JP5129346B2 - コラボラティブ多入力多出力通信システムにおけるプリコーディングされた信号を送信する方法 - Google Patents
コラボラティブ多入力多出力通信システムにおけるプリコーディングされた信号を送信する方法 Download PDFInfo
- Publication number
- JP5129346B2 JP5129346B2 JP2010541388A JP2010541388A JP5129346B2 JP 5129346 B2 JP5129346 B2 JP 5129346B2 JP 2010541388 A JP2010541388 A JP 2010541388A JP 2010541388 A JP2010541388 A JP 2010541388A JP 5129346 B2 JP5129346 B2 JP 5129346B2
- Authority
- JP
- Japan
- Prior art keywords
- base station
- precoding matrix
- mobile station
- matrix index
- serving base
- 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.)
- Expired - Fee Related
Links
Images
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
- H04B7/06—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
-
- 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
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [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
-
- 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
- H04B7/0413—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
- H04B7/0621—Feedback content
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode 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
- H04B7/0613—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]
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)
Description
Claims (8)
- コラボラティブ多入力多出力(MIMO)通信システムにおいて、移動局による信号の受信スループットを向上させる方法であって、
サービング基地局及び少なくとも1つの隣接基地局のそれぞれに対するチャネルを推定するステップと、
前記推定されたチャネルに基づいて前記サービング基地局及び前記少なくとも1つの隣接基地局のそれぞれに対応するプリコーディング行列インデックス(PMI)を決定するステップと、
前記サービング基地局に前記プリコーディング行列インデックスを送信するステップと、
前記サービング基地局及び前記少なくとも1つの隣接基地局から、前記対応するプリコーディング行列インデックスによりプリコーディングされた信号を受信するステップと、
を有し、
前記プリコーディングされた信号は同一のデータを有する、受信スループットの向上方法。 - 前記プリコーディング行列インデックスを送信するステップは、前記サービング基地局に前記推定されたチャネルに対応するチャネル品質情報を送信するステップを有する、請求項1に記載の受信スループットの向上方法。
- 前記プリコーディング行列インデックスは、前記サービング基地局及び前記少なくとも1つの隣接基地局が共通に有しているコードブックに基づいて決定される、請求項1に記載の受信スループットの向上方法。
- 前記移動局は、マルチセル環境においてセルの縁部に位置する、請求項1に記載の受信スループットの向上方法。
- コラボラティブ多入力多出力(MIMO)通信システムにおいて、サービング基地局による移動局での信号の受信スループットを向上させる方法であって、
前記移動局から前記サービング基地局及び少なくとも1つの隣接基地局のそれぞれに対応するプリコーディング行列インデックスを受信するステップと、
前記少なくとも1つの隣接基地局に前記対応するプリコーディング行列インデックスを送信するステップと、
前記受信したプリコーディング行列インデックスのうち、前記対応するプリコーディング行列インデックスによりプリコーディングされた信号を前記移動局に送信するステップと、
を有し、
前記プリコーディングされた信号に含まれるデータは、前記少なくとも1つの隣接基地局から前記移動局に送信された信号に含まれるデータと同一である、移動局での受信スループットの向上方法。 - 前記プリコーディング行列インデックスを受信するステップは、前記サービング基地局への推定されたチャネルに対応するチャネル品質情報を受信するステップを有する、請求項5に記載の移動局での受信スループットの向上方法。
- 前記プリコーディング行列インデックスは、前記サービング基地局及び前記少なくとも1つの隣接基地局が共通に有しているコードブックに基づいて決定される、請求項5に記載の移動局での受信スループットの向上方法。
- 前記移動局は、マルチセル環境においてセルの縁部に位置する、請求項5に記載の移動局での受信スループットの向上方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2007-0141799 | 2007-12-31 | ||
KR1020070141799A KR100995045B1 (ko) | 2007-12-31 | 2007-12-31 | 협동 다중 입출력 통신 시스템에서, 프리코딩된 신호를송신하는 방법 |
PCT/KR2008/007795 WO2009084903A2 (en) | 2007-12-31 | 2008-12-30 | Method for transmitting precoded signal in collaborative multiple-input multiple-output communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011509040A JP2011509040A (ja) | 2011-03-17 |
