WO2011059248A3 - 무선랜 시스템에서의 mu-mimo 전송방법 - Google Patents
무선랜 시스템에서의 mu-mimo 전송방법 Download PDFInfo
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- 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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- mimo
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- channel information
- transmission method
- mimo transmission
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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
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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
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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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
- H04B7/06—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]
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- 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
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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
- H04B7/06—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
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- 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]
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- 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.
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
ID=43992226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2010/007975 WO2011059248A2 (ko) | 2009-11-12 | 2010-11-12 | 무선랜 시스템에서의 mu-mimo 전송방법 |
Country Status (2)
Country | Link |
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US (2) | US8891653B2 (ko) |
WO (1) | WO2011059248A2 (ko) |
Families Citing this family (19)
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US8547955B2 (en) * | 2010-07-28 | 2013-10-01 | Intel Corporation | Feedback scheme for MU-MIMO |
US20120099664A1 (en) * | 2010-10-26 | 2012-04-26 | Electronics And Telecommunications Research Institute | Method of multiple frame transmission in wireless communication system and transmitter |
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 |
KR101930122B1 (ko) * | 2012-04-13 | 2018-12-17 | 소니 주식회사 | 무선 통신 장치, 통신 방법 및 비일시적 컴퓨터 판독가능 기록 매체 |
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 |
US9596014B2 (en) * | 2014-01-28 | 2017-03-14 | Lg Electronics Inc. | Method and apparatus for cancelling interference |
KR20160044959A (ko) * | 2014-10-16 | 2016-04-26 | 삼성에스디에스 주식회사 | Wave 기반의 안테나 제어 장치 및 제어방법 |
US10505595B2 (en) * | 2015-02-27 | 2019-12-10 | Newracom, Inc. | Mixed fine/coarse sounding methods for HE STAs for MIMO and OFDMA |
US10219169B1 (en) * | 2015-07-09 | 2019-02-26 | Quantenna Communications, Inc. | Hybrid MU-MIMO spatial mapping using both explicit sounding and crosstalk tracking in a wireless local area network |
BR112018074562A2 (pt) * | 2016-06-28 | 2019-03-12 | Intel IP Corporation | negociação de protocolo de medição de temporização fina melhorada |
US11356160B2 (en) | 2018-01-03 | 2022-06-07 | Lg Electronics Inc. | Method for transmitting and receiving signal in wireless LAN system and apparatus therefor |
WO2019234478A1 (en) * | 2018-06-08 | 2019-12-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Sdma carrier sharing |
JP2022047547A (ja) * | 2019-01-11 | 2022-03-25 | ソニーグループ株式会社 | 無線基地局、および端末装置 |
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2014
- 2014-09-11 US US14/484,079 patent/US9906281B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
US9906281B2 (en) | 2018-02-27 |
US8891653B2 (en) | 2014-11-18 |
US20120230443A1 (en) | 2012-09-13 |
US20150029986A1 (en) | 2015-01-29 |
WO2011059248A2 (ko) | 2011-05-19 |
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