCCH signal is multiplexed with another downlink channel, and the multiplexed signal (DL—DPCCH signal, another downlink channel) is output to the transmitter 18.
- the transmission unit 18 Upon receiving the multiplexed signal (DL—DPCCH signal, other downlink channel channel) from the multiplexing unit 17, the transmission unit 18 converts the multiplexed signal into transmission power and transmission frequency necessary for radio transmission, and via the antenna 19.
- the radio frequency signal that is the converted signal is transmitted to mobile station 1.
- the receiving unit 39 of the mobile station 1 When the receiving unit 39 of the mobile station 1 receives the radio frequency signal transmitted from the fixed station by the antenna 38, the receiving unit 39 converts the radio frequency signal into a received signal power and a receiving frequency that can be processed by the separating unit 40. Then, the baseband signal (DL—DPCCH signal, other downlink channel) that is the converted signal is output to the demultiplexing unit 40.
- DL—DPCCH signal, other downlink channel the baseband signal that is the converted signal is output to the demultiplexing unit 40.
- the demultiplexing unit 40 When receiving the baseband signal (DL—DPCCH signal, other downlink link channel) from the receiving unit 39, the demultiplexing unit 40 demultiplexes the DL—DPCCH signal and maintains link such as synchronization in the physical layer (not shown). Les).
- the E-DCH processing unit 15 of the fixed station (base station controller 3, base station 2) outputs packet data transmission permission information for the mobile station 1 to the multiplexing unit 17 as an E-AGCH / E-RGCH signal.
- the E-DCH processing unit 15 receives the E-DPDCH received from the mobile station 1, and if the E-DPDCH includes transmission request information (SI: Schedule Information), permits transmission of packet data. Used to determine When E-DPDCH contains E-DCH data, it performs reception judgment based on E-DPCCH received from mobile station 1 and outputs an E-HICH signal to multiplexing section 17.
- SI Schedule Information
- the multiplexing unit 17 Upon receiving the E_AGCH / E_RGCH / E_HICH signal from the E-DCH processing unit 15, the multiplexing unit 17 multiplexes the E_AGCH / E_RGCH / E_HICH signal with another downlink channel, and the multiplexed signal (E-AGCHZE — RGCH / E— HICH signal and other downlink channels) are output to transmitter 18.
- the transmission unit 18 Upon receiving the multiplexed signal (E—AGCH / E—RGCH / E HICH signal, other downlink channel) from the multiplexing unit 17, the transmission unit 18 transmits the multiplexed signal to the transmission power and transmission frequency necessary for radio transmission.
- the radio frequency signal which is the converted signal, is transmitted to the mobile station 1 via the antenna 19.
- the reception unit 39 of the mobile station 1 When the reception unit 39 of the mobile station 1 receives the radio frequency signal transmitted from the fixed station by the antenna 38, the reception unit 39 converts the radio frequency signal into reception signal power and reception frequency that can be processed by the separation unit 40.
- the baseband signal (E—AGCH / E—RGC H / E—HICH signal, other downlink channel) that is the converted signal is output to the demultiplexing unit 40.
- the demultiplexing unit 40 When receiving the baseband signal (E_AGCHZE_RGCH / E_H ICH signal, other downlink channel) from the receiving unit 39, the demultiplexing unit 40 demultiplexes the signal of each channel and outputs it to the E_DCH processing unit 34.
- the E-DCH processing unit 34 receives the E-DCH data and outputs E-D based on the packet data transmission permission information included in the E-AGCH / E-RGCH signal output from the separation unit 40. Determine the transmission speed of CH data.
- the E-DCH processing unit 34 configures the E-DPD CH and E-DPCCH based on the transmission rate of the E-DCH data, and the E-DPDCH and E-DPCCH are E-DPDC H / E-DPCCH. It is output to the multiplexing unit 36 as a signal.
- the multiplexing unit 36 When the multiplexing unit 36 receives the signal from the £ -01011 processing unit 34, the multiplexing unit 36 sends the E-DPDCH / E-DPCCH signal to the other signals. It is multiplexed with the uplink channel, and the multiplexed signal (E—DPDCH / E—DPCCH signal, other uplink channel) is output to the transmitter 37.
- the transmission unit 37 Upon receiving the multiplexed signal (E_DPDCHZE_DPCCH signal, other uplink channel) from the multiplexing unit 36, the transmission unit 37 converts the multiplexed signal into transmission power and transmission frequency necessary for radio transmission, and via the antenna 38, The radio frequency signal that is the converted signal is transmitted to the fixed station.
- E_DPDCHZE_DPCCH signal other uplink channel
- the separating unit 21 can process the radio frequency signal.
- Baseband that is a signal after conversion to a received signal power and reception frequency
- the signal (E—DPDCH / E—DPCCH signal, other uplink channel) is output to the separation unit 21.
- the separation unit 21 Upon receiving the baseband signal (E—DPDCH / E—DPCCH signal, other uplink channel), the separation unit 21 separates the E—DCH data from the E—DPDCH signal, and receives the E— DCH data is output to the upper protocol layer (not shown) and the transmission / reception channel monitoring unit 22.
- the separation unit 21 outputs the E-DPDCH signal to the E-DCH processing unit 15.
- the E-DCH processing unit 15 Upon receiving the E-DPDCH signal from the separation unit 21, the E-DCH processing unit 15 permits the packet data transmission if the E-DP DCH signal includes a packet data transmission request (SI). Used to determine information.
- SI packet data transmission request
- the E-DCH processing unit 15 performs reception determination processing and configures E-HICH from the determination result.
- the above transmission / reception operations support processing based on the conventional release standard (release).
- FIG. 4 shows the internal configuration of the multiplexing unit 36 in the mobile station 1 as described above.
- the power related to the DPDCH signal is also shown in order to show the general-purpose operating principle.
- the DPDCH is not set, and the processing related to the DPDCH is not performed. The explanation is omitted here.
- the operation related to DPDCH processing is the same as the operation principle based on the conventional standard (Release 6).
- the DPCCH signal input to multiplexing section 36 of mobile station 1 is input to spreader 51a of multiplexing section 36.
- the spreading unit 51a of the multiplexing unit 36 When receiving the DPCCH signal, the spreading unit 51a of the multiplexing unit 36 performs spread spectrum processing on the DPCCH signal and outputs the complex signal S, which is a spread signal, to the adding unit 52.
- multiplier 61 of spreading section 51a multiplies the D PCCH signal by channel separation code C as shown in FIG. Issue DPCCH XC.
- multiplier 62 When multiplier 62 receives multiplier 61 power spread signal DPCCH X C,
- the first channel amplitude coefficient is multiplied by the spread signal DPC, which is the multiplication result.
- multiplier 63 When multiplier 63 receives spread signal DPCCH XCX ⁇ from multiplier 61, multiplier 63 adds a second channel amplitude to the spread signal before it is added to other channels by adder 64. Multiply by the coefficient ⁇ and the resulting spread signal DPCCH XCX ⁇ X
- the multiplier 65 multiplies the imaginary number (SQRT (— 1)) by the multiplier 65 to obtain a Q-axis signal component.
- imaginary multiplication need not exist.
- the Q-axis signal component is converted into the Q-axis component of the complex signal S (I + jQ) by the adder 66.
- FIG. 8 shows an example of the definition of the second channel amplitude coefficient A additionally specified in the first embodiment.
- the value of the second channel amplitude coefficient A must be specified in accordance with the standard as shown in Fig. 8 in order to unify the mobile station operation in the communication system. (2) is notified to the mobile station 1 as higher layer control information, and is notified from the radio resource control unit 35 to the UL-DPCCH processing unit 32.
- the HS-DPCCH signal input to the multiplexing unit 36 of the mobile station 1 is input to the spreader 51 b of the multiplexing unit 36.
- the spreading unit 51b of the multiplexing unit 36 performs spread spectrum processing on the HS-DPCC H signal, and adds the complex signal S, which is a spread signal, to the adding unit 52
- the multiplier 71 of the spreading unit 51b multiplies the HS-DPCCH signal by the channel separation code C as shown in FIG.
- the spread signal HS—DPCCH X C is output.
- the multiplier 72 Upon receiving the spread signal HS—DPCCH X C from the multiplier 71, the multiplier 72 receives the spread signal.
- the HS-DPCCH signal input to the spreader 51b is the max-dpch hs-dpcch of the complex signal S according to the maximum DPDCH parallel transmission setting number (N) reported from the fixed station as an upper layer control coefficient.
- Processing related to the axis component output is performed.
- the detailed operation principle of the diffusion unit 51b is the same as that of the conventional standard (Release 6).
- the PCCH signal is input to the spreader 51c of the multiplexing unit 36.
- the spreading unit 51c of the multiplexing unit 36 includes E-DPDCH to E-DPDCH signal and E-DPCCH.
- Spread spectrum complex signal S is output to adder 52 as e-dpch
- the multiplier 81 of the spreading unit 51c includes the E-DPDCH to E_DPDCH signals and the E-DPCCH
- the channel separation code (C to C, C) is multiplied by PCCH, and the multiplication result
- the multiplier 82 When the multiplier 82 receives the spread signal from the multiplier 81, the multiplier 82 multiplies the spread signal by a channel amplitude coefficient (/ 3 to ⁇ ⁇ ⁇ ), and outputs a spread signal as a result of the multiplication.
- the multiplier 83 When the multiplier 83 receives the spread signal from the multiplier 82, the multiplier 83 converts the spread signal into a complex signal (S).
- the adder 84 adds the output signals of the multiplier 83 to form a complex signal (S).
- uplink DPCCH (UL_DPCCH) transmission control processing will be described using FIG. 5 and FIG.
- the setting of the second channel amplitude coefficient A is set as ⁇ Switch off, and the multiplier 63 in FIG. 5 multiplies the second channel amplitude coefficient A, for example.
- the timing control for changing the coefficient value is performed by controlling the output timing of the UL-D PCCH signal output from the UL-DPCCH processing unit 32, or from the UL-DPCCH processing unit 32 to the multiplexing unit 36. Not) can be realized.
- UL-DPCCH processing unit When using UL-DPCCH transmission control by timing control of Acc value change, when using parameters, UL-DPCCH processing unit is notified by control information notification from upper protocol layer (called primitive in W-CDMA) 32 is notified of the parameter.
- primitive in W-CDMA control information notification from upper protocol layer
- the UL-DPCCH processing unit 32 cooperates with the transmission / reception status monitoring of the uplink Z downlink packet in the transmission / reception channel monitoring unit 41, so that the transmission between the DPCCH continuous transmission state (mode) and the discontinuous transmission state (mode) occurs. It controls the transition or transition between the conventional transmission power state (mode) and the low transmission power state (mode).
- the packet transmission monitoring expression and UL-DPCCH transmission control in the transmission / reception channel monitoring unit 41 include (1) definition for each uplink and downlink (for example, UL-ACTIVE / DEACTIV E, DL—defined as ACTIVE / DEACTIVE), and (2) defining both links together (for example, defining as Normal mode or ConCon mode).
- the fixed station transmits state change information (trigger)
- the mobile station 1 transmits state change information (trigger)
- Various methods are possible, such as (4) combining (1) to (3), all of which are managed and transmitted by a fixed station.
- the transmission power of the uplink control channel DPCCH is controlled by a method such as discontinuous transmission
- the previous stage of multiplexing the DPCCH with other uplink channels In FIG. 2, since the transmission power control coefficients C and ⁇ are separately multiplied, it is possible to prevent the uplink control channel DPCCH from being transmitted when the packet dedicated channel is not transmitted (or not received). For this reason, there is an effect that it is possible to avoid wasteful consumption of uplink radio resources.
- the DPCCH transmission power can be easily returned to the conventional specified operation.
- the quantized value discrete value
- the outer loop transmit power control performed by the conventional base station where the transmission power step (granularity) is rough It is not possible to perform subtle channel transmission power control (Outerloop Transmit Power Control: 0 ⁇ OldB unit control, for example).
- this Embodiment 1 can also be applied to DPCCH transmission power reduction by providing a separate coefficient multiplication process, and radio resource control becomes flexible, so uplink interference control is efficiently performed. It can be carried out.
- the second channel amplitude coefficient A which is an additional channel coefficient
- the second channel amplitude coefficient A can be defined using the same defined value and signaling rule as the conventional channel coefficient (/ 3). .
- the mobile station 1 does not need to maintain a separate specified value or table, and the configuration is not complicated.
- the mobile station 1 since there is little increase in the exchange of higher layer control information (so-called overhead) performed between the mobile station 1 and the fixed station, an increase in the amount of uplink interference can be suppressed.
- the maximum total transmission power is determined by the mobile station capability (Power class) depending on the combination of channels transmitted simultaneously from mobile station 1, the channel amplitude coefficient (i3), signal waveform characteristics, etc. It is specified that the value can be limited to a value smaller than the value.
- ⁇ ⁇ ⁇ may be used instead of i3 to limit the maximum value of the total transmission power.
- spreading section 51a is configured as shown in FIG. 5.
- the additional channel amplitude multiplication processing by the unit 63 is arranged in series.
- the configuration of the diffusing unit 51a is not limited to this, and may be configured as shown in FIG.
- the multiplier 62 may include the multiplication process of the multiplier 63 by replacing the channel amplitude coefficient (/ 3c) in the multiplier 62 with / 3 c ′.
- the multiplier 63 is included as part of the DPCCH channel amplitude processing flow (eg W_CDMA standard TS 25. 214, etc.) that does not need to be multiplied as an explicit multiplier. It may be made rare. By defining it as part of the DPCCH channel amplitude processing flow specification, it can be processed in software, so that the circuit configuration of mobile station 1 is not complicated and mobile station 1 does not need to be enlarged. can get.
- the DPCCH channel amplitude processing flow eg W_CDMA standard TS 25. 214, etc.
- the second channel amplitude coefficient A which is an additional channel coefficient, is directly defined, and the transmission power is controlled by multiplying by the spreading unit 51a.
- the power offset amount ( ⁇ DPCCH) for the transmission power of DPDCH may be specified.
- the fixed channel power mobile station 1 may be notified of the value to be set as higher layer control information to obtain the second channel amplitude coefficient A.
- a quantized value When used for PCCH transmission power control, a quantized value may be used as in the conventional case or may be used without quantization.
- downlink DP CCH (DL_DPCCH) transmission
- DL_DPCCH downlink DP CCH
- transmission may be performed in the DPCCH transmission format similar to that of the conventional standard release 1999 or may be transmitted in a modified format (referred to as fractional DPCH) additionally specified in Release 6.
- Non-Patent Document 1 similarly to Non-Patent Document 1, a modified format is assumed, and higher layer control information from a fixed station is transmitted to mobile station 1 by HS-DSCH.
- Embodiment 2 In the first embodiment, the transmission power control coefficients C and ⁇ are separately multiplied before the DPCCH is multiplexed with other uplink channels. However, in this second embodiment, transmission and reception channel monitoring is performed. What controls the transmission interval of the transmission power control channel used for transmission power control according to the transmission status of the packet dedicated channel monitored by the unit 41 will be described.
- the uplink DPCCH (UL-DPCCH), which has been conventionally transmitted continuously, is transferred to the mobile station 1 capable of non-continuous transmission operation according to the transmission state of the packet dedicated channel.
- the degree (period) of non-continuous transmission is temporarily increased or decreased.
- UL-D PCCH is continuously transmitted.
- transitioning from a non-continuous transmission state gradually increase the UL—DPC CH transmission interval.
- non-transmission timing control is performed by changing the channel amplitude coefficient of UL-DP CCH.
- the receiving unit 20 of the fixed station constitutes a receiving unit
- the separating unit 21 constitutes a separating unit
- the transmission / reception channel monitoring unit 22 of the fixed station constitutes reception mode setting means for setting the reception mode of the transmission power control channel from the reception interval of the transmission power control channel.
- FIG. 10 is an explanatory diagram showing an example of DPCCH transmission timing in the radio communication system according to Embodiment 2 of the present invention.
- Figure 10 (A) shows the transmission interval of UL-DPCCH that is temporally adjacent when the UL-DPCCH transitions to the discontinuous transmission state from the point when packet data enters the non-transmission state.
- ⁇ -- to define and show examples.
- Parameters ( ⁇ 1, ⁇ 2, ' ⁇
- the setting of (1) higher layer control information is the parameter value information between the radio resource control unit 16 of the fixed station and the radio resource control unit 35 of the mobile station 1.
- (2) Parameter values are stipulated in the standard document, and mobile station 1 autonomously sets it based on control from the transmission / reception channel monitoring unit 41 or operation status notification (trigger) exchange. Various methods are applicable.
- Figure 10 (B) shows the transmission interval between UL-DPCCHs that are temporally adjacent when the UL-DPCCH transitions to the non-continuous transmission state from the point when the packet data enters the non-transmission (or non-reception) state.
- multiple parameters (Al, A2,..., Bl, B2,7) are defined.
- the parameter values are set in the same way as the parameters in Fig. 10 (A).
- Multiple parameters (B1, ⁇ 2,...) Can be used in various ways, such as (1) controlled by the base station controller 3, (2) controlled by the base station 2, (3) controlled by both. is there.
- the control channel (DPCCH) power that has been continuously transmitted except the specific non-transmission setting has been changed from the continuous transmission state. Since the transmission interval of the control channel (DPCCH) is gradually changed when shifting to the discontinuous transmission state, it is possible to suppress sudden changes in uplink DPCCH reception at fixed stations. Become. As a result, it is possible to suppress an abrupt deterioration in the reference phase detection (or synchronization tracking) performance on the receiving side in the fixed station. In addition, since rapid fluctuations in the reference phase detection performance are suppressed, it is possible to suppress fluctuations in the demodulation performance of other uplink channels.
- the specific non-transmission setting for example, Cmp ressed mode setting
- the reception state of DPCCH is performed by, for example, reception power detection, and when discontinuous reception is detected, mobile station 1 is notified of transition (or triggered) to the discontinuous state.
- the fixed station side can also make the determination.
- UL-DPCCH is transmitted immediately after the packet data transmission stop (transmission stop) or reception stop (or reception stop).
- a time offset by setting a timer or specifying a period. For example, even if HS-DSCH packet data is not transmitted (stopped or stopped) on the downlink, it is necessary to transmit the reception judgment result (HA RQ-ACK) for the packet data from the mobile station 1 using HS-DPCCH. Therefore, after the time required for mobile station processing has elapsed, the packet data reception decision result (HARQ—ACK) is transmitted, and the state transits to the discontinuous transmission state.
- HARQ—ACK packet data reception decision result
- the present invention may be applied to the opposite case. . Or, it can be applied to both (1) transition from the continuous transmission state to the non-continuous transmission state, and (2) transition from the non-continuous transmission state to the continuous transmission state.
- Embodiment 2 the transmission cycle of the uplink DPCCH channel is gradually changed. However, as shown in Fig. 11, the transmission cycle of HS_DPCCH can also be applied separately.
- the period parameter setting of the conventional release is based on the notification of the upper layer control information (RRC signaling) from the fixed station side
- transmission control is performed based on the second period parameter.
- the transmission interval of the transmission power control channel used for transmission power control is controlled according to the transmission (or reception) status of the dedicated packet channel monitored by the transmission / reception channel monitoring unit 41.
- the transmission power margin value of the packet dedicated channel is set in consideration of the transmission power setting value of the transmission power control channel for which the transmission mode is set by the UL-DPCCH processing unit 32. Calculated and dedicated for packets transmitted within the range of transmission power control channel and transmission power margin The channels are multiplexed.
- E-DCH shifts to a higher layer packet data transmission state.
- the transmission power margin value of mobile station 1 is measured (estimated and calculated) at the time prior to the start of data transmission (resume).
- the outline of the third embodiment is not related to CQI (HS-DPCCH) transmission, and a description thereof will be omitted.
- FIG. 12 is an explanatory diagram showing an example of the transmission status of uplink DPCCH (UL-DPCCH) and E-DCH channel (E-DPD CH / E-DPCCH).
- the vertical axis in Fig. 12 represents the power of each channel, and the horizontal axis represents time.
- Fig. 12 shows the state of E-DCH packet data non-transmission state power transitioning to the E-DCH packet data transmission state.
- UL-DPCCH In the packet data non-transmission state, UL-DPCCH is transmitted with low transmission power, or part of it is not transmitted, and only UL-DPCCH is transmitted (or partial transmission). Also, E-DCH data is transmitted. Information about the state of mobile station 1 (referred to as SI (scheduling 'information) in the W-CDM A standard) is transmitted.
- SI scheduling 'information
- E_DPDCH E_DCH
- SI mobile station status information
- the transmission of mobile station state information may be periodic or may be based on an event of transmission data generation. However, when the problem is to reduce uplink interference in a non-packet transmission state, the mobile station state information (SI) The status information (SI) should not be transmitted.
- the mobile station status information can include various types of information such as packet data transmission buffer status information and transmission power margin status information.
- the first transmission power margin value is The difference between “total transmission power” and “total power of parallel transmission channels other than E_DPDCH”, (2)
- the second transmission power margin value is used as the second transmission power margin to determine scheduling in the E—DCH processing unit 15 of the fixed station. It is necessary to obtain the difference between the “maximum total transmission power of the station” and the “UL_DPCCH transmission power”.
- the information on the second transmission power margin value is transmitted on the E-DPDCH as mobile station status information (SI).
- SI mobile station status information
- the mobile station 1 should be implemented based on the measurement (estimation and calculation) at the same reference timing. Is also possible.
- the transmission power margin value of mobile station 1 needs to be obtained before the E-TFC determination processing.
- the reference timing for measuring (estimating and calculating) the transmission power margin value overlaps with the UL—DPCCH low transmission power (or discontinuous transmission) timing, a large estimate of the transmission power margin value will be required. Therefore, a higher E-DCH data transmission rate will be selected.
- the signal-to-noise ratio (SIR) necessary for the demodulation operation in the separation unit 21 of the fixed station is insufficient, and retransmission from the mobile station 1 is necessary, so that the throughput of the communication system is reduced.
- the movement is based on the UL_D PCCH transmission power according to the normal (or conventional) DPCCH transmission power setting method. Obtain the transmission power margin value of station 1.
- E-TFC packet data transmission rate
- the transmission power is reduced with the transmission power of uplink DP CCH (UL-DPCCH) reduced.
- the transmission power setting of UL—DPCC H may be transmitted with the conventional (normal) specified value. Les.
- the UL-DPCCH processing unit 32 Based on the monitoring result of the E-DCH data generation status in the transmission / reception channel monitoring unit 41 of the mobile station 1, the UL-DPCCH processing unit 32 multiplexes control information (not shown) that increases the transmission power. Output to.
- the transmission power margin value of the dedicated packet channel is calculated in consideration of the transmission power setting value of the transmission power control channel for which the transmission mode is set by the UL-DPCCH processing unit 32, and the transmission power margin value is transmitted.
- the power shown for multiplexing power-dedicated channels and packet-dedicated channels transmitted within the range of the transmission power margin value In this fourth embodiment, transmission of a packet-dedicated channel monitored by the transmission / reception channel monitoring unit 41 is performed. Depending on the situation (or reception), combinations of channel formats of transmission power control channels used for transmission power control are determined, and a plurality of transmission power control channels are grouped in a plurality of channel formats.
- a plurality of channel formats for transmitting data transmission rate setting information are grouped together to form a group, and different information is transmitted according to a combination pattern of the channel formats.
- UL—DPCCH uplink DPCCH
- FIG. 14 is an explanatory diagram showing DPCCH transmission in the radio communication system according to Embodiment 4 of the present invention.
- the vertical axis in Fig. 14 represents the transmission channel (or transmission power), the horizontal axis represents time, and the UL_DPCCH transmission timing is shown conceptually.
- FIG. 14 an example is shown in which DPCCH is transmitted in a batch of three slots and the format of the first and third slots is the same.
- the slot format in Fig. 14 may be defined in the conventional standard or newly defined.
- FIG. 15 is an explanatory diagram showing a specific example of UL-DPCCH transmission timing in FIG. The
- the format is selected by the UL-DPCCH processing unit 32 based on the transmission / reception status of packet data in the transmission / reception channel monitoring unit 41.
- the fixed station corresponding to the present invention can restore the notified other information based on the received combination of DPCCH formats.
- the fixed station that supports only the conventional release receives the format with the TTC column. It cannot be demodulated.
- the uplink DPCCH is continuously demodulated as being continuously transmitted, if the non-transmission period of DPCCH and the transmission period of another format are about several slots long, the DPCCH of the fixed station Since reception demodulation performance and synchronization tracking performance are not significantly degraded, backward compatibility can be ensured.
- a group is formed by using a plurality of channel formats for data transmission rate setting information transmission, and different control information is provided by a combination of channel formats. Since transmission is possible, there is an effect that an additional notification channel and signal transmission operation are not required for synchronization between the transmission state of the mobile station 1 and the reception state of the fixed station.
- DPCCH is the minimum required channel to maintain a physical radio link. For this reason, a fixed station that implements the standard specifications basically needs to always receive the DPCCH (except for the transmission gap setting called Compressed mode), so it is necessary to provide a receiver for further information and state synchronization notification. This has the effect of preventing the configuration of the fixed station from becoming complicated.
- the format (number) is not limited to the format (number) shown in the figure.
- a modification of the fourth embodiment will be described with reference to FIGS. 16 and 17.
- the uplink DPCCH is transmitted as a group of a plurality of slots, and the axis (I and Q) of the complex signal (S) to be transmitted is changed.
- FIG. 17 is a configuration diagram showing an operation principle of the spreading unit 51a of the mobile station 1 for performing the DPCCH transmission shown in FIG.
- the multipliers 63i and 63q and the channel amplitude coefficient are distinguished by attaching I (i) or Q (q).
- the additional coefficient values are described as different ones (A (I), A (Q)), but the same parameters may be used.
- the DPCCH signal is multiplied by the channel amplitude coefficient in the multipliers 61 and 62 on the I-axis side in the same manner as the DPCCH process in FIG.
- the multiplier 63i multiplies the additional coefficient (A (1)), so that the output signal of the multiplier 63i is input to the adder 64 and becomes an I-axis component.
- Switching between I axis and Q axis is performed by UL-DPCCH processing unit 32. Alternatively, it is performed in the multiplexing unit 36 under the direction of the UL-DP CCH processing unit 32.
- a fixed station conforming to the conventional standard recognizes the received uplink DPCCH as the Q axis (reference phase), and cannot receive and demodulate the I-axis transmission component of the DPCCH.
- Q axis is conventional Use the same format as the standard, and use the newly defined format for the I axis.
- the mobile station is communicating with at least one conventional base station in the uplink, use only the Q axis for transmission.
- ConCon mode When communicating with only a base station compatible with the present invention (ConCon mode), various combinations such as transmission using the I axis are possible.
- DPDCH When DPDCH is not transmitted as mobile station setting or mobile station capability, it is not necessary to transmit information bits such as TFC, but when using it for notification, dummy bits are inserted. You may do it.
- FIG. 18 is an explanatory diagram showing an example of the correspondence between the new format (number) of DPCCH and the new format (number) for E-DPCCH.
- the new DPCCH format defines the TFC and FBI fields as non-transmission (DTX) while maintaining the order and length of PILOT, TFC, and FBI in the previously released DPCCH format.
- the new E-DPCCH format is transmitted in the non-transmission (DTX) area of the new DPCCH format, and the other areas are non-transmission (DTX).
- the extension is possible even when the downlink packet (HS-DSCH, HS-PDSCH) is not transmitted and the uplink packet (E-DCH, E-DPDCH) is transmitted.
- ConCon mode The case where packets are transmitted only on one of these links is also defined as ConCon mode, and uplink DPCCH transmission is controlled.
- E When transmitting DCH packet and using DPCCH format with conventional TFC or FBI bit field, use TFC or FBI bit non-transmission time, and create a new E- Send E-DPCCH information in DPCCH format.
- DPCCH is partially transmitted in the middle of the transmission slot. This prevents the occurrence of EMC problems such as so-called hearing aids.
- E-DPCCH format in Figure 18 is the power defined in relation to the DPCCH format of the previous release specification.
- a new DPCCH format is newly defined and related to the new E- DPCCH format. You may create a format.
- the E-DPCCH may be extended using the format shown in FIG.
- the channel format combination of the transmission power control channel used for transmission power control is changed according to the transmission (or reception) status of the packet dedicated channel monitored by the transmission / reception channel monitoring unit 41.
- the power S shown in FIG. The link quality information is repeatedly transmitted a plurality of times.
- the fifth embodiment when transmitting the packet channel control channel, it is essential to repeat the packet channel control channel by dividing it into a plurality of times.
- the HSDPA channel is set, and the data packet (HS-PDSCH) and packet transmission control information (HARQ-ACK) are not transmitted (for example, When ConCon mode, UL—inactive state, DL—inactive state), repeat transmission of link quality information (CQI) transmitted on the uplink control channel (HS—DPCCH) is mandatory.
- HS-PDSCH data packet
- HARQ-ACK packet transmission control information
- CQI link quality information
- CQI transmission is performed periodically regardless of whether or not downlink packet data is transmitted, except in specific cases (ie, when the optional specifications are applied). It is performed within a unit time (called subframe in W-CDMA).
- subframe in W-CDMA since the DPCCH transmission is also required for demodulation at the fixed station, the above two transmissions are always parallel transmissions.
- Parallel transmission can be achieved by increasing the peak power of the transmitted signal or changing the transmission power (PAR: Paek to The average ratio will increase. This means an increase in the radio resource management margin.
- CQI repeat transmission is an optional specification and is not essential, so peak power increases and transmission power fluctuations are large.
- the link quality information is repeatedly transmitted a plurality of times.
- the transmission timing of the transmission power control channel is matched with the transmission timing of the packet dedicated channel.
- control of the old release is performed.
- the transmission control of the channel is set to transmission / non-transmission control according to the transmission control timing of the control channel for the new release packet.
- FIG. 19 is an explanatory view showing DPCCH transmission timing of the radio communication system according to Embodiment 6 of the present invention.
- the vertical axis in Fig. 19 represents mobile station transmission power (or channel power), and the horizontal axis represents time. is doing.
- HS DPCCH is not transmitted (DTX) ⁇ HARQ—ACK transmission ⁇ CQI transmission ⁇ non-transmission (HARQ—ACK non-transmission: DTX) ⁇ CQI transmission ⁇ non-transmission (DTX) Furthermore, DPCCH transmission is controlled according to the HS-DPCCH transmission timing.
- the DPCCH is partially transmitted in some transmission timing intervals in accordance with the HS-DPCCH transmission.
- the UL-DPCCH processing unit 32 of the mobile station 1 obtains packet transmission / reception status information from the transmission / reception channel monitoring unit 41, and in accordance with the timing at which HS_DPCCH is transmitted in the uplink, Or it controls to transmit a part.
- DPCCH is assumed to be transmitted continuously for closed-loop transmission power control.
- the transmission control (non-transmission) of DPCCH is performed in accordance with the HS-DPCCH transmission (or transmission timing standard). There is an effect that link interference can be further reduced.
- Embodiment 6 the power that is partially transmitted in the DPCCH slot before and after the DPCCH transmission, S, and the whole slot is transmitted in concatenation with the DPCCH, so the slot as a whole Non-transmission operation for a time shorter than the length can be avoided, and the occurrence of EMC problems can be avoided.
- HS the power S that partially transmits DPCCH at both the start and stop of transmission of DPCCH, and partial transmission of only one DP CCH. If you want to,
- the entire DPCCH slot is transmitted prior to the HS_D PCCH transmission.
- the DPCCH is received in advance by the receiving unit 20 of the fixed station prior to receiving the HS-DPCCH.
- the DPCCH transmission prior to the HS-DPCCH may be transmitted over a plurality of slot lengths according to the channel usage status, etc., and may not be transmitted simultaneously when the HS-DPCCH transmission is stopped.
- a new format in which the order of the pilot signal, transmission power control signal (TPC), feedback signal (FBI), etc. transmitted using the conventional DPCCH is replaced is newly added. Furthermore, it is used depending on the time difference between HS-DPCCH and DPCCH. You can change the DPCCH format. Which DPCCH format is used is notified to mobile station 1 as higher layer control information (RRC signaling) when DPCCH and HS—DPCCH are set. In the case of partial transmission, it is also possible to define a new format in which DPCCH transmission elements may be replaced according to the timing difference.
- RRC signaling higher layer control information
- DPCCH transmission control (mode) change notification signal synchronization trigger for transmission / reception state between the mobile station and the fixed station
- Embodiments 1 to 6 described above the case where the radio communication system is applied to the frequency division multiplexing (FDD) scheme of the W_CDMA scheme has been described, but the scope of the idea of the present invention is not limited.
- the present invention can be applied to a wireless communication system such as time division multiplexing (eg, TDD system, CDMA2000 system), and is not limited to the above-described Embodiments 1 to 6.
- the radio communication system according to the present invention can be applied to mobile stations, fixed stations, and radio communication systems in general that operate in mobile communication systems including cellular communication systems.
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Abstract
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US12/159,480 US20100220606A1 (en) | 2006-03-20 | 2006-03-20 | Mobile station, fixed station, and radio communication system |
JP2008506107A JPWO2007108097A1 (ja) | 2006-03-20 | 2006-03-20 | 移動局、固定局及び無線通信システム |
EP06729540A EP1998483A1 (en) | 2006-03-20 | 2006-03-20 | Mobile station, fixed station, and radio communication system |
PCT/JP2006/305572 WO2007108097A1 (ja) | 2006-03-20 | 2006-03-20 | 移動局、固定局及び無線通信システム |
CNA2006800500400A CN101366218A (zh) | 2006-03-20 | 2006-03-20 | 移动站、固定站及无线通信系统 |
Applications Claiming Priority (1)
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PCT/JP2006/305572 WO2007108097A1 (ja) | 2006-03-20 | 2006-03-20 | 移動局、固定局及び無線通信システム |
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WO2007108097A1 true WO2007108097A1 (ja) | 2007-09-27 |
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US (1) | US20100220606A1 (ja) |
EP (1) | EP1998483A1 (ja) |
JP (1) | JPWO2007108097A1 (ja) |
CN (1) | CN101366218A (ja) |
WO (1) | WO2007108097A1 (ja) |
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KR100895166B1 (ko) | 2006-04-21 | 2009-05-04 | 삼성전자주식회사 | 무선 통신 시스템에서의 채널품질정보 송수신 방법 및 장치 |
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EP2123095B1 (en) * | 2006-12-01 | 2010-06-30 | Interdigital Technology Corporation | Method and apparatus for controlling discontinuous transmission and reception |
TW201251496A (en) * | 2006-12-28 | 2012-12-16 | Interdigital Tech Corp | Efficient uplink operation with high instantaneous data rates |
JP5080645B2 (ja) * | 2007-07-04 | 2012-11-21 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | ユーザ端末の電力不足表示 |
CN102111213B (zh) * | 2009-12-25 | 2013-08-07 | 中兴通讯股份有限公司 | 一种进行译码处理的方法及装置 |
CN102237991B (zh) * | 2010-04-30 | 2016-08-24 | 北京三星通信技术研究有限公司 | 在tdd系统中发送ack/nack信息的方法 |
CN102137509B (zh) * | 2010-11-08 | 2013-10-09 | 华为技术有限公司 | 信道传输状态的控制方法及装置 |
KR20140054220A (ko) * | 2011-08-12 | 2014-05-08 | 알까뗄 루슨트 | 범용 이동 통신 시스템들에서 업-링크 자원들의 공유 |
RU2017113718A (ru) * | 2014-09-24 | 2018-10-24 | Хуавей Текнолоджиз Ко., Лтд. | Устройство связи и способ прерывистой передачи |
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Also Published As
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CN101366218A (zh) | 2009-02-11 |
US20100220606A1 (en) | 2010-09-02 |
EP1998483A1 (en) | 2008-12-03 |
JPWO2007108097A1 (ja) | 2009-07-30 |
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