JP2011518491A - Ｍｉｍｏシステムにおけるモード適応方法 - Google Patents

Ｍｉｍｏシステムにおけるモード適応方法 Download PDF

Info

Publication number
JP2011518491A
JP2011518491A JP2011502868A JP2011502868A JP2011518491A JP 2011518491 A JP2011518491 A JP 2011518491A JP 2011502868 A JP2011502868 A JP 2011502868A JP 2011502868 A JP2011502868 A JP 2011502868A JP 2011518491 A JP2011518491 A JP 2011518491A
Authority
JP
Japan
Prior art keywords
mimo
mode
feedback
terminal
base station
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2011502868A
Other languages
English (en)
Japanese (ja)
Other versions
JP2011518491A5 (https=
Inventor
ウク ボン リー，
ジン ヨン チュン，
スン ホ パク，
ムン イル リー，
ヒュン ソー コ，
ビン チュル イム，
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of JP2011518491A publication Critical patent/JP2011518491A/ja
Publication of JP2011518491A5 publication Critical patent/JP2011518491A5/ja
Pending legal-status Critical Current

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
    • H04B7/0417—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
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H04B7/065—Variable contents, e.g. long-term or short-short

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
JP2011502868A 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法 Pending JP2011518491A (ja)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
US4277808P 2008-04-07 2008-04-07
US61/042,778 2008-04-07
US5059108P 2008-05-05 2008-05-05
US61/050,591 2008-05-05
US7413208P 2008-06-19 2008-06-19
US61/074,132 2008-06-19
KR1020080081244A KR101537591B1 (ko) 2008-04-07 2008-08-20 Ｍｉｍｏ 시스템에서 모드 적응 방법
KR10-2008-0081244 2008-08-20
US15116109P 2009-02-09 2009-02-09
US61/151,161 2009-02-09
PCT/KR2009/001767 WO2009125954A1 (en) 2008-04-07 2009-04-06 Method for mode adaptation in mimo system

Publications (2)

Publication Number Publication Date
JP2011518491A true JP2011518491A (ja) 2011-06-23
JP2011518491A5 JP2011518491A5 (https=) 2012-02-23

Family

ID=41162048

Family Applications (3)

Application Number Title Priority Date Filing Date
JP2011502868A Pending JP2011518491A (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法
JP2011502869A Expired - Fee Related JP5567550B2 (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法
JP2011500712A Expired - Fee Related JP5427878B2 (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムでコードブックを用いてフィードバックを行うフィードバック方法

Family Applications After (2)

Application Number Title Priority Date Filing Date
JP2011502869A Expired - Fee Related JP5567550B2 (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法
JP2011500712A Expired - Fee Related JP5427878B2 (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムでコードブックを用いてフィードバックを行うフィードバック方法

Country Status (7)

Country Link
US (4) US8111662B2 (https=)
EP (3) EP2245758A4 (https=)
JP (3) JP2011518491A (https=)
KR (1) KR101537591B1 (https=)
CN (3) CN101981823B (https=)
MY (1) MY154092A (https=)
WO (3) WO2009125956A1 (https=)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0682229B2 (ja) 1991-01-11 1994-10-19 ミノルタ株式会社 静電潜像現像剤用キヤリア
EP2117243B1 (en) * 2007-02-02 2018-05-09 Mitsubishi Electric Corporation Communication method, base station, communication system, mobile terminal
WO2009026770A1 (en) * 2007-08-31 2009-03-05 Fujitsu Limited Feedback apparatus, feedback method, scheduling apparatus, and scheduling method
KR101537591B1 (ko) * 2008-04-07 2015-07-20 엘지전자 주식회사 Ｍｉｍｏ 시스템에서 모드 적응 방법
US8644288B2 (en) * 2008-07-31 2014-02-04 Motorola Mobility Llc Uplink spatial division multiple access (SDMA) user pairing and scheduling
GB2467303B (en) * 2008-08-07 2012-07-11 Icera Inc Feedback in a wireless communication system
WO2010061248A1 (en) * 2008-11-28 2010-06-03 Freescale Semiconductor, Inc. Allocation of communication channels
CN101902305B (zh) * 2009-05-25 2013-10-30 富士通株式会社 通信装置、通信方法和基站
US8665817B2 (en) 2009-10-14 2014-03-04 Lg Electronics Inc. Method and apparatus for mode switching between a multi-cell coordinated communication mode and a single-cell MIMO communication mode
US8811516B2 (en) 2009-10-30 2014-08-19 Nokia Corporation Channel feedback to support efficient rank override
KR101409042B1 (ko) * 2009-11-25 2014-06-18 엔이씨 유럽 리미티드 셀룰러 무선 시스템을 동작시키는 방법 및 셀룰러 무선 시스템
US9379867B2 (en) * 2009-12-30 2016-06-28 Samsung Electronics Co., Ltd. Apparatus and method for efficiently operating fast feedback channel in wireless communication system
US9059819B2 (en) * 2010-02-12 2015-06-16 Qualcomm Incorporated Flexible uplink control channel configuration
CN101800628B (zh) * 2010-02-12 2015-09-16 中兴通讯股份有限公司 一种获取信道状态信息的方法和系统
US20110305209A1 (en) * 2010-03-09 2011-12-15 Qualcomm Incorporated Rate adaptation for sdma
BR112012024653B1 (pt) * 2010-04-02 2022-06-07 Koninklijke Philips N.V. Método para operar uma estação secundária e estação secundária
CN101807981B (zh) * 2010-04-02 2015-05-20 中兴通讯股份有限公司 码本使用的预处理方法及通讯系统
EP2556712B1 (en) * 2010-04-05 2020-09-09 Nokia Technologies Oy Channel state information feedback for enhanced downlink multiple input - multiple output operation
GB2479377B (en) * 2010-04-07 2013-08-14 Toshiba Res Europ Ltd Dual indicator scheme for channel state information feedback
JP2013526190A (ja) * 2010-04-29 2013-06-20 富士通株式会社 プリコーディング行列情報をフィードバックする方法及び移動端末
JP5324526B2 (ja) * 2010-06-18 2013-10-23 シャープ株式会社 端末装置、基地局装置、通信システム、および処理方法
KR20110138742A (ko) * 2010-06-21 2011-12-28 주식회사 팬택 장치의 채널정보 전송방법, 그 장치, 기지국, 그 기지국의 전송방법
US8891652B2 (en) 2010-06-24 2014-11-18 Qualcomm Incorporated Structured MIMO codebook
WO2012002758A2 (ko) 2010-07-01 2012-01-05 엘지전자 주식회사 무선랜 시스템에서 mimo 패킷을 송수신하는 방법 및 장치
KR20120003781A (ko) 2010-07-05 2012-01-11 주식회사 팬택 송신장치 및 그 통신방법, 수신장치, 그 통신방법
US8547955B2 (en) * 2010-07-28 2013-10-01 Intel Corporation Feedback scheme for MU-MIMO
US9509391B2 (en) * 2010-09-08 2016-11-29 Qualcomm Incorporated Sounding feedback schemes for very high throughput wireless systems
US9042841B2 (en) 2010-09-17 2015-05-26 Samsung Electronics Co., Ltd. System and method for PUCCH subband feedback signaling in a wireless network
USRE47631E1 (en) 2010-09-17 2019-10-01 Samsung Electronics Co., Ltd. System and method for PUCCH subband feedback signaling in a wireless network
JP5666871B2 (ja) * 2010-10-12 2015-02-12 シャープ株式会社 無線通信システム、基地局装置、無線通信方法
CN102457361B (zh) * 2010-10-27 2014-09-10 中兴通讯股份有限公司 一种支持多种发射方式的方法和基站
KR20150038671A (ko) * 2010-12-02 2015-04-08 인터디지탈 패튼 홀딩스, 인크 간섭 예측을 사용하여 무선 통신에서 채널 품질 표시 피드백 정확도를 향상시키는 시스템 및 방법
KR101684925B1 (ko) * 2010-12-21 2016-12-20 삼성전자주식회사 기지국 및 단말의 통신 방법
CN102624497B (zh) * 2011-01-30 2016-05-25 华为技术有限公司 码本生成方式的确定方法和装置
JP6026082B2 (ja) 2011-04-05 2016-11-16 シャープ株式会社 端末、基地局、通信方法および集積回路
EP2702700A4 (en) 2011-04-29 2015-12-16 Intel Corp CSI FEEDBACK TECHNOLOGY IN A MIMO COMMUNICATION SYSTEM
US8798011B2 (en) * 2011-04-29 2014-08-05 Nec Laboratories America, Inc. Enhancement of download multi-user multiple-input multiple-output wireless communications
WO2012148443A1 (en) 2011-04-29 2012-11-01 Intel Corporation System and method of rank adaptation in mimo communication system
CN102664660B (zh) * 2012-04-12 2014-12-10 电信科学技术研究院 一种传输方式的选择方法和设备
JP5899043B2 (ja) * 2012-05-07 2016-04-06 株式会社Ｎｔｔドコモ コードブック適合方法、無線基地局装置及びユーザ装置
US8885752B2 (en) * 2012-07-27 2014-11-11 Intel Corporation Method and apparatus for feedback in 3D MIMO wireless systems
US9363686B2 (en) 2012-12-06 2016-06-07 Qualcomm Incorporated Method and system for unified rate adaptation for SU-BF and MU-MIMO operation
US9112737B2 (en) * 2013-03-06 2015-08-18 Qualcomm Incorporated Systems and methods for determining a channel variation metric
CN105122869B (zh) * 2013-04-08 2019-06-14 Lg电子株式会社 在无线通信系统中针对部分波束成形报告信道状态信息的方法和设备
KR102157652B1 (ko) * 2013-04-29 2020-09-18 엘지전자 주식회사 무선 통신 시스템에서 채널상태정보 전송 방법 및 장치
US9787376B2 (en) 2014-01-06 2017-10-10 Intel IP Corporation Systems, methods, and devices for hybrid full-dimensional multiple-input multiple-output
WO2016036205A2 (ko) * 2014-09-04 2016-03-10 삼성전자주식회사 무선 통신 시스템에서 피드백 정보 송신을 위한 장치 및 방법
KR102487525B1 (ko) * 2014-09-04 2023-01-12 삼성전자주식회사 무선 통신 시스템에서 피드백 정보 송신을 위한 장치 및 방법
US9847230B2 (en) * 2015-06-09 2017-12-19 The Charles Stark Draper Laboratory, Inc. Method and apparatus for using universal cavity wafer in wafer level packaging
US20170222710A1 (en) * 2016-01-28 2017-08-03 Qualcomm Incorporated Trigger frame for changing modes of operation
GB2548335B (en) * 2016-03-08 2020-07-01 Cambium Networks Ltd Method and apparatus for channel sounding for a MU-MIMO wireless communication network
EP3301824B1 (en) * 2016-09-28 2020-06-17 Intel IP Corporation Communication network component and method for requesting channel information
US20190007180A1 (en) * 2017-06-30 2019-01-03 Qualcomm Incorporated Apparatus and method for sub-channel selection based on a number of electronic devices of a wireless network
EP3553968A1 (en) * 2018-04-13 2019-10-16 Peraso Technologies Inc. Single-carrier wideband beamforming method and system
US10849143B2 (en) 2019-03-12 2020-11-24 Cisco Technology, Inc. Machine learning (ML) based client behavior prediction for multi-user (MU) scheduler optimization
US12156121B1 (en) * 2019-03-20 2024-11-26 Sprint Spectrum Lp Performing MU-MIMO in wireless communication networks

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007105928A1 (en) * 2006-03-16 2007-09-20 Samsung Electronics Co., Ltd. Method for transmitting/receiving feedback information in a multi-antenna system supporting multiple users, and feedback system supporting the same
WO2008002109A1 (en) * 2006-06-30 2008-01-03 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving data in a closed-loop multi-antenna system

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6862271B2 (en) 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
EP1508992A3 (en) 2003-08-18 2008-05-21 Samsung Electronics Co., Ltd. Apparatus and method for scheduling resource in a multiuser MIMO radio communication system
US8249518B2 (en) * 2003-12-29 2012-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Network controlled feedback for MIMO systems
CN100539462C (zh) 2004-04-05 2009-09-09 北方电讯网络有限公司 用于支持正交频分复用应用中的多输入多输出传输的方法
CN1691539A (zh) * 2004-04-30 2005-11-02 皇家飞利浦电子股份有限公司 用于多入多出无线通信系统的通用多入多出－联合检测方法和装置
JP4616338B2 (ja) 2004-06-14 2011-01-19 サムスン エレクトロニクス カンパニー リミテッド 多重送受信アンテナを使用する移動通信システムにおける送信モードを制御するための装置，システム及び方法
EP3313001A1 (en) 2004-06-22 2018-04-25 Apple Inc. Closed loop mimo systems and methods
KR101161873B1 (ko) 2004-09-07 2012-07-03 더 보드 오브 리전츠 오브 더 유니버시티 오브 텍사스 시스템 적응적 전송모드 전환 방식을 이용한 다중입출력 통신시스템
US7684762B2 (en) * 2004-10-18 2010-03-23 Lg Electronics Inc. Method of transmitting feedback information in an orthogonal frequency division multiplexing (OFDM)/OFDM access (OFDMA) mobile communication system
KR101073909B1 (ko) 2005-03-04 2011-10-17 엘지전자 주식회사 광대역 무선접속 시스템에서의 ｍｉｍｏ 모드 피드백 방법
US8189714B2 (en) 2005-05-04 2012-05-29 Rockstar Bidco, LP Wireless feedback system and method
KR20060130806A (ko) * 2005-06-08 2006-12-20 삼성전자주식회사 코드북 기반 폐루프 방식의 다중 송수신 안테나 시스템에서송수신 장치 및 방법
US8116267B2 (en) * 2006-02-09 2012-02-14 Samsung Electronics Co., Ltd. Method and system for scheduling users based on user-determined ranks in a MIMO system
US8059609B2 (en) * 2006-03-20 2011-11-15 Qualcomm Incorporated Resource allocation to support single-user and multi-user MIMO transmission
US7941186B2 (en) * 2006-07-25 2011-05-10 Samsung Electronics Co., Ltd. Apparatus and method for scheduling multiuser/single user in multiple input multiple output (MIMO) system
WO2008021062A1 (en) 2006-08-11 2008-02-21 Interdigital Technology Corporation Wireless communication method and system for indexing codebook and codeword feedback
JP5006001B2 (ja) 2006-08-22 2012-08-22 株式会社エヌ・ティ・ティ・ドコモ 下りリンクｍｉｍｏ伝送制御方法および基地局装置
JP4594361B2 (ja) 2006-08-31 2010-12-08 三星電子株式会社 多重アンテナシステムにおけるデータ送受信装置及び方法とそれを支援するシステム
KR100938088B1 (ko) * 2006-11-01 2010-01-21 삼성전자주식회사 무선 패킷 데이터 통신 시스템에서의 피드백 정보 송수신방법 및 장치
US8073069B2 (en) * 2007-01-05 2011-12-06 Apple Inc. Multi-user MIMO-SDMA for finite rate feedback systems
WO2008118067A2 (en) * 2007-03-26 2008-10-02 Telefonaktiebolaget Lm Ericsson (Publ) Preparation phase for switching between su-mimo and mu-mimo
US8498356B2 (en) * 2007-04-13 2013-07-30 Samsung Electronics Co., Ltd. Apparatus and method of generating codebook for multiple input multiple output communication system
US20080267056A1 (en) * 2007-04-26 2008-10-30 Motorola, Inc. Method and apparatus for performing multi-antenna transmission
US8687561B2 (en) * 2007-05-04 2014-04-01 Motorola Mobility Llc Method and system for link adaptation using metric feedback
US7649831B2 (en) 2007-05-30 2010-01-19 Samsung Electronics Co., Ltd. Multi-user MIMO feedback and transmission in a wireless communication system
US8325839B2 (en) * 2007-06-26 2012-12-04 Samsung Electronics Co., Ltd. Simple MIMO precoding codebook design for a MIMO wireless communications system
EP2903178B1 (en) * 2007-06-27 2019-06-19 Unwired Planet International Limited Method and arrangements in a telecommunication system supporting MU-MIMO and SU-MIMO
US8098752B2 (en) * 2007-07-31 2012-01-17 Samsung Electronics Co., Ltd. Apparatus and method for supporting a plurality of MIMO modes in a wireless communication system
US20090046801A1 (en) * 2007-08-14 2009-02-19 Interdigital Technology Corporation Method and apparatus for creating a multi-user mimo codebook using a single user mimo codebook
WO2009026770A1 (en) 2007-08-31 2009-03-05 Fujitsu Limited Feedback apparatus, feedback method, scheduling apparatus, and scheduling method
JP5387575B2 (ja) * 2007-08-31 2014-01-15 富士通株式会社 無線通信システム及び無線通信方法
US8254486B2 (en) * 2007-09-28 2012-08-28 Intel Corporation Unified closed loop SU/MU-MIMO signaling and codebook design
CN101442349B (zh) * 2007-11-21 2013-02-20 三星电子株式会社 多用户mimo码本子集选择方法
KR101537591B1 (ko) * 2008-04-07 2015-07-20 엘지전자 주식회사 Ｍｉｍｏ 시스템에서 모드 적응 방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007105928A1 (en) * 2006-03-16 2007-09-20 Samsung Electronics Co., Ltd. Method for transmitting/receiving feedback information in a multi-antenna system supporting multiple users, and feedback system supporting the same
WO2008002109A1 (en) * 2006-06-30 2008-01-03 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving data in a closed-loop multi-antenna system

Also Published As

Publication number Publication date
US20090257383A1 (en) 2009-10-15
US8111662B2 (en) 2012-02-07
CN101981824B (zh) 2014-04-02
KR20090106975A (ko) 2009-10-12
EP2245758A1 (en) 2010-11-03
KR101537591B1 (ko) 2015-07-20
EP2248277A4 (en) 2014-05-07
EP2248278A4 (en) 2014-05-07
WO2009125954A1 (en) 2009-10-15
JP2011517524A (ja) 2011-06-09
WO2009125956A1 (en) 2009-10-15
US20090268698A1 (en) 2009-10-29
EP2248278B1 (en) 2016-08-31
US20120008613A1 (en) 2012-01-12
CN101981823B (zh) 2015-07-08
CN101981823A (zh) 2011-02-23
EP2245758A4 (en) 2014-05-07
US8045528B2 (en) 2011-10-25
CN101981824A (zh) 2011-02-23
US20090257384A1 (en) 2009-10-15
CN101981825A (zh) 2011-02-23
JP5427878B2 (ja) 2014-02-26
JP2011518492A (ja) 2011-06-23
US8811355B2 (en) 2014-08-19
JP5567550B2 (ja) 2014-08-06
WO2009125955A1 (en) 2009-10-15
EP2248278A1 (en) 2010-11-10
MY154092A (en) 2015-04-30
EP2248277A1 (en) 2010-11-10

Similar Documents

Publication Publication Date Title
JP5567550B2 (ja) Ｍｉｍｏシステムにおけるモード適応方法
JP5534039B2 (ja) コードブックによるチャネル情報フィードバック方法、機器及びシステム
JP5676646B2 (ja) チャネル状態情報のフィードバック伝送方法及びユーザ端末
CN103125083B (zh) 在多用户多输入多输出（mu-mimo）通信系统中用于反馈的方法和装置
CN102859919B (zh) 用于mu-mimo的低开销pmi和cqi反馈和配对方法及设备
CN104782065B (zh) 用于减轻下行链路干扰的方法和无线终端
EP2665198B1 (en) Codebook based downlink multi-user interference alignment scheme
US8811519B2 (en) Data transmission method and apparatus in MIMO communication system
CA2826243C (en) Mixed rank downlink compound multi-user interference alignment scheme
KR20130027549A (ko) 채널 상태 정보의 피드백 방법 및 단말
KR20160142876A (ko) 무선 통신 시스템들에서 채널 상태 정보를 보고하기 위한 방법 및 장치
WO2009084921A2 (en) Method for transmitting and receiving signals using collaborative mimo scheme
KR20110048226A (ko) 네트워크 다중 입출력 시스템에서 협력 멀티 포인트 송신을 위한 동적 채널 피드백 제어 방법
WO2012041102A1 (zh) 反馈信道信息的方法及终端
US9686005B2 (en) Method and apparatus for feeding back channel estimation in multi-input multi-output system
US11012125B2 (en) Signal sending and receiving method to pair user equipment
CN107404345A (zh) 一种无线通信中的方法和装置

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120105

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120105

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130904

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130913

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131212

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140117

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140813