CA2707748C - Weighting factor reporting method in a mimo mobile communications system, and base station and user apparatus that are suitable for use in the method - Google Patents

Weighting factor reporting method in a mimo mobile communications system, and base station and user apparatus that are suitable for use in the method Download PDF

Info

Publication number
CA2707748C
CA2707748C CA2707748A CA2707748A CA2707748C CA 2707748 C CA2707748 C CA 2707748C CA 2707748 A CA2707748 A CA 2707748A CA 2707748 A CA2707748 A CA 2707748A CA 2707748 C CA2707748 C CA 2707748C
Authority
CA
Canada
Prior art keywords
pmi
base station
user apparatus
information
signal
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.)
Active
Application number
CA2707748A
Other languages
English (en)
French (fr)
Other versions
CA2707748A1 (en
Inventor
Hidekazu Taoka
Nobuhiko Miki
Kenichi Higuchi
Mamoru Sawahashi
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.)
NTT Docomo Inc
Original Assignee
NTT Docomo 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 NTT Docomo Inc filed Critical NTT Docomo Inc
Publication of CA2707748A1 publication Critical patent/CA2707748A1/en
Application granted granted Critical
Publication of CA2707748C publication Critical patent/CA2707748C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04B7/0456—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
    • H04B7/0619—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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
CA2707748A 2008-01-08 2008-12-26 Weighting factor reporting method in a mimo mobile communications system, and base station and user apparatus that are suitable for use in the method Active CA2707748C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008-001665 2008-01-08
JP2008001665A JP4652420B2 (ja) 2008-01-08 2008-01-08 ユーザ装置、送信方法、および移動通信システム
PCT/JP2008/073774 WO2009087933A1 (ja) 2008-01-08 2008-12-26 Ｍｉｍｏ方式の移動体通信システムにおける重み係数通知方法、並びにこの方法の使用に好適な基地局およびユーザ装置

Publications (2)

Publication Number Publication Date
CA2707748A1 CA2707748A1 (en) 2009-07-16
CA2707748C true CA2707748C (en) 2016-04-12

Family

ID=40853055

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2707748A Active CA2707748C (en) 2008-01-08 2008-12-26 Weighting factor reporting method in a mimo mobile communications system, and base station and user apparatus that are suitable for use in the method

Country Status (9)

Country Link
US (1) US9130616B2 (https=)
EP (2) EP2811661B1 (https=)
JP (1) JP4652420B2 (https=)
KR (1) KR101525057B1 (https=)
CN (2) CN103354464B (https=)
BR (1) BRPI0822233A2 (https=)
CA (1) CA2707748C (https=)
RU (2) RU2010130429A (https=)
WO (1) WO2009087933A1 (https=)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9402247B2 (en) 2008-10-20 2016-07-26 Interdigital Patent Holdings, Inc. Uplink control information transmission methods for carrier aggregation
CN105245312B (zh) * 2009-06-19 2019-05-07 交互数字专利控股公司 在lte-a中用信号发送上行链路控制信息的方法及单元
CN102244566B (zh) * 2010-05-11 2014-03-12 中兴通讯股份有限公司 用于多输入多输出系统的下行传输方法和基站
US8787484B2 (en) * 2010-06-18 2014-07-22 Nec Corporation Precoding techniques for downlink coordinated multipoint transmission in radio communications system
US8639198B2 (en) * 2010-06-30 2014-01-28 Samsung Electronics Co., Ltd. Systems and methods for 8-TX codebook and feedback signaling in 3GPP wireless networks
CN103534965A (zh) * 2011-05-10 2014-01-22 Nec卡西欧移动通信株式会社 移动站装置和通信方法、以及计算机程序
JP5753022B2 (ja) * 2011-08-15 2015-07-22 株式会社Ｎｔｔドコモ 無線通信システム、無線基地局装置、ユーザ端末及び無線通信方法
US9735848B2 (en) 2012-10-18 2017-08-15 Kyocera Corporation Mobile communication system and communication control method
JP6060978B2 (ja) * 2012-12-19 2017-01-18 富士通株式会社 無線通信装置および無線通信方法
EP3373469A4 (en) * 2015-11-03 2019-05-01 LG Electronics Inc. METHOD FOR INDICATING THE CHANNEL STATUS IN A WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR
KR102473191B1 (ko) 2016-03-10 2022-12-02 삼성전자주식회사 안테나를 포함하는 전자 장치
US12126466B2 (en) * 2022-03-09 2024-10-22 Qualcomm Incorporated Channel state feedback using demodulation reference signals

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2369017C2 (ru) * 2003-02-18 2009-09-27 Квэлкомм Инкорпорейтед Команды мультиплексирования с кодовым разделением в мультиплексном канале с кодовым разделением
JP2006033306A (ja) * 2004-07-15 2006-02-02 Sony Corp 無線通信装置およびその制御方法
CN1941660A (zh) * 2005-09-30 2007-04-04 松下电器产业株式会社 多天线无线通信系统中的多用户分集方法及系统
CN101411239B (zh) * 2006-04-06 2010-12-22 株式会社日立制作所 无线通信系统、无线基站装置和无线终端装置
US8498639B2 (en) * 2007-02-09 2013-07-30 Qualcomm Incorporated Flexible channel quality indicator reporting
WO2008115585A2 (en) * 2007-03-21 2008-09-25 Interdigital Technology Corporation Method and apparatus for communicating precoding or beamforming information to users in mimo wireless communication systems
US8290079B2 (en) * 2007-04-19 2012-10-16 Interdigital Technology Corporation Method and apparatus for precoding validation in wireless communications
BRPI0809746B1 (pt) * 2007-04-20 2020-06-16 Interdigital Technology Corporation Método e aparelho para sinalização de informações de controle em modo MIMO
US20080305745A1 (en) * 2007-06-05 2008-12-11 Interdigital Technology Corporation Method and apparatus for supporting uplink transmission of channel quality and coding information in a wireless communication system
US8325852B2 (en) * 2007-06-08 2012-12-04 Samsung Electronics Co., Ltd. CDD precoding for open loop SU MIMO
JP4729537B2 (ja) * 2007-06-19 2011-07-20 株式会社エヌ・ティ・ティ・ドコモ 基地局装置および送信方法
US8630184B2 (en) * 2007-08-15 2014-01-14 Qualcomm Incorporated Uplink control channel format
KR101476202B1 (ko) * 2008-01-08 2014-12-24 엘지전자 주식회사 주기적/비주기적 채널상태정보 송수신 방법
CN101217304B (zh) * 2008-01-10 2013-01-30 北京邮电大学 一种多子信道的多输入多输出预编码处理方法

Also Published As

Publication number Publication date
CN101911562A (zh) 2010-12-08
CN103354464A (zh) 2013-10-16
WO2009087933A1 (ja) 2009-07-16
RU2012142555A (ru) 2014-04-20
KR101525057B1 (ko) 2015-06-18
EP2234300A4 (en) 2014-07-09
EP2811661A1 (en) 2014-12-10
CA2707748A1 (en) 2009-07-16
US9130616B2 (en) 2015-09-08
KR20100097187A (ko) 2010-09-02
BRPI0822233A2 (pt) 2015-06-23
JP2009164975A (ja) 2009-07-23
EP2234300A1 (en) 2010-09-29
JP4652420B2 (ja) 2011-03-16
EP2811661B1 (en) 2016-07-20
CN101911562B (zh) 2013-08-21
RU2521614C2 (ru) 2014-07-10
EP2234300B1 (en) 2015-10-21
US20110013719A1 (en) 2011-01-20
RU2010130429A (ru) 2012-02-20
CN103354464B (zh) 2016-12-28

Similar Documents

Publication Publication Date Title
CA2707748C (en) Weighting factor reporting method in a mimo mobile communications system, and base station and user apparatus that are suitable for use in the method
US7139328B2 (en) Method and apparatus for closed loop data transmission
EP2899897B1 (en) Methods and systems for combined precoding and cyclic delay diversity
EP2966820B1 (en) Codeword to layer mapping in a system implementing harq
JP5647195B2 (ja) 多重入出力システムにおけるチャンネル品質情報フィードバック方法、データ伝送方法、ユーザ機器及び基地局
EP1821444B1 (en) Apparatus and method for transmission and reception in a multi-user MIMO communication system
RU2501163C1 (ru) Базовая станция (варианты), способ передачи (варианты) и система мобильной связи
US8891648B2 (en) System for transmitting and receiving channel state information
RU2560818C2 (ru) Способ и устройство для определения индикатора качества канала в сетях связи, работающих в режиме mu-mimo
RU2484589C2 (ru) Терминал пользователя, базовая станция и способ передачи сигнала, используемые в системе мобильной связи
US8000405B2 (en) Transmission method, transmission apparatus and communication system
US20100208779A1 (en) Transmitter for Reducing Channel Selectivity
US7782972B2 (en) Apparatus and method for selecting antennas in MIMO multi-carrier system
EP2983318B1 (en) Mobile station, base station, and communication control method
KR20150028335A (ko) 무선 통신 장치, 및 ｈａｒｑ 응답의 송신 방법 및 수신 방법
US20100309997A1 (en) Radio communication terminal device, radio communication base station device, and cqi feedback method
US8054869B2 (en) Reduced complexity frequency band and virtual antenna combination (VAC) selection
JP4800438B2 (ja) 基地局装置および通信方法
JP7260327B2 (ja) 無線通信システム、送信局及び受信局

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20131028

MPN Maintenance fee for patent paid

Free format text: FEE DESCRIPTION TEXT: MF (PATENT, 17TH ANNIV.) - STANDARD

Year of fee payment: 17

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20251215

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL

Effective date: 20251215