BR112013006485A2 - técnicas para sondagem mimo de múltiplos usuários em redes sem fio - Google Patents

técnicas para sondagem mimo de múltiplos usuários em redes sem fio

Info

Publication number
BR112013006485A2
BR112013006485A2 BR112013006485A BR112013006485A BR112013006485A2 BR 112013006485 A2 BR112013006485 A2 BR 112013006485A2 BR 112013006485 A BR112013006485 A BR 112013006485A BR 112013006485 A BR112013006485 A BR 112013006485A BR 112013006485 A2 BR112013006485 A2 BR 112013006485A2
Authority
BR
Brazil
Prior art keywords
user
techniques
wireless networks
minimum
over wireless
Prior art date
Application number
BR112013006485A
Other languages
English (en)
Other versions
BR112013006485B1 (pt
Inventor
Michelle X Gong
Robert J Stacey
Solomon Trainin
Original Assignee
Intel Corp
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 Intel Corp filed Critical Intel Corp
Publication of BR112013006485A2 publication Critical patent/BR112013006485A2/pt
Publication of BR112013006485B1 publication Critical patent/BR112013006485B1/pt

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
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H04W74/06—Scheduled access using polling
    • 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
    • H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot 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
    • H04B7/0621—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
    • 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
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

técnicas para sondagem mimo de múltiplos usuários em redes sem fio. uma modalidade da presente invenção provê um equipamento, compreendendo um transceptor operável como um ponto de acesso e capax de se comunicar em uma rede sem fio, o ap é adaptado para executar uma transmissão de múltiplas entradas e múltiplas saídas de múltiplos usuários de downlink (dl mu-mimo) e é adaptado adicionalmente para transmitir um pacote de dados nulo (ndp) para sondar canais entre estações (stas) sem fio de destino pretendidas, e em após uma transmissão de dl mu-mimo do ndp, o ap consulta cada uma das stas por informação de extado de canal.
BR112013006485-4A 2010-09-24 2011-09-26 Técnicas para sondagem mimo de múltiplos usuários em redes sem fio BR112013006485B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/890,102 2010-09-24
US12/890,102 US8976877B2 (en) 2010-09-24 2010-09-24 Techniques for multi-user MIMO sounding in wireless networks
PCT/US2011/053332 WO2012040739A1 (en) 2010-09-24 2011-09-26 Techniques for multi-user mimo sounding in wireless networks

Publications (2)

Publication Number Publication Date
BR112013006485A2 true BR112013006485A2 (pt) 2016-07-26
BR112013006485B1 BR112013006485B1 (pt) 2021-09-28

Family

ID=45870614

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112013006485-4A BR112013006485B1 (pt) 2010-09-24 2011-09-26 Técnicas para sondagem mimo de múltiplos usuários em redes sem fio

Country Status (7)

Country Link
US (1) US8976877B2 (pt)
EP (1) EP2619921A4 (pt)
JP (1) JP5592017B2 (pt)
KR (1) KR101464091B1 (pt)
CN (1) CN103109469B (pt)
BR (1) BR112013006485B1 (pt)
WO (1) WO2012040739A1 (pt)

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* Cited by examiner, † Cited by third party
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US8976877B2 (en) 2010-09-24 2015-03-10 Intel Corporation Techniques for multi-user MIMO sounding in wireless networks
US9806848B2 (en) 2010-09-29 2017-10-31 Qualcomm Incorporated Systems, methods and apparatus for determining control field and modulation coding scheme information
US9882624B2 (en) 2010-09-29 2018-01-30 Qualcomm, Incorporated Systems and methods for communication of channel state information
US9374193B2 (en) 2010-09-29 2016-06-21 Qualcomm Incorporated Systems and methods for communication of channel state information
US9602298B2 (en) 2010-09-29 2017-03-21 Qualcomm Incorporated Methods and apparatuses for determining a type of control field
US9813135B2 (en) * 2010-09-29 2017-11-07 Qualcomm, Incorporated Systems and methods for communication of channel state information
US9831983B2 (en) 2010-09-29 2017-11-28 Qualcomm Incorporated Systems, methods and apparatus for determining control field and modulation coding scheme information
US9077498B2 (en) 2010-09-29 2015-07-07 Qualcomm Incorporated Systems and methods for communication of channel state information
US10090982B2 (en) 2010-09-29 2018-10-02 Qualcomm Incorporated Systems and methods for communication of channel state information
KR101099345B1 (ko) 2010-12-01 2011-12-26 엘지전자 주식회사 무선랜 시스템에서 채널 사운딩 방법 및 장치
CN103891342B (zh) * 2011-08-18 2018-04-24 马维尔国际贸易有限公司 用于wlan的信号字段设计
US9608789B2 (en) * 2012-05-11 2017-03-28 Interdigital Patent Holdings, Inc. Method and apparatus for transmitting acknowledgements in response to received frames
WO2014011006A1 (ko) * 2012-07-13 2014-01-16 엘지전자 주식회사 무선랜 시스템에서 널 데이터 패킷 프레임을 이용하는 채널 액세스 방법 및 장치
WO2014182137A1 (ko) * 2013-05-10 2014-11-13 한국전자통신연구원 무선랜 시스템에서의 채널 사운딩 방법 및 이를 지원하는 장치
US20150124677A1 (en) * 2013-11-04 2015-05-07 Qualcomm Incorporated Definition of different ndp ps-poll types
US9825678B2 (en) 2013-11-26 2017-11-21 Marvell World Trade Ltd. Uplink multi-user multiple input multiple output for wireless local area network
US9473341B2 (en) 2013-11-27 2016-10-18 Marvell World Trade Ltd. Sounding and tone block allocation for orthogonal frequency multiple access (OFDMA) in wireless local area networks
US9166660B2 (en) * 2013-11-27 2015-10-20 Marvell World Trade Ltd. Uplink multi-user multiple input multiple output beamforming
WO2015102180A1 (ko) * 2014-01-06 2015-07-09 엘지전자 주식회사 무선 통신 시스템에서 사운딩 방법 및 장치
WO2015165070A1 (zh) * 2014-04-30 2015-11-05 华为技术有限公司 信道测量方法、信道测量装置、用户设备及***
EP3138226B1 (en) 2014-05-02 2020-07-08 NXP USA, Inc. Multiple user allocation signaling in a wireless communication network
US9788317B2 (en) * 2015-03-30 2017-10-10 Intel IP Corporation Access point (AP), user station (STA) and method for channel sounding using sounding trigger frames
US10143003B2 (en) * 2015-10-15 2018-11-27 Samsung Electronics Co., Ltd. Methods and apparatus for beamforming feedback in wireless systems
CN107027145B (zh) * 2016-02-01 2021-01-01 华为技术有限公司 信道测量方法及装置
US10616783B2 (en) 2016-05-10 2020-04-07 Samsung Electronics Co., Ltd Device grouping based on reported channel information and communication performance
DE112017006778T5 (de) * 2017-01-10 2019-10-31 Intel IP Corporation Differenzialcodierung mehrerer bits für einen nulldatenpaket- (ndp)feedbackbericht
US11096132B2 (en) * 2018-07-26 2021-08-17 Mediatek Singapore Pte. Ltd. Joint sounding for multi-user communication in multi-AP WLAN

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Publication number Priority date Publication date Assignee Title
JP4455389B2 (ja) * 2005-04-01 2010-04-21 株式会社エヌ・ティ・ティ・ドコモ 無線通信装置及び無線通信方法
US20080002733A1 (en) 2006-06-30 2008-01-03 Ilan Sutskover Method and apparatus for scheduling transmissions in multiple access wireless networks
US8842606B2 (en) 2007-08-31 2014-09-23 Koninklijke Philips N.V. Enhanced multi-user transmission
US8498362B2 (en) 2008-02-01 2013-07-30 Marvell World Trade Ltd. Channel sounding and estimation strategies for antenna selection in MIMO systems
JP2010081360A (ja) 2008-09-26 2010-04-08 Toshiba Corp 無線通信装置および無線通信方法
US9197298B2 (en) * 2009-06-05 2015-11-24 Broadcom Corporation Group identification and definition within multiple user, multiple access, and/or MIMO wireless communications
WO2011005004A2 (en) * 2009-07-07 2011-01-13 Lg Electronics Inc. Method and apparatus for indicating destination stations in wlan system supporting multi-user multiple input multiple output
US8848624B2 (en) * 2009-08-17 2014-09-30 Broadcom Corporation Multi-user uplink communications within multiple user, multiple access, and/or MIMO wireless communication systems
US20110222473A1 (en) * 2009-09-18 2011-09-15 Qualcomm Incorporated Protocol to support adaptive station-dependent channel state information feedback rate in multi-user communication systems
WO2011068985A1 (en) * 2009-12-02 2011-06-09 Marvell World Trade Ltd. Method and apparatus for sounding multiple stations
US9742590B2 (en) 2010-07-07 2017-08-22 Qualcomm Incorporated Channel state information (CSI) feedback protocol for multiuser multiple input, multiple output (MU-MIMO)
US9337954B2 (en) * 2010-07-28 2016-05-10 Qualcomm Incorporated Protocol for channel state information feedback
US9088393B2 (en) * 2010-07-30 2015-07-21 Lg Electronics Inc. Method and apparatus for reporting channel state information of multi-channel in wireless local area network system
US9131395B2 (en) * 2010-09-08 2015-09-08 Broadcom Corporation Acknowledgment and/or receiver recovery mechanisms for scheduled responses within multiple user, multiple access, and/or MIMO wireless communications
US8976877B2 (en) 2010-09-24 2015-03-10 Intel Corporation Techniques for multi-user MIMO sounding in wireless networks

Also Published As

Publication number Publication date
JP5592017B2 (ja) 2014-09-17
KR101464091B1 (ko) 2014-11-21
WO2012040739A1 (en) 2012-03-29
EP2619921A1 (en) 2013-07-31
KR20130042582A (ko) 2013-04-26
EP2619921A4 (en) 2014-03-26
US20120076179A1 (en) 2012-03-29
US8976877B2 (en) 2015-03-10
JP2013543681A (ja) 2013-12-05
CN103109469B (zh) 2016-05-25
BR112013006485B1 (pt) 2021-09-28
CN103109469A (zh) 2013-05-15

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Legal Events

Date Code Title Description
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04B 7/04 , H04W 88/08

Ipc: H04B 7/0452 (2017.01), H04B 7/06 (2006.01), H04W 7

B350 Update of information on the portal [chapter 15.35 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/09/2011, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO.