WO2010013751A1 - 無線通信システムおよび無線通信方法 - Google Patents

無線通信システムおよび無線通信方法 Download PDF

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Publication number
WO2010013751A1
WO2010013751A1 PCT/JP2009/063507 JP2009063507W WO2010013751A1 WO 2010013751 A1 WO2010013751 A1 WO 2010013751A1 JP 2009063507 W JP2009063507 W JP 2009063507W WO 2010013751 A1 WO2010013751 A1 WO 2010013751A1
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WO
WIPO (PCT)
Prior art keywords
base station
radio communication
communication mode
communication
terminals
Prior art date
Application number
PCT/JP2009/063507
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English (en)
French (fr)
Inventor
玉木　剛
Original Assignee
株式会社日立製作所
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 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to US13/056,401 priority Critical patent/US8711774B2/en
Priority to CN200980129934.2A priority patent/CN102113384B/zh
Priority to EP09802993.7A priority patent/EP2309801A4/en
Priority to JP2010522741A priority patent/JP5174169B2/ja
Publication of WO2010013751A1 publication Critical patent/WO2010013751A1/ja

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • 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
    • H04B7/022—Site diversity; Macro-diversity
    • 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
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] 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
    • H04B7/0413—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
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO 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
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H04L25/0204—Channel estimation of multiple channels

Abstract

　端末が要求する通信速度を満たしつつ、フィードバック量を削減する無線通信システムである。複数のアンテナを持つ複数の基地局１０２ａ，ｂと、複数のアンテナを持つ複数の端末１０３ａ～ｄと、複数の基地局を集中管理する基地局制御局１０１ａとで構成される無線通信システムにおいて、ある一定時間（タイムスロット）の間に、１つの基地局と１つの端末のみが通信を行う（ＭＩＭＯ＋ＴＤＭＡ）通信モードと、１つの基地局が複数の端末と同時通信を行う（ＳＤＭＡ＋ＴＤＭＡ）通信モードと、複数の基地局を基地局制御局によって複数の基地局を連携させて複数の端末と同時通信を行う（マルチポイントＳＤＭＡ）通信モードとを有し、端末からの要求通信速度を満たせるかどうかを基地局や基地局制御局で判断することによって通信モードを切り替えることにより、自動的に適切な通信モードを決定する。
PCT/JP2009/063507 2008-07-30 2009-07-29 無線通信システムおよび無線通信方法 WO2010013751A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/056,401 US8711774B2 (en) 2008-07-30 2009-07-29 Wireless communication system and wireless communication method
CN200980129934.2A CN102113384B (zh) 2008-07-30 2009-07-29 无线电通信系统和无线电通信方法
EP09802993.7A EP2309801A4 (en) 2008-07-30 2009-07-29 RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD
JP2010522741A JP5174169B2 (ja) 2008-07-30 2009-07-29 無線通信システムおよび無線通信方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-195691 2008-07-30
JP2008195691 2008-07-30

Publications (1)

Publication Number Publication Date
WO2010013751A1 true WO2010013751A1 (ja) 2010-02-04

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PCT/JP2009/063507 WO2010013751A1 (ja) 2008-07-30 2009-07-29 無線通信システムおよび無線通信方法

Country Status (5)

Country Link
US (1) US8711774B2 (ja)
EP (1) EP2309801A4 (ja)
JP (2) JP5174169B2 (ja)
CN (1) CN102113384B (ja)
WO (1) WO2010013751A1 (ja)

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JP5174169B2 (ja) 2013-04-03
JP2013093879A (ja) 2013-05-16
JPWO2010013751A1 (ja) 2012-01-12
EP2309801A1 (en) 2011-04-13
JP5383896B2 (ja) 2014-01-08
EP2309801A4 (en) 2014-12-31
US8711774B2 (en) 2014-04-29
US20110134848A1 (en) 2011-06-09
CN102113384B (zh) 2015-09-30
CN102113384A (zh) 2011-06-29

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