WO2011059248A3 - 무선랜 시스템에서의 mu-mimo 전송방법 - Google Patents

무선랜 시스템에서의 mu-mimo 전송방법 Download PDF

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Publication number
WO2011059248A3
WO2011059248A3 PCT/KR2010/007975 KR2010007975W WO2011059248A3 WO 2011059248 A3 WO2011059248 A3 WO 2011059248A3 KR 2010007975 W KR2010007975 W KR 2010007975W WO 2011059248 A3 WO2011059248 A3 WO 2011059248A3
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WIPO (PCT)
Prior art keywords
mimo
sta
channel information
transmission method
mimo transmission
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Application number
PCT/KR2010/007975
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English (en)
French (fr)
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WO2011059248A2 (ko
Inventor
석용호
김봉회
이대원
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엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to US13/509,277 priority Critical patent/US8891653B2/en
Publication of WO2011059248A2 publication Critical patent/WO2011059248A2/ko
Publication of WO2011059248A3 publication Critical patent/WO2011059248A3/ko
Priority to US14/484,079 priority patent/US9906281B2/en

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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
    • H04B7/0452—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
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H04B7/0617—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 for beam forming
    • 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
    • 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
    • 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
    • H04B7/0658—Feedback reduction
    • H04B7/0663—Feedback reduction using vector or matrix manipulations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

무선랜 시스템에서의 MU-MIMO(Multi User - Multiple Input Multiple Output) 전송방법 및 이를 지원하는 무선장치를 제공한다. 본 발명에 따른 MU-MIMO 전송방법은 MU-MIMO 전송의 대상이 되는 목적 STA에게 MU-MIMO 전송이 개시될 것임을 알리는 MU-MIMO 개시 메시지를 전송하고, MU-MIMO 개시 메시지에 대한 응답으로, 목적 STA으로부터 전송되는 사운딩 프레임을 수신하고, 사운딩 프레임으로부터 획득한 채널 정보를 기반으로 빔포밍하여 데이터를 MU-MIMO 전송하는 것을 포함하되, 사운딩 프레임은 프리코딩(precoding)되어 가상화된 AP와 STA간의 채널 정보 Hvirtual를 포함하고, Hvirtual의 차원(dimension)은 AP와 STA 간의 채널 정보 H 의 차원보다 낮은 것을 특징으로 한다.
PCT/KR2010/007975 2009-11-12 2010-11-12 무선랜 시스템에서의 mu-mimo 전송방법 WO2011059248A2 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/509,277 US8891653B2 (en) 2009-11-12 2010-11-12 MU-MIMO transmission method in wireless LAN system
US14/484,079 US9906281B2 (en) 2009-11-12 2014-09-11 MU-MIMO transmission method in wireless LAN system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26040709P 2009-11-12 2009-11-12
US61/260,407 2009-11-12

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US13/509,277 A-371-Of-International US8891653B2 (en) 2009-11-12 2010-11-12 MU-MIMO transmission method in wireless LAN system
US14/484,079 Continuation US9906281B2 (en) 2009-11-12 2014-09-11 MU-MIMO transmission method in wireless LAN system

Publications (2)

Publication Number Publication Date
WO2011059248A2 WO2011059248A2 (ko) 2011-05-19
WO2011059248A3 true WO2011059248A3 (ko) 2011-11-03

Family

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PCT/KR2010/007975 WO2011059248A2 (ko) 2009-11-12 2010-11-12 무선랜 시스템에서의 mu-mimo 전송방법

Country Status (2)

Country Link
US (2) US8891653B2 (ko)
WO (1) WO2011059248A2 (ko)

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WO2012173326A1 (en) 2011-06-15 2012-12-20 Lg Electronics Inc. Method for transmitting and receiving data unit based on uplink multiple user multiple input multiple output transmission and apparatus for the same
US20130176998A1 (en) * 2012-01-06 2013-07-11 Nokia Corporation Mechanism For Coexistence Between Wireless Networks
US9319173B2 (en) * 2012-04-11 2016-04-19 Qualcomm Incorporated Requests for transmission parameters in a multi-user scenario
US9319174B2 (en) * 2012-04-11 2016-04-19 Qualcomm Incorporated Verifying support for requests for transmission parameters in a multi-user scenario
US20130272347A1 (en) * 2012-04-11 2013-10-17 Qualcomm Incorporated Providing transmission parameters for multi-user communication
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WO2014196722A1 (en) * 2013-06-03 2014-12-11 Lg Electronics Inc. Method and apparatus for performing antenna virtualization using polarimetric antenna in a wireless communication system
US9008152B2 (en) 2013-08-27 2015-04-14 Nokia Technologies Oy Method, apparatus, and computer program product for wireless signaling
WO2015060514A1 (ko) * 2013-10-22 2015-04-30 엘지전자 주식회사 중첩된 서비스 영역에서 간섭을 방지하는 방법 및 장치
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Publication number Publication date
US20150029986A1 (en) 2015-01-29
US20120230443A1 (en) 2012-09-13
US8891653B2 (en) 2014-11-18
WO2011059248A2 (ko) 2011-05-19
US9906281B2 (en) 2018-02-27

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