JP5129346B2 true JP5129346B2 (ja) | 2013-01-30 |
Family
ID=40824905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010541388A Expired - Fee Related JP5129346B2 (ja) | 2007-12-31 | 2008-12-30 | コラボラティブ多入力多出力通信システムにおけるプリコーディングされた信号を送信する方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8755451B2 (ja) |
EP (1) | EP2227866A4 (ja) |
JP (1) | JP5129346B2 (ja) |
KR (1) | KR100995045B1 (ja) |
CN (1) | CN101911522B (ja) |
WO (1) | WO2009084903A2 (ja) |
Families Citing this family (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100991794B1 (ko) * | 2007-12-31 | 2010-11-03 | 엘지전자 주식회사 | 셀간 간섭 감소 방법 |
WO2009120048A2 (en) | 2008-03-28 | 2009-10-01 | Lg Electronics Inc. | Method for avoiding inter-cell interference in a multi-cell environment |
WO2010018958A2 (en) * | 2008-08-11 | 2010-02-18 | Electronics And Telecommunications Research Institute | Precoding matrix design method for multiple base station using mimo technique |
KR101204627B1 (ko) * | 2008-08-11 | 2012-11-23 | 한국전자통신연구원 | 다중 입력 다중 출력 시스템에서 다중 기지국 협력 통신을 위한 프리코딩 행렬 설계 방법 |
CN101729131B (zh) * | 2008-11-03 | 2014-06-04 | 夏普株式会社 | 无线通信系统及预编码方法 |
US20110287798A1 (en) * | 2009-01-30 | 2011-11-24 | Hitachi, Ltd. | Base Station and Wireless Communication System |
WO2010105683A1 (en) * | 2009-03-19 | 2010-09-23 | Nokia Siemens Networks Oy | Interference avoidance in mobile communication network employing distributed antenna system |
KR101293070B1 (ko) * | 2009-03-25 | 2013-08-05 | 알까뗄 루슨트 | 무선 통신 시스템에서 동일-채널 간섭을 제어하는 방법 및 장치 |
KR101800294B1 (ko) * | 2009-04-02 | 2017-12-20 | 삼성전자주식회사 | 다중 셀 통신 시스템에서 셀 가장자리 사용자의 에러를 최소화하기 위한 장치 및 방법 |
US20120052896A1 (en) * | 2009-04-28 | 2012-03-01 | Dong Li | Mobile communication method, base station and system employing hierarchical virtual antenna architecture |
KR101568291B1 (ko) * | 2009-07-10 | 2015-11-20 | 삼성전자주식회사 | 단말기 및 기지국, 및 단말기의 동작방법 |
CN102415120B (zh) * | 2009-08-18 | 2013-11-27 | 上海贝尔股份有限公司 | 协同多点传输方法及其设备 |
US8369791B2 (en) * | 2009-09-22 | 2013-02-05 | Telefonaktiebolaget L M Ericsson (Publ) | Multi-user beamforming with inter-cell interference suppression |
EP2481234A4 (en) * | 2009-09-24 | 2016-06-01 | Blackberry Ltd | X-MIMO SYSTEMS WITH MULTIPLE TRANSMITTERS AND MULTIPLE RECEIVERS |
US9961579B2 (en) | 2009-10-01 | 2018-05-01 | Qualcomm Incorporated | Scalable channel feedback for wireless communication |
US8781005B2 (en) | 2009-10-01 | 2014-07-15 | Qualcomm Incorporated | Scalable quantization of channel state information for MIMO transmission |
TWI429216B (zh) * | 2009-10-02 | 2014-03-01 | Mediatek Inc | 用於基於ofdma之多基地台mimo的連接預編碼器選擇之方法 |
JP5149257B2 (ja) * | 2009-10-02 | 2013-02-20 | シャープ株式会社 | 無線通信システム、通信装置および無線通信方法 |
JP5344046B2 (ja) * | 2009-10-08 | 2013-11-20 | 富士通株式会社 | 無線通信システム及び移動端末並びに協調通信方法 |
KR20110043401A (ko) * | 2009-10-19 | 2011-04-27 | 엘지전자 주식회사 | 다중 기지국 상향링크 mimo를 지원하는 무선 통신 시스템에 있어서, 상향링크 전송을 위한 프리코딩 정보를 전송 방법 및 이를 수행하는 장치 |
KR101651934B1 (ko) * | 2010-01-05 | 2016-09-09 | 삼성전자주식회사 | 다중 사용자 간섭 채널에서 발생하는 간섭을 제어하는 장치 |
CN102122977B (zh) * | 2010-01-11 | 2013-12-04 | 电信科学技术研究院 | 反馈cqi信息及信道质量估计的方法、用户终端及基站 |
EP2529489B1 (en) | 2010-01-27 | 2018-10-17 | Telefonaktiebolaget LM Ericsson (publ) | Closed loop precoding weight estimation |
KR101634931B1 (ko) * | 2010-03-15 | 2016-06-30 | 삼성전자주식회사 | 다중 안테나 시스템에서 가상 안테나 매핑을 위한 장치 및 방법 |
CN102244567A (zh) * | 2010-05-13 | 2011-11-16 | 清华大学 | 通信控制服务器、基站、终端、联合服务系统及方法 |
KR101615236B1 (ko) * | 2010-05-18 | 2016-05-13 | 엘지전자 주식회사 | 다중 셀 협력 통신을 위한 적응적 피드백 및 적응적 전송 모드 결정 방법 및 장치 |
US8964866B2 (en) | 2010-07-02 | 2015-02-24 | Lg Electronics Inc. | Method and apparatus for transmitting signals using codebooks in a wireless communication system that supports multiple antennas |
US8938020B2 (en) | 2010-07-12 | 2015-01-20 | Lg Electronics Inc. | Method and device for transmitting/receiving a signal by using a code book in a wireless communication system |
JP5497577B2 (ja) * | 2010-08-16 | 2014-05-21 | 株式会社Nttドコモ | 通信制御方法、基地局装置及び移動局装置 |
CN102413478B (zh) * | 2010-09-21 | 2015-12-02 | 华为技术有限公司 | 数据传输方法和系统 |
US8687727B2 (en) | 2010-11-05 | 2014-04-01 | Intel Corporation | Coordinated multi-point transmission using interference feedback |
JP5703709B2 (ja) * | 2010-11-19 | 2015-04-22 | 富士通株式会社 | 無線通信システム、送信機、無線通信方法及び送信機の制御方法 |
CN102545989B (zh) * | 2010-12-17 | 2015-04-15 | 华为技术有限公司 | 用于分布式天线系统的通信方法、装置和系统 |
WO2013000140A1 (zh) * | 2011-06-30 | 2013-01-03 | 富士通株式会社 | 协作多点传输系统的下行预编码方法、数据交互方法和装置 |
KR20130089459A (ko) * | 2012-02-02 | 2013-08-12 | 삼성전자주식회사 | 무선통신 시스템에서 간섭 정렬 방법 및 장치 |
WO2013151405A1 (ko) * | 2012-04-06 | 2013-10-10 | 엘지전자 주식회사 | 무선 접속 시스템에서 협력적 프리코딩 방법 및 이를 위한 장치 |
WO2014007591A1 (ko) * | 2012-07-06 | 2014-01-09 | 엘지전자 주식회사 | 무선 통신 시스템에서 하향링크 신호를 수신 또는 전송하기 위한 방법 및 이를 위한 장치 |
JP2014027608A (ja) * | 2012-07-30 | 2014-02-06 | Ntt Docomo Inc | 基地局装置、ユーザ端末、通信システム及び通信制御方法 |
KR20140046518A (ko) * | 2012-10-04 | 2014-04-21 | 삼성전자주식회사 | 통신 시스템에서 스케줄 관리 방법 및 장치 |
KR102197677B1 (ko) * | 2013-01-04 | 2020-12-31 | 한국전자통신연구원 | 다중 안테나를 이용한 신호 전송 방법 |
KR102235686B1 (ko) | 2013-12-30 | 2021-04-06 | 한국전자통신연구원 | Mimo 기반 신호 간섭 제거 방법 |
US10263730B2 (en) | 2014-10-29 | 2019-04-16 | Nec Corporation | Communication system and method, base station, and user terminal |
US20160269087A1 (en) * | 2015-03-12 | 2016-09-15 | Qualcomm Incorporated | Signaling for millimeter wave interference and scheduling |
CN108282197B (zh) * | 2017-01-05 | 2021-08-27 | 华为技术有限公司 | 指示及确定预编码向量的方法和接收及发射端设备 |
CN108282196B (zh) * | 2017-01-05 | 2020-11-03 | 华为技术有限公司 | 指示、确定预编码矩阵的方法以及接收、发射端设备 |
CN111435848B (zh) * | 2019-01-11 | 2022-05-31 | 华为技术有限公司 | 指示和确定预编码向量的方法以及通信装置 |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002198900A (ja) * | 2000-12-27 | 2002-07-12 | Fujitsu Ltd | 下り送信電力制御方法、移動通信システム、基地局、移動局、交換局側装置 |
TWI240581B (en) * | 2002-09-27 | 2005-09-21 | Interdigital Tech Corp | Mobile communications system and method for providing mobile unit handover in wireless communication systems that employ beamforming antennas |
SE0303602D0 (sv) | 2003-12-30 | 2003-12-30 | Ericsson Telefon Ab L M | Method and arrangement in self-organizing cooperative network |
KR100651447B1 (ko) * | 2004-04-14 | 2006-11-29 | 삼성전자주식회사 | 복수의 안테나들을 사용하는 셀룰러 이동통신 시스템에서의 안테나 재 선택 시스템 및 방법 |
US7428268B2 (en) | 2004-12-07 | 2008-09-23 | Adaptix, Inc. | Cooperative MIMO in multicell wireless networks |
US8488459B2 (en) * | 2005-03-04 | 2013-07-16 | Qualcomm Incorporated | Power control and quality of service (QoS) implementation in a communication system |
KR100659539B1 (ko) * | 2005-03-09 | 2006-12-20 | 삼성전자주식회사 | 폐루프 방식의 다중 송수신 안테나 시스템에서 송수신 장치및 방법 |
KR20060119144A (ko) | 2005-05-18 | 2006-11-24 | 재단법인서울대학교산학협력재단 | 다중 사용자 다중 송수신 안테나 통신장치 및 그 방법 |
KR20060130806A (ko) * | 2005-06-08 | 2006-12-20 | 삼성전자주식회사 | 코드북 기반 폐루프 방식의 다중 송수신 안테나 시스템에서송수신 장치 및 방법 |
US8229008B2 (en) * | 2005-07-26 | 2012-07-24 | Nvidia Corporation | Interference mitigation for orthogonal frequency division multiplexing communication |
KR100779172B1 (ko) * | 2005-08-19 | 2007-11-26 | 한국전자통신연구원 | Ofdm 시스템/ofdm 기반 셀룰러 시스템에서의 가상다중 안테나 방법 |
KR100734890B1 (ko) * | 2005-10-10 | 2007-07-03 | 삼성전자주식회사 | 스마트 안테나 시스템에서 단말의 수신성능을 향상시키기위한 장치 및 방법 |
US20070165738A1 (en) | 2005-10-27 | 2007-07-19 | Barriac Gwendolyn D | Method and apparatus for pre-coding for a mimo system |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US7917176B2 (en) * | 2006-02-14 | 2011-03-29 | Nec Laboratories America, Inc. | Structured codebook and successive beamforming for multiple-antenna systems |
KR100996023B1 (ko) * | 2005-10-31 | 2010-11-22 | 삼성전자주식회사 | 다중 안테나 통신 시스템에서 데이터 송수신 장치 및 방법 |
KR100896442B1 (ko) | 2005-12-23 | 2009-05-14 | 삼성전자주식회사 | 광대역 무선 통신시스템에서 인접 셀의 간섭을 제거하기위한 장치 및 방법 |
KR100867315B1 (ko) | 2006-02-03 | 2008-11-06 | 삼성전자주식회사 | 코드북 기반의 빔포밍 시스템에서 빔포밍 벡터 결정 장치및 방법 |
US7526036B2 (en) | 2006-04-20 | 2009-04-28 | Mitsubishi Electric Research Laboratories, Inc. | System and method for transmitting signals in cooperative base station multi-user mimo networks |
US8700042B2 (en) * | 2006-04-21 | 2014-04-15 | Alcatel Lucent | Method to control the effects of out-of-cell interference in a wireless cellular system using backhaul transmission of decoded data and formats |
KR20070119178A (ko) | 2006-06-14 | 2007-12-20 | 삼성전자주식회사 | 다중 사용자 mimo에서 피드백 제어 방법 및 시스템 |
US7702029B2 (en) * | 2006-10-02 | 2010-04-20 | Freescale Semiconductor, Inc. | MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding |
US7859990B2 (en) * | 2007-01-23 | 2010-12-28 | Beceem Communications Inc. | Methods and systems for performing channels estimation in a wireless communication system |
US8027301B2 (en) * | 2007-01-24 | 2011-09-27 | The Board Of Trustees Of The Leland Stanford Junior University | Cooperative OFDMA and distributed MIMO relaying over dense wireless networks |
US8085653B2 (en) * | 2007-09-08 | 2011-12-27 | Intel Corporation | Beamforming with nulling techniques for wireless communications networks |
KR101387532B1 (ko) * | 2007-12-26 | 2014-04-21 | 엘지전자 주식회사 | 협력적 mimo 수행을 위한 피드백 정보 전송방법 |
US20100284359A1 (en) * | 2007-12-28 | 2010-11-11 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting/receiving downlink data in wireless communication network |
FR2942097A1 (fr) * | 2009-02-06 | 2010-08-13 | Thomson Licensing | Procede d'emission dans un reseau sans fil et procede de reception correspondant |
US20110170427A1 (en) * | 2010-01-11 | 2011-07-14 | Nokia Corporation | Best Companion PMI-Based Beamforming |
-
2007
- 2007-12-31 KR KR1020070141799A patent/KR100995045B1/ko not_active IP Right Cessation
-
2008
- 2008-12-30 WO PCT/KR2008/007795 patent/WO2009084903A2/en active Application Filing
- 2008-12-30 JP JP2010541388A patent/JP5129346B2/ja not_active Expired - Fee Related
- 2008-12-30 CN CN2008801236175A patent/CN101911522B/zh not_active Expired - Fee Related
- 2008-12-30 EP EP08866038.6A patent/EP2227866A4/en not_active Withdrawn
- 2008-12-30 US US12/811,175 patent/US8755451B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101911522A (zh) | 2010-12-08 |
KR100995045B1 (ko) | 2010-11-19 |
CN101911522B (zh) | 2013-04-24 |
KR20090073758A (ko) | 2009-07-03 |
WO2009084903A3 (en) | 2009-10-29 |
EP2227866A4 (en) | 2014-03-12 |
US8755451B2 (en) | 2014-06-17 |
EP2227866A2 (en) | 2010-09-15 |
WO2009084903A2 (en) | 2009-07-09 |
US20100309998A1 (en) | 2010-12-09 |
JP2011509040A (ja) | 2011-03-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5129346B2 (ja) | コラボラティブ多入力多出力通信システムにおけるプリコーディングされた信号を送信する方法 | |
KR101241910B1 (ko) | 다중 셀 환경에서 사운딩 채널을 이용한 협력적 mimo 기법 | |
KR101507088B1 (ko) | 다중 입출력 무선통신 시스템에서 상향링크 빔 성형 및 공간분할 다중 접속 장치 및 방법 | |
JP5876303B2 (ja) | 信号伝送モード選択方法 | |
US9654272B2 (en) | Method for multi-input multi-output communication in large-scale antenna system | |
US9325390B2 (en) | Wireless communications system and precoding method | |
JP4945333B2 (ja) | 無線システム、基地局装置および端末装置 | |
WO2010032385A1 (ja) | 無線通信装置、無線通信システム及び無線通信方法 | |
JP5809130B2 (ja) | Mimoネットワークにおいて通信するための方法 | |
KR20100053417A (ko) | 다중입력다중출력 시스템에서 신호 전송 방법 및 신호 수신 방법 | |
JP2010526465A (ja) | 複数ユーザのmimoシステムにおいて情報をプリコーディングする方法 | |
KR20150134520A (ko) | Mumimo 간섭 채널 네트워크 환경에서의 간섭정렬 송수신 신호처리 장치 및 방법 | |
KR20090077185A (ko) | 협력적 다중 입출력 통신 시스템에서 코드북 기반의빔포밍을 수행하는 방법 | |
JP6344489B2 (ja) | データ通信方法及びmimo基地局 | |
KR101422026B1 (ko) | 다중 입출력 시스템에서, 신호를 송수신하는 방법 | |
KR20130007420A (ko) | 적응적 송신 편파 제어를 이용한 무선 통신 방법 및 장치 | |
KR102105338B1 (ko) | 다중 안테나 시스템의 송수신 장치 및 방법 | |
RU2574854C2 (ru) | Способ работы вторичной станции |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120703 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120910 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20121002 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20121101 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151109 Year of fee payment: 3 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |