WO2009072255A1 - 無線通信システム - Google Patents

無線通信システム Download PDF

Info

Publication number
WO2009072255A1
WO2009072255A1 PCT/JP2008/003492 JP2008003492W WO2009072255A1 WO 2009072255 A1 WO2009072255 A1 WO 2009072255A1 JP 2008003492 W JP2008003492 W JP 2008003492W WO 2009072255 A1 WO2009072255 A1 WO 2009072255A1
Authority
WO
WIPO (PCT)
Prior art keywords
training time
training
transmission path
antenna combinations
client devices
Prior art date
Application number
PCT/JP2008/003492
Other languages
English (en)
French (fr)
Inventor
Hiroyuki Yurugi
Wataru Noguchi
Masahiko Nagoshi
Sotaro Shinkai
Akihiko Shiotsuki
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/743,296 priority Critical patent/US8284718B2/en
Publication of WO2009072255A1 publication Critical patent/WO2009072255A1/ja

Links

Classifications

    • 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
    • H04B7/0851—Joint weighting using training sequences or error signal
    • 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
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Abstract

　ストリーム伝送開始前に、サーバ装置（１００）は、クライアント装置（２００）からアンテナ組み合わせ数を取得し、アンテナ組み合わせ数の最大値に従ってトレーニング時間ｔ１を決定し、各クライアント装置（２００）にトレーニング時間ｔ１を通知し、各クライアント装置（２００）は、トレーニング時間ｔ１に基づき、各アンテナ組み合わせについて伝送路状態を推定するために必要なトレーニング時間ｔ２を決定し、サーバ装置（１００）は、トレーニング時間ｔ１にわたってトレーニング信号を送信し、各クライアント装置（２００）は、各アンテナ組み合わせについて、トレーニング時間ｔ２にわたってトレーニング信号を用いて伝送路状態を推定し、推定された伝送路状態に基づきアンテナ組み合わせを選択して設定する。
PCT/JP2008/003492 2007-12-04 2008-11-27 無線通信システム WO2009072255A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/743,296 US8284718B2 (en) 2007-12-04 2008-11-27 Wireless communication system having MIMO communication capability and having multiple receiving antennas to be selected

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-313343 2007-12-04
JP2007313343A JP5006172B2 (ja) 2007-12-04 2007-12-04 無線通信方法及び無線通信システム

Publications (1)

Publication Number Publication Date
WO2009072255A1 true WO2009072255A1 (ja) 2009-06-11

Family

ID=40717438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/003492 WO2009072255A1 (ja) 2007-12-04 2008-11-27 無線通信システム

Country Status (3)

Country Link
US (1) US8284718B2 (ja)
JP (1) JP5006172B2 (ja)
WO (1) WO2009072255A1 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100848139B1 (ko) * 2006-12-08 2008-07-23 한국전자통신연구원 근접한 무선 단말 간의 네트워크 자동 설정 장치 및 그 방법
KR20100082106A (ko) * 2009-01-08 2010-07-16 삼성전자주식회사 와이 파이 멀티미디어 기반의 데이터 전송 방법 및 장치
JP2011101112A (ja) 2009-11-04 2011-05-19 Nec Casio Mobile Communications Ltd 無線通信装置、無線通信方法及びプログラム
JP5672236B2 (ja) * 2009-11-04 2015-02-18 日本電気株式会社 無線通信システムの制御方法、無線通信システム、及び無線通信装置
KR101637211B1 (ko) * 2010-04-12 2016-07-08 삼성전자 주식회사 휴대 단말기 및 그의 다중 입력 다중 출력 안테나 운용 방법
KR101932197B1 (ko) 2012-07-03 2018-12-24 삼성전자주식회사 다중 안테나 통신 시스템에서의 안테나 개수 결정 방법 및 장치
JP2015012363A (ja) * 2013-06-27 2015-01-19 ソニー株式会社 通信装置及び検出方法
US9161376B2 (en) * 2013-08-20 2015-10-13 Cisco Technology, Inc. System and method for managing access point communication channel utilization
JP5950359B2 (ja) * 2014-04-01 2016-07-13 日本電気株式会社 無線通信装置、無線通信方法及びプログラム
JP2016139940A (ja) * 2015-01-28 2016-08-04 京セラ株式会社 無線通信方法および基地局
EP3407505B1 (en) * 2016-04-05 2020-02-05 Huawei Technologies Co., Ltd. Antenna measurement method and terminal
US10542200B2 (en) * 2017-05-23 2020-01-21 Panasonic Intellectual Property Managemant Co., Ltd. Surveillance camera system
US10715233B2 (en) * 2017-08-31 2020-07-14 Qualcomm Incorporated Sounding reference signal (SRS) transmit antenna selection
US10637591B1 (en) * 2019-03-13 2020-04-28 Verizon Patent And Licensing Inc. Automated installed environment antenna characteristics determination
WO2020212730A1 (en) 2019-04-16 2020-10-22 Nokia Solutions And Networks Oy Method and apparatus for selecting antenna elements of an antenna array

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005509359A (ja) * 2001-11-07 2005-04-07 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ ダイバーシティシステムにおける複数のアンテナからアンテナのサブセットを選択する方法
WO2006104537A2 (en) * 2005-03-29 2006-10-05 Sony Corporation Method and apparatus to resist fading in mimo and simo wireless systems
JP2006324787A (ja) * 2005-05-17 2006-11-30 Nippon Hoso Kyokai <Nhk> Ｍｉｍｏ受信アンテナ選択装置
JP2007214759A (ja) * 2006-02-08 2007-08-23 Nippon Telegr & Teleph Corp <Ntt> 無線通信装置および無線通信方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7173899B1 (en) * 2000-08-28 2007-02-06 Lucent Technologies Inc. Training and synchronization sequences for wireless systems with multiple transmit and receive antennas used in CDMA or TDMA systems
WO2005004376A1 (ja) * 2003-06-30 2005-01-13 Fujitsu Limited 多入力多出力伝送システム
KR100981554B1 (ko) * 2003-11-13 2010-09-10 한국과학기술원 다중 송수신 안테나들을 구비하는 이동통신시스템에서,송신 안테나들을 그룹핑하여 신호를 전송하는 방법
US7418053B2 (en) * 2004-07-30 2008-08-26 Rearden, Llc System and method for distributed input-distributed output wireless communications
US7599420B2 (en) * 2004-07-30 2009-10-06 Rearden, Llc System and method for distributed input distributed output wireless communications
US8619907B2 (en) * 2004-06-10 2013-12-31 Agere Systems, LLC Method and apparatus for preamble training in a multiple antenna communication system
US8483200B2 (en) * 2005-04-07 2013-07-09 Interdigital Technology Corporation Method and apparatus for antenna mapping selection in MIMO-OFDM wireless networks
US20070041457A1 (en) * 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
KR100848139B1 (ko) * 2006-12-08 2008-07-23 한국전자통신연구원 근접한 무선 단말 간의 네트워크 자동 설정 장치 및 그 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005509359A (ja) * 2001-11-07 2005-04-07 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ ダイバーシティシステムにおける複数のアンテナからアンテナのサブセットを選択する方法
WO2006104537A2 (en) * 2005-03-29 2006-10-05 Sony Corporation Method and apparatus to resist fading in mimo and simo wireless systems
JP2006324787A (ja) * 2005-05-17 2006-11-30 Nippon Hoso Kyokai <Nhk> Ｍｉｍｏ受信アンテナ選択装置
JP2007214759A (ja) * 2006-02-08 2007-08-23 Nippon Telegr & Teleph Corp <Ntt> 無線通信装置および無線通信方法

Also Published As

Publication number Publication date
US8284718B2 (en) 2012-10-09
JP2009141470A (ja) 2009-06-25
JP5006172B2 (ja) 2012-08-22
US20100246496A1 (en) 2010-09-30

Similar Documents

Publication Publication Date Title
WO2009072255A1 (ja) 無線通信システム
WO2012115362A3 (en) Method of controlling uplink transmission power at ue in wireless communication system and apparatus thereof
WO2011085187A3 (en) Method and apparatus for performing uplink antenna transmit diversity
WO2016090411A8 (en) Multicarrier communications system
WO2010147515A8 (en) A method for antenna calibration in a wideband communication system
WO2016026431A8 (en) Direction finding antenna format
WO2011049388A3 (en) Method and base station for transmitting sa-preamble and method and user equipment for receiving sa-preamble
WO2012134218A3 (ko) 무선 통신 시스템에서 단말이 네트워크와의 보안 설정 방법 및 이를 위한 장치
WO2010128836A3 (ko) 기준 신호에 대한 피드백 정보를 전송하는 방법 및 장치
WO2012081881A3 (ko) 다중 분산 노드 시스템에서 채널상태정보 참조신호를 전송하는 방법 및 수신 방법
WO2010124232A3 (en) Wireless channel calibration
WO2008118067A3 (en) Preparation phase for switching between su-mimo and mu-mimo
WO2012002705A3 (en) Method and apparatus for transmitting data frame in wlan system
WO2010062051A3 (ko) 다중 입출력 시스템에서 공간 다중화 프리코딩 방법
WO2011055940A3 (ko) 채널 품질 정보의 전송 방법 및 이를 위한 장치
WO2013002563A3 (ko) 채널상태정보 전송방법 및 사용자 기기, 그리고 채널상태정보 수신방법 및 기지국
WO2011080299A3 (en) A terminal and a method for communicating simultaneously on two frequencies
WO2010143821A3 (en) Communication method using a carrier aggregation and apparatus therefore
WO2012128999A3 (en) Methods for synchronizing macro cell and small cell systems
WO2011074923A3 (ko) 다중 반송파 지원 무선 통신 시스템에서 효율적인 채널 상태 정보 전송 방법 및 장치
WO2012036503A3 (ko) 다중 안테나 지원 무선 통신 시스템에서 효율적인 피드백 방법 및 장치
WO2011013977A3 (ko) 제어 정보를 전송하는 방법 및 이를 위한 장치
WO2012015228A3 (ko) 상향 링크를 이용하여 제어 신호를 전송하는 시스템
WO2010074500A3 (en) Uplink transission in carrier aggregation environment
WO2008146889A1 (ja) 通信システム、閾値管理サーバ、無線通信装置及び通信方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08858047

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12743296

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08858047

Country of ref document: EP

Kind code of ref document: A1