WO2006118124A1 - 無線通信装置および無線通信方法 - Google Patents
無線通信装置および無線通信方法 Download PDFInfo
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- WO2006118124A1 WO2006118124A1 PCT/JP2006/308690 JP2006308690W WO2006118124A1 WO 2006118124 A1 WO2006118124 A1 WO 2006118124A1 JP 2006308690 W JP2006308690 W JP 2006308690W WO 2006118124 A1 WO2006118124 A1 WO 2006118124A1
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- WIPO (PCT)
- Prior art keywords
- wireless communication
- subchannels
- transmission
- timing
- channel
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
Definitions
- the present invention relates to a wireless communication device and a wireless communication method.
- OFDM Orthogonal Frequency Division Multiplexing
- Non-Patent Document 1 Nagata et al., “Effect of frequency packet scheduling on downlink Spread OFDM broadband packet wireless access”, IEICE technical report RCS2004-228, November 2004
- control information such as scheduling information and modulation parameters is transmitted from the base station prior to data packet transmission.
- This control information needs to be transmitted immediately before the transmission of the data packet in order to make the adaptive control follow the propagation path fluctuation that fluctuates at high speed.
- a radio communication mobile station apparatus (hereinafter simply referred to as a mobile station) demodulates and decodes a data packet using a modulation parameter of the data packet obtained by demodulating / decoding control information.
- low-latency transmission is achieved.
- the mobile station needs to transmit a response such as ACK (ACKnowledgement) or NACK (Negative ACKnowledgement) to the received data packet in a short time (eg, within several TTIs).
- An object of the present invention is to provide a wireless communication device and a wireless communication method capable of reducing the circuit scale of the wireless communication device on the data receiving side.
- the wireless communication device of the present invention is a wireless communication device that divides a plurality of subcarriers constituting a multicarrier signal into a plurality of subchannels and performs adaptive control for each of the plurality of subchannels.
- a configuration is provided that includes a timing setting unit that sets different transmission timings for a plurality of subchannels, and a transmission unit that transmits the multicarrier signal including the plurality of subchannels after the transmission timing is set.
- FIG. 1 is a block diagram showing a configuration of a radio communication apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is an explanatory diagram of timing control according to Embodiment 1 of the present invention.
- FIG. 3 is an explanatory diagram of reception processing of the mobile station according to Embodiment 1 of the present invention.
- FIG. 4 is a block diagram showing a configuration of a wireless communication apparatus according to Embodiment 2 of the present invention.
- FIG. 5 is an explanatory diagram of timing control according to the second embodiment of the present invention.
- FIG. 6 is an explanatory diagram of transmission power control according to Embodiment 2 of the present invention.
- FIG. 1 shows the configuration of radio communication apparatus 100 according to the present embodiment.
- Radio communication apparatus 100 divides a plurality of subcarriers constituting an OFDM symbol, which is a multicarrier signal, into a plurality of subchannels, and performs adaptive control such as scheduling and adaptive modulation for each of the plurality of subchannels.
- adaptive control such as scheduling and adaptive modulation for each of the plurality of subchannels.
- the encoding / modulation units 102-1 to 102-m and the frame forming units 103-1 to 103-m including the unit 22 are provided for the number m of subchannels.
- the demodulation / decoding units 113-1 to 113-n including the demodulation unit 31 and the decoding unit 32 are provided by the number n of mobile stations with which the radio communication apparatus 100 can communicate.
- Encoding 'modulation section 101-1 ⁇ In L01-m, encoding section 11 performs a modulation process on the control information output for each subchannel from adaptive control section 114, and performs modulation.
- the unit 12 performs a modulation process on the encoded control information.
- the control information is information necessary for adaptive control, including MCS (Modulation and Coding Scheme) information indicating the modulation scheme and coding rate of transmission data for each subchannel, and to which subcarrier each transmission data is assigned. It includes allocation information indicating whether it is allocated. Note that the coding rate in the encoding unit 11 and the modulation scheme in the modulation unit 12 are determined in advance.
- encoding section 21 performs encoding processing such as turbo code on transmission data for each subchannel, and modulating section 22 performs encoding.
- the subsequent transmission data is modulated using a modulation method such as QPSK or 16QAM.
- the coding rate and modulation scheme at this time follow the MCS information input from adaptive control section 114.
- the frame forming portion 103-1 to 1 03 m time-multiplexes pilot, control information, and transmission data in that order.
- Subcarrier allocation section 104 allocates subcarriers instructed by adaptive control section 114 to each frame formed by frame formation sections 103-1 to 103-m.
- Timing control section 105 sets different frame timing offsets for each frame (a plurality of frames formed for each of subchannels l to m) input from subcarrier allocation section 104. That is, the timing control unit 105 performs timing control for setting different transmission timings for the subchannels 1 to m. With this control, each frame of each subchannel is input to an IFFT (Inverse Fast Fourier Transform) unit 10 ⁇ in parallel at m different timings.
- IFFT Inverse Fast Fourier Transform
- IFFT section 106 performs an IFFT on subcarriers to which each frame after timing control is assigned to obtain an OFDM symbol.
- GI adding section 107 sets the GI (Guard Interval) by attaching the same signal as the tail part of the OFDM symbol to the head of the OFDM symbol.
- Transmission radio processing section 108 performs transmission processing such as DZA conversion, amplification and up-conversion on the OFDM symbol after GI addition, and transmits the result from antenna 109 to the mobile station. That is, transmission radio processing section 108 transmits OFDM symbols including subchannels l to m set at different transmission timings by timing control section 105 to the mobile station.
- radio communication apparatus 100 performs adaptive control for each subchannel in which a plurality of subcarriers are bundled, and transmits data.
- reception radio processing section 110 receives n OF DM symbols simultaneously transmitted from a maximum of n mobile stations via antenna 109, down-converts, DZA conversion, etc. for these OFDM symbols Receive processing.
- GI removal section 111 removes OFDM symbol power GI after reception processing.
- An FFT (Fast Fourier Transform) unit 112 performs FFT on the OFDM symbol after GI removal to obtain a signal for each mobile station multiplexed on the frequency axis.
- each mobile station transmits signals using mutually different subcarriers or mutually different subchannels, and each mobile station's signal has a reception quality information for each subchannel reported for each mobile station power. It is included.
- Each mobile station measures the reception quality for each subchannel.
- the received SNR, received SIR, received SINR, received CINR, received power, interference power, bit error rate, throughput, and MCS that can achieve the specified error rate can be used.
- the reception quality information may be expressed as CQI (Channel Quality Indicator), CSI (Channel State Information), or the like.
- demodulation section 31 performs modulation processing on the signal after FFT
- decoding section 32 performs decoding processing on the demodulated signal.
- received data is obtained.
- the reception quality information for each subchannel in the received data is input to the adaptation control unit 114.
- Adaptive control section 114 performs adaptive control based on reception quality information for each subchannel reported from each mobile station. That is, the adaptive control unit 114 selects an MCS that can satisfy a desired error rate for the encoding / modulation units 102-1 to 102-m based on the reception quality information for each subchannel ( MCS selection) is performed for each subchannel, and MCS information is output.
- the subcarrier allocation unit 104 uses a scheduling algorithm such as the Max SIR method or the Proportional Fairness method to assign each transmission data to which subcarrier. Frequency scheduling for determining whether to apply is performed for each subchannel.
- adaptive control section 114 generates control information including MCS information and allocation information for each sub-channel, and outputs the information to corresponding encoding / modulation sections 101-1 to L01-m.
- the mobile station can perform reception processing as follows.
- the reception processing of the mobile station will be described with reference to FIG.
- the transmission signal from the base station is omitted from the four subchannels.
- the data in each subchannel needs to be decoded within 1 TTI after being received by the mobile station.
- the mobile station sequentially performs the following processing for each of the subchannels 1 to 4.
- the mobile station stores the pilot (CPICH) and control information (HS—SCCH) in the memory for the received baseband signal (process (1)).
- the mobile station After receiving the pilot and control information, the mobile station performs channel estimation and signal correction on the control information using the channel estimation value (Process (2)).
- the mobile station demodulates and decodes the corrected control information (process (3)).
- the circuit (nodware) required to perform a series of processes (1) to (3) is as follows: Each one is enough.
- the mobile station sequentially stores the data (HS—DSCH) in memories # 1 to # 3 (processing)
- the mobile station performs a data reception process according to the MCS information included in the decoded control information (process (5)).
- the mobile station first performs signal correction on the data using the propagation path estimation value.
- the mobile station performs repetition or symbol synthesis on the data.
- the mobile station performs a dinter leave on the data.
- the mobile station then performs turbo decoding on the data.
- two decoding circuits # 1 and # 2 are used for turbo decoding in order to complete decoding within 1 TTI, which is the decoding time limit. Therefore, three memories are required to perform process (4), and one propagation path estimation and signal correction circuit, levitation synthesis circuit, and din-leave circuit are required to perform process (5). Only two turbo decoding circuits are enough.
- the mobile station since the mobile station receives the frames of each subchannel at different timings, reception processing is performed at different timings for a large number of frames. Therefore, the circuit scale can be reduced.
- the reception quality information of each subchannel is fed back to the mobile station base station. If the base station power is also transmitted at the same timing in all subchannels as in the conventional case, adaptive control is performed. In order to make the control delay in the same in all subchannels, the reception quality information needs to be fed back simultaneously in all subchannels.
- the feedback timing of the reception quality information is also different for each subchannel. Therefore, according to the present embodiment, uplink feedback information does not concentrate in time, and interference caused by feed knock information on uplink data can be reduced.
- the required maximum transmission power increases when a mobile station multiplexes multiple pieces of feedback information and transmits them simultaneously. The required maximum transmission power can be reduced by transmitting each piece of feedback information at different timings as described above. Can do.
- wireless communication on the data reception side is performed by transmitting each frame for each base station 1S subchannel, which is a wireless communication device on the data transmission side, at different timings. It becomes possible to reduce the circuit scale of the mobile station as a device.
- transmission power control is performed on each frame for each subchannel.
- different frame timings are set for each cell.
- FIG. 4 shows the configuration of radio communication apparatus 200 according to the present embodiment.
- the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
- transmission power control sections 201-1 to 201-m are provided by the number m of subchannels, and each frame into which frame forming sections 103-l to 103-m are also input. Pilot (CPICH), control information (HS—SCCH), and transmission power of transmission data (HS—DSC H) are controlled.
- the transmission power control units 201-1 to 201-m set the transmission power by setting the power ratio of CPIC H: HS—SCCH: HS DSCH to 2: 2: 1.
- the transmission power control sections 201-1 to 201-m set the transmission power of the pilot channel to be higher than the transmission power of the data channel.
- the transmission power control sections 201-1 to 201 m set the transmission power of the control channel to a power higher than the transmission power of the data channel.
- Timing information instructing a radio network controller (RNC) power is also input to the timing control unit 202, and the timing control unit 202 performs the timing control according to the timing information.
- a different frame timing offset is indicated for each cell. Therefore, in the timing control unit 202, a transmission timing different from the transmission timing set in the wireless communication apparatus of the adjacent cell is set for each frame.
- the timing offset is set in the radio communication device 200 of the cell 1 as shown in FIG. 2 above, and the radio communication device 200 of the cell 2 adjacent to the cell 1 is set as shown in FIG. An offset is set.
- the timing offset for each subchannel differs for each cell, it is possible to avoid the overlap of the transmission timing of the pilot of the own cell and the transmission timing of the pilot of the adjacent cell. As a result, it is possible to prevent both pilots from interfering with each other in the mobile station located near the cell boundary. By preventing pilot interference in this way, propagation path estimation accuracy is improved in the mobile station, and as a result, throughput is improved.
- each number indicates a transmission power value.
- the maximum power (total transmission power) that can be transmitted per lOF DM symbol is 10.
- the total transmission power is 10, and when an lOFDM symbol is configured with 8 subchannels as shown in FIG.
- the power ratio of CPICH: HS—SCCH: HS—DSCH 2: 2: 1 can be set.
- CPICH transmission power can be set to 2
- HS-DSCH transmission power can be set to 1.
- the transmission power of the pilot (CPICH) for performing channel estimation is set to a power larger than the transmission power of data (HS—DSC H) as in this embodiment.
