JP4898786B2 - 無線通信端末装置及び無線通信基地局装置 - Google Patents
無線通信端末装置及び無線通信基地局装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0628—Diversity capabilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0643—Feedback on request
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Texas Instruments, 3GPP TSG RAN WG1 #42bis R1-051056, "Throughput comparison of single user and multi user MIMO for Downlink OFDMA E-UTRA", San Diego, USA, 10 - 14 October, 2005
より受信SINRが劣化するので、Multi-User MIMOシステムに収容できないという問題がある。
本発明の実施の形態1では、図2に示すように、BSのアンテナ数を2とし、このBSのセル内に収容されるUE数を3とする。また、3つのUEのうち、1つはアンテナ数1の非MIMO UEとし、残りの2つはアンテナ数2のMIMO UEとする。また、BSは送信ビームを形成し、このビームの情報(ビーム情報)はBSとUEとにおいて共有されるものとする。
信ビーム形成部105に出力される。
UEか非MIMO UEかを示す端末情報をBSに通知しているため、BSではセル内に非MIMO UEが存在するか否かを確認することができる。非MIMO UEが存在する場合にはST402に移行し、非MIMO UEが存在しない場合にはST404に移行する。
いるものとする。ここで、チャネル推定情報をH、雑音電力をNとすると、各ビーム組合せ時(Bcomb=1〜6のそれぞれに対応)のSINRi(i=1〜6)は以下の式(2)〜(7)で表すことができる。
をBSへフィードバックする。
実施の形態1では、非MIMO UEがMIMO UEに対して優先的にビームを割り当てられる場合について説明したが、本発明の実施の形態2では、複数のMIMO UEのうちチャネル相関の高いMIMO UEに優先的にビームを割り当てる場合について説明する。
ームを形成し、それぞれのUEに対して下りデータを送信する。
実施の形態2では、複数のMIMO UEのうちチャネル相関の高いMIMO UEに優先的にビームを割り当てる場合について説明したが、本発明の実施の形態3では、複数のMIMO UEのうち信号分離処理能力の低いMIMO UEに優先的にビームを割り当てる場合について説明する。
られないので、Bc=0として各UEが自身の端末性能を判断しないようにする。
Claims (4)
- 無線通信基地局装置から送信されたパイロット信号を受信する受信手段と、
前記パイロット信号を用いてチャネル推定を行い、チャネル推定値を求めるチャネル推定手段と、
前記無線通信基地局装置が形成する複数のビーム情報を有し、前記チャネル推定値から求まる受信品質が最大となる所望のビームと、マルチユーザ通信の対象となる他のユーザに向けるビームとの組合せを決定し、決定したビームの組合せを前記無線通信基地局装置にフィードバックするビーム組合せ決定手段と、
を具備し、
前記ビーム組合せ決定手段は、前記チャネル推定値を用いて検出したチャネル相関が所定の閾値以上となる場合、または、自端末装置の信号分離能力がセル内の他の端末装置に対して相対的に低い場合、前記ビームの組合せを決定する、
無線通信端末装置。 - ZFまたはMMSEの信号分離能力を有する干渉除去手段を具備する請求項1に記載の無線通信端末装置。
- 請求項1に記載の無線通信端末装置からフィードバックされた、所望のビームとマルチユーザ通信の対象となる他のユーザに向けるビームとの組合せ情報、および、他の無線通信端末装置からフィードバックされた所望のビーム情報、を受信する受信手段と、
複数のビームを形成するビーム形成手段と、
前記組合せ情報および前記所望のビーム情報に基づいて、前記無線通信端末装置を空間リソースに割り当てる割り当て手段と、
前記複数のビーム情報に基づいて、前記ビーム形成手段を制御するビームウェイトを生成するビームウェイト生成手段と、
を具備する無線通信基地局装置。 - 無線通信基地局装置から送信されたパイロット信号を用いてチャネル推定値を求める工程と、
前記無線通信基地局装置が形成する複数のビーム情報に基づいて、受信品質が最大となる所望のビームと、マルチユーザ通信の対象となる他のユーザに向けるビームとの組合せを決定し、決定したビームの組合せを無線通信端末装置から前記無線通信基地局装置にフィードバックする工程と、
フィードバックされた前記ビームの組合せに基づいて、前記無線通信端末装置及び前記他のユーザに送信ビームを形成する工程と、
を具備し、
前記チャネル推定値を用いて検出したチャネル相関が所定の閾値以上となる場合、または、自端末装置の信号分離能力がセル内の他の端末装置に対して相対的に低い場合、前記ビームの組合せが決定される、
送信ビーム形成方法。
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JP2008506871A JP4898786B2 (ja) | 2006-03-24 | 2007-03-23 | 無線通信端末装置及び無線通信基地局装置 |
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JP2006083897 | 2006-03-24 | ||
JP2006083897 | 2006-03-24 | ||
JP2008506871A JP4898786B2 (ja) | 2006-03-24 | 2007-03-23 | 無線通信端末装置及び無線通信基地局装置 |
PCT/JP2007/056069 WO2007111266A1 (ja) | 2006-03-24 | 2007-03-23 | 無線通信端末装置及び無線通信基地局装置 |
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JPWO2007111266A1 JPWO2007111266A1 (ja) | 2009-08-13 |
JP4898786B2 true JP4898786B2 (ja) | 2012-03-21 |
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US (1) | US20090291702A1 (ja) |
EP (1) | EP1988653A1 (ja) |
JP (1) | JP4898786B2 (ja) |
WO (1) | WO2007111266A1 (ja) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101269201B1 (ko) * | 2006-06-30 | 2013-05-28 | 삼성전자주식회사 | 폐 루프 방식의 다중 안테나 시스템에서 데이터송/수신장치 및 방법 |
KR20100046338A (ko) | 2008-10-27 | 2010-05-07 | 삼성전자주식회사 | 이동통신 시스템의 공조 빔 형성 장치 및 방법 |
US8200286B2 (en) * | 2008-10-31 | 2012-06-12 | Telefonaktiebolaget L M Ericsson (Publ) | Base station and method for improving coverage in a wireless communication system using antenna beam-jitter and CQI correction |
US8396162B2 (en) * | 2008-11-03 | 2013-03-12 | Motorola Mobility Llc | Method and apparatus for choosing a modulation and coding rate in a multi-user, MIMO communication system |
JP5103357B2 (ja) * | 2008-11-04 | 2012-12-19 | 株式会社エヌ・ティ・ティ・ドコモ | 移動端末装置及び無線基地局装置 |
KR100990395B1 (ko) * | 2008-11-11 | 2010-10-29 | 한국전자통신연구원 | 무선 통신 시스템에서 데이터 송신 장치 및 방법 |
US8665806B2 (en) * | 2008-12-09 | 2014-03-04 | Motorola Mobility Llc | Passive coordination in a closed loop multiple input multiple out put wireless communication system |
US8213360B2 (en) * | 2009-04-29 | 2012-07-03 | Nokia Corporation | Apparatus and method for flexible switching between device-to-device communication mode and cellular communication mode |
KR101534865B1 (ko) | 2009-06-23 | 2015-07-27 | 엘지전자 주식회사 | 링크 적응 절차 수행 방법 |
KR20110027533A (ko) | 2009-09-09 | 2011-03-16 | 엘지전자 주식회사 | 다중 안테나 시스템에서 제어정보 전송 방법 및 장치 |
US9042331B2 (en) | 2009-09-09 | 2015-05-26 | Lg Electronics Inc. | Method and apparatus for transmitting control information in WLAN system |
US20120202545A1 (en) * | 2009-10-09 | 2012-08-09 | Kyocera Corporation | Communication system, radio base station, and communication control method |
CN102056220B (zh) | 2009-10-28 | 2014-02-19 | 华为技术有限公司 | 实现信道测量的方法及装置 |
KR101331674B1 (ko) | 2010-02-12 | 2013-11-20 | 엘지전자 주식회사 | 무선랜 시스템에서 제어 정보 전송 방법 및 장치 |
US8554261B2 (en) * | 2010-07-28 | 2013-10-08 | Intel Corporation | Power loading in MU-MIMO |
WO2012124892A1 (ko) * | 2011-03-14 | 2012-09-20 | 엘지전자 주식회사 | 채널상태정보 송수신 방법 및 송수신 장치 |
US20140092811A1 (en) * | 2011-05-04 | 2014-04-03 | Lg Electronics Inc. | Method for transmitting channel status information and user equipment, and method for receiving channel status information and base station |
CN103733540B (zh) * | 2011-08-16 | 2018-01-16 | 三星电子株式会社 | 用于在波束成形的无线通信系统中支持多天线传输的装置和方法 |
US9026560B2 (en) * | 2011-09-16 | 2015-05-05 | Cisco Technology, Inc. | Data center capability summarization |
KR102183213B1 (ko) * | 2013-05-10 | 2020-11-25 | 삼성전자주식회사 | 무선 통신 시스템에서 송수신 빔을 선택하기 위한 장치 및 방법 |
CN103269242B (zh) * | 2013-06-04 | 2016-01-13 | 山东大学 | 一种基于凸优化的上行协作中继波束成形方法 |
EP3068156B1 (en) * | 2013-11-29 | 2018-01-17 | Huawei Device Co., Ltd. | Beam precoding manner reporting method, and scheduling method and device |
US20160191201A1 (en) * | 2014-12-29 | 2016-06-30 | Electronics And Telecommunications Research Institute | Method and apparatus for transmitting channel quality indicator information of beams in communication system |
KR102293045B1 (ko) * | 2015-05-29 | 2021-08-26 | 삼성전자주식회사 | Mimo 기반 빔포밍을 지원하는 방법 및 장치 |
CN109076371B (zh) * | 2016-06-01 | 2023-03-24 | 苹果公司 | 用于灵活传输模式切换的cqi上报 |
US11272427B2 (en) * | 2019-05-10 | 2022-03-08 | Huawei Technologies Co., Ltd. | Systems and methods for capability indication for a wireless receiving station |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004194262A (ja) * | 2002-10-18 | 2004-07-08 | Ntt Docomo Inc | 信号伝送システム、信号伝送方法及び送信機 |
JP2006005908A (ja) * | 2004-05-20 | 2006-01-05 | Matsushita Electric Ind Co Ltd | 無線通信システム、無線通信方法、基地局装置及び端末装置 |
JP2006333482A (ja) * | 2005-05-24 | 2006-12-07 | Ntt Docomo Inc | ランダムビームフォーミング方式によるmimo通信システム及びそのユーザスケジューリング方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006083897A (ja) | 2004-09-14 | 2006-03-30 | Ntn Corp | チルトヒンジ |
US20060264184A1 (en) * | 2005-02-17 | 2006-11-23 | Interdigital Technology Corporation | Method and apparatus for selecting a beam combination of multiple-input multiple-output antennas |
-
2007
- 2007-03-23 WO PCT/JP2007/056069 patent/WO2007111266A1/ja active Application Filing
- 2007-03-23 US US12/293,528 patent/US20090291702A1/en not_active Abandoned
- 2007-03-23 EP EP07739510A patent/EP1988653A1/en not_active Withdrawn
- 2007-03-23 JP JP2008506871A patent/JP4898786B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004194262A (ja) * | 2002-10-18 | 2004-07-08 | Ntt Docomo Inc | 信号伝送システム、信号伝送方法及び送信機 |
JP2006005908A (ja) * | 2004-05-20 | 2006-01-05 | Matsushita Electric Ind Co Ltd | 無線通信システム、無線通信方法、基地局装置及び端末装置 |
JP2006333482A (ja) * | 2005-05-24 | 2006-12-07 | Ntt Docomo Inc | ランダムビームフォーミング方式によるmimo通信システム及びそのユーザスケジューリング方法 |
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JPWO2007111266A1 (ja) | 2009-08-13 |
WO2007111266A1 (ja) | 2007-10-04 |
US20090291702A1 (en) | 2009-11-26 |
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