- the error rate is lower with this setting, and as a result, the throughput is improved.
- the frame timing is different for each subchannel, that is, the transmission timings of the pilot channel, the control channel, and the data channel are different for each subchannel, so that the total transmission power is
- the power ratio as described above that provides the best error rate characteristics between the pilot channel, the control channel, and the data channel, so that the throughput can be improved.
- the signal described by the base station (that is, the signal transmitted by the mobile station on the uplink) is transmitted by the OFDM method. It may be transmitted by a transmission method other than the OFDM method, such as a carrier method or a CDMA method.
- the timing control units 105 and 202 are connected to the subcarrier allocation unit 1.
- the force timing control units 105 and 202 described for the configuration provided in the subsequent stage of 04 may be provided in the previous stage of the subcarrier allocation unit 104.
- the present invention has been described in the case where the present invention is applied to a subchannel.
- the present invention may be similarly applied to a subcarrier. That is, in a wireless communication apparatus that performs adaptive control for each subcarrier, different transmission timings may be set for a plurality of subcarriers.
- different timing offsets may be set for each subframe or for each slot in the same manner as described for the case of setting different timing offsets for each frame.
- the subchannel is described as a channel in which a continuous subcarrier force is also configured.
- the subchannel may also be configured in a discontinuous subcarrier force.
- a subchannel may be referred to as a subcarrier block, a subband, or a chunk.
- a mobile station may be referred to as a UE, a base station apparatus as a Node B, and a subcarrier as a tone.
- adaptive control adaptive transmission power control, adaptive spreading factor control, and the like may be performed in addition to scheduling and adaptive modulation.
- an adaptive control you can perform a combination of several of these, or you can perform only one of them, V!
- pilot channel for example, in the 3GPP standard, in addition to CPICH, P—CP ICH (Primary Common Pilot channel), S—PICH (secondary Common Pilot Channel), DPCCH (Dedicated Physical Control Channel) Dedicated Pilot Channel, etc.
- control channel for example, in the 3GPP standard, in addition to HS-SCCH, DCC H (Dedicated Pnysical Control channel), P-CCPCH (Primary and ommon control Physical Channel), S-C and PCH ( Secondary Common Control Physical Channel) and D PCCH (Dedicated Physical Control Channel).
- DCC H Dedicated Pnysical Control channel
- P-CCPCH Primary and ommon control Physical Channel
- S-C and PCH Secondary Common Control Physical Channel
- D PCCH Dedicated Physical Control Channel
- DSCH Downlink Shared Channel
- DPCH Dedicated Physical Channel
- DCH Dedicated channel
- each functional block used in the description of each of the above embodiments is typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them. Here, it is sometimes called IC, system LSI, super LSI, or ultra LSI, depending on the difference in power integration.
- circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible.
- An FPGA Field Programmable Gate Array
- reconfigurable 'processor that can reconfigure the connection and settings of circuit cells inside the LSI may be used.
- the present invention can be applied to mobile communication systems and the like.
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Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06732346.9A EP1865637A4 (en) | 2005-04-28 | 2006-04-26 | APPARATUS AND METHOD FOR WIRELESS COMMUNICATION |
JP2007514754A JP4926047B2 (ja) | 2005-04-28 | 2006-04-26 | 無線通信装置および無線通信方法 |
CN200680014236.4A CN101167283B (zh) | 2005-04-28 | 2006-04-26 | 无线通信装置和无线通信方法 |
US11/912,636 US8320356B2 (en) | 2005-04-28 | 2006-04-26 | Wireless communication apparatus and wireless communication method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-133721 | 2005-04-28 | ||
JP2005133721 | 2005-04-28 |
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WO2006118124A1 true WO2006118124A1 (ja) | 2006-11-09 |
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PCT/JP2006/308690 WO2006118124A1 (ja) | 2005-04-28 | 2006-04-26 | 無線通信装置および無線通信方法 |
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US (1) | US8320356B2 (ja) |
EP (1) | EP1865637A4 (ja) |
JP (1) | JP4926047B2 (ja) |
KR (1) | KR101214102B1 (ja) |
CN (1) | CN101167283B (ja) |
WO (1) | WO2006118124A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008078830A1 (en) * | 2006-12-27 | 2008-07-03 | Sharp Kabushiki Kaisha | Apparatuses and methods for transmitting a transmission time interval signal with staggered reference signals |
JP2008172377A (ja) * | 2007-01-09 | 2008-07-24 | Ntt Docomo Inc | Ofdm方式を利用する移動通信システムで使用される送信装置、受信装置及び方法 |
JP2008205536A (ja) * | 2007-02-16 | 2008-09-04 | Sanyo Electric Co Ltd | 送信方法、通知方法、端末装置および基地局装置 |
JPWO2007020995A1 (ja) * | 2005-08-19 | 2009-03-26 | パナソニック株式会社 | 無線通信移動局装置、無線通信基地局装置およびcqi報告方法 |
JP2010279077A (ja) * | 2010-08-31 | 2010-12-09 | Ntt Docomo Inc | Ofdm方式で変調された送信信号を受信する受信装置及び受信方法 |
WO2011135850A1 (ja) * | 2010-04-30 | 2011-11-03 | パナソニック株式会社 | 基地局装置、通信端末装置、送信方法及び復調方法 |
JP2014135761A (ja) * | 2014-04-04 | 2014-07-24 | Sharp Corp | 通信システム、移動局および信号処理方法 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100930716B1 (ko) * | 2007-10-17 | 2009-12-09 | 한국전자통신연구원 | 신호 전송 방법 및 신호 수신 방법 |
TWI405445B (zh) * | 2008-08-15 | 2013-08-11 | Innovative Sonic Ltd | 處理一傳輸時間間隔集束模式的方法及通訊裝置 |
IL194097A (en) * | 2008-09-15 | 2012-05-31 | Mariana Goldhamer | Activation of a wireless subscription terminal in a number of cells based on OFDMA |
US9137764B2 (en) * | 2009-03-17 | 2015-09-15 | Htc Corporation | Method of managing timing alignment functionality for multiple component carriers and related communication device |
CN101646234A (zh) * | 2009-09-01 | 2010-02-10 | 中兴通讯股份有限公司 | 一种定时提前量的获取方法 |
CN102440048A (zh) * | 2009-10-20 | 2012-05-02 | 华为技术有限公司 | 对组成载波进行定时调整的方法、基站及系统 |
US9516609B2 (en) | 2010-11-08 | 2016-12-06 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9007888B2 (en) | 2010-11-08 | 2015-04-14 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9084207B2 (en) * | 2010-11-08 | 2015-07-14 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US9055604B2 (en) | 2012-02-08 | 2015-06-09 | Qualcomm Incorporated | Method and apparatus for E-TFC selection for uplink MIMO communication |
US9380490B2 (en) | 2010-11-08 | 2016-06-28 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US8953713B2 (en) | 2010-11-08 | 2015-02-10 | Qualcomm Incorporated | System and method for uplink multiple input multiple output transmission |
US11291022B2 (en) * | 2016-07-26 | 2022-03-29 | Ntt Docomo, Inc. | User terminal and radio communication method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06334573A (ja) * | 1993-05-26 | 1994-12-02 | Hitachi Ltd | 放送方式及びこれを用いる放送送受信システム |
JP2001103029A (ja) * | 1999-09-28 | 2001-04-13 | Sanyo Electric Co Ltd | ディジタル放送受信機 |
JP2002016577A (ja) * | 2000-06-28 | 2002-01-18 | Sony Corp | 通信方法および通信装置 |
JP2003179522A (ja) * | 2001-12-07 | 2003-06-27 | Matsushita Electric Ind Co Ltd | マルチキャリア送受信装置、マルチキャリア無線通信方法、およびマルチキャリア無線通信用プログラム |
JP2003244763A (ja) * | 2002-02-14 | 2003-08-29 | Ntt Docomo Inc | 移動通信システム、チャネル同期確立方法、及び移動局 |
JP2005117625A (ja) * | 2003-09-16 | 2005-04-28 | Matsushita Electric Ind Co Ltd | 中継装置、端末装置、および中継方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5872774A (en) * | 1997-09-19 | 1999-02-16 | Qualcomm Incorporated | Mobile station assisted timing synchronization in a CDMA communication system |
US6526039B1 (en) * | 1998-02-12 | 2003-02-25 | Telefonaktiebolaget Lm Ericsson | Method and system for facilitating timing of base stations in an asynchronous CDMA mobile communications system |
US6208871B1 (en) * | 1998-02-27 | 2001-03-27 | Motorola, Inc. | Method and apparatus for providing a time adjustment to a wireless communication system |
JP2001186559A (ja) * | 1999-12-22 | 2001-07-06 | Nec Corp | 移動通信システム及びそれに用いる基地局間の簡易同期方法 |
CN101005314B (zh) * | 2000-04-07 | 2013-06-05 | 交互数字技术公司 | 用于无线通信系统的基站同步 |
US6775242B2 (en) * | 2001-07-09 | 2004-08-10 | Qualcomm Incorporated | Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system |
US7551546B2 (en) * | 2002-06-27 | 2009-06-23 | Nortel Networks Limited | Dual-mode shared OFDM methods/transmitters, receivers and systems |
US6928062B2 (en) * | 2002-10-29 | 2005-08-09 | Qualcomm, Incorporated | Uplink pilot and signaling transmission in wireless communication systems |
US6999467B2 (en) * | 2003-07-28 | 2006-02-14 | Motorola, Inc. | Method and apparatus for transmission and reception within an OFDM communication system |
ATE415754T1 (de) * | 2003-10-16 | 2008-12-15 | Mitsubishi Electric Corp | Verfahren zum mapping von den chips eines gespreitzten symboles zu unterkanälen von einem mehrträgerübertragungsystem |
US7242722B2 (en) * | 2003-10-17 | 2007-07-10 | Motorola, Inc. | Method and apparatus for transmission and reception within an OFDM communication system |
WO2005081437A1 (en) * | 2004-02-17 | 2005-09-01 | Huawei Technologies Co., Ltd. | Multiplexing scheme in a communication system |
US7606295B2 (en) * | 2005-02-24 | 2009-10-20 | Interdigital Technology Corporation | Generalized rake receiver for wireless communication |
US20060203850A1 (en) * | 2005-03-14 | 2006-09-14 | Johnson Walter L | Method and apparatus for distributing timing information in an asynchronous wireless communication system |
JP4592477B2 (ja) * | 2005-03-31 | 2010-12-01 | 株式会社エヌ・ティ・ティ・ドコモ | 無線通信システム、基地局、移動局、及び無線通信方法 |
-
2006
- 2006-04-26 KR KR1020077024710A patent/KR101214102B1/ko active IP Right Grant
- 2006-04-26 JP JP2007514754A patent/JP4926047B2/ja active Active
- 2006-04-26 US US11/912,636 patent/US8320356B2/en active Active
- 2006-04-26 EP EP06732346.9A patent/EP1865637A4/en not_active Withdrawn
- 2006-04-26 WO PCT/JP2006/308690 patent/WO2006118124A1/ja active Application Filing
- 2006-04-26 CN CN200680014236.4A patent/CN101167283B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06334573A (ja) * | 1993-05-26 | 1994-12-02 | Hitachi Ltd | 放送方式及びこれを用いる放送送受信システム |
JP2001103029A (ja) * | 1999-09-28 | 2001-04-13 | Sanyo Electric Co Ltd | ディジタル放送受信機 |
JP2002016577A (ja) * | 2000-06-28 | 2002-01-18 | Sony Corp | 通信方法および通信装置 |
JP2003179522A (ja) * | 2001-12-07 | 2003-06-27 | Matsushita Electric Ind Co Ltd | マルチキャリア送受信装置、マルチキャリア無線通信方法、およびマルチキャリア無線通信用プログラム |
JP2003244763A (ja) * | 2002-02-14 | 2003-08-29 | Ntt Docomo Inc | 移動通信システム、チャネル同期確立方法、及び移動局 |
JP2005117625A (ja) * | 2003-09-16 | 2005-04-28 | Matsushita Electric Ind Co Ltd | 中継装置、端末装置、および中継方法 |
Non-Patent Citations (3)
Title |
---|
HARADA ET AL.: "Dynamic Parameter Controlled OF/TDMA ni yoru Shinsedai Ido Tsushin System (Dynamic Parameter Controlled OF/TDMA)", vol. 103, no. 553, 9 January 2004 (2004-01-09), pages 41 - 46, XP003002459 * |
NAGATA S. ET AL.: "Kudari Link Spread OFDM Broadband Packet Musen Access ni Okeru Shuhasu packet Scheduling no Koka (Effect of Frequency-domain Packet Scheduling in Forward Link Spread OFDM Broadband Packet Wireless Access)", vol. 104, no. 440, 12 November 2004 (2004-11-12), pages 31 - 36, XP003002460 * |
See also references of EP1865637A4 * |
Cited By (15)
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JPWO2007020995A1 (ja) * | 2005-08-19 | 2009-03-26 | パナソニック株式会社 | 無線通信移動局装置、無線通信基地局装置およびcqi報告方法 |
JP4768739B2 (ja) * | 2005-08-19 | 2011-09-07 | パナソニック株式会社 | 無線通信移動局装置、無線通信基地局装置およびcqi報告方法 |
JP2010512678A (ja) * | 2006-12-27 | 2010-04-22 | シャープ株式会社 | スタガ基準信号とともに送信時間間隔信号を送信するための装置および方法 |
US7912092B2 (en) | 2006-12-27 | 2011-03-22 | Sharp Laboratories Of America, Inc. | Systems and methods for transmitting a transmission time interval signal with staggered reference signals |
WO2008078830A1 (en) * | 2006-12-27 | 2008-07-03 | Sharp Kabushiki Kaisha | Apparatuses and methods for transmitting a transmission time interval signal with staggered reference signals |
US8265043B2 (en) | 2007-01-09 | 2012-09-11 | Ntt Docomo, Inc. | Transmitting device, receiving device, and method used in mobile communication system employing OFDM |
JP2008172377A (ja) * | 2007-01-09 | 2008-07-24 | Ntt Docomo Inc | Ofdm方式を利用する移動通信システムで使用される送信装置、受信装置及び方法 |
US20100027512A1 (en) * | 2007-01-09 | 2010-02-04 | Ntt Docomo, Inc. | Transmitting device, receiving device, and method used in mobile communication system employing ofdm |
KR101420184B1 (ko) * | 2007-01-09 | 2014-07-17 | 가부시키가이샤 엔티티 도코모 | Ofdm 방식을 이용하는 이동통신시스템에서 사용되는 송신장치, 수신장치 및 방법 |
AU2007342808B2 (en) * | 2007-01-09 | 2013-01-24 | Ntt Docomo, Inc. | Transmitting Device, Receiving Device, and Method used in Mobile Communication System Employing OFDM |
JP2008205536A (ja) * | 2007-02-16 | 2008-09-04 | Sanyo Electric Co Ltd | 送信方法、通知方法、端末装置および基地局装置 |
WO2011135850A1 (ja) * | 2010-04-30 | 2011-11-03 | パナソニック株式会社 | 基地局装置、通信端末装置、送信方法及び復調方法 |
JP2011234295A (ja) * | 2010-04-30 | 2011-11-17 | Panasonic Corp | 基地局装置、通信端末装置、送信方法及び復調方法 |
JP2010279077A (ja) * | 2010-08-31 | 2010-12-09 | Ntt Docomo Inc | Ofdm方式で変調された送信信号を受信する受信装置及び受信方法 |
JP2014135761A (ja) * | 2014-04-04 | 2014-07-24 | Sharp Corp | 通信システム、移動局および信号処理方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006118124A1 (ja) | 2008-12-18 |
EP1865637A4 (en) | 2013-05-01 |
KR20080003371A (ko) | 2008-01-07 |
CN101167283A (zh) | 2008-04-23 |
EP1865637A1 (en) | 2007-12-12 |
US8320356B2 (en) | 2012-11-27 |
JP4926047B2 (ja) | 2012-05-09 |
CN101167283B (zh) | 2014-05-07 |
KR101214102B1 (ko) | 2012-12-20 |
US20080273517A1 (en) | 2008-11-06 |
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