TW200707948A - Transmitter and transmitting method for downward link channel - Google Patents

Transmitter and transmitting method for downward link channel

Info

Publication number
TW200707948A
TW200707948A TW095111188A TW95111188A TW200707948A TW 200707948 A TW200707948 A TW 200707948A TW 095111188 A TW095111188 A TW 095111188A TW 95111188 A TW95111188 A TW 95111188A TW 200707948 A TW200707948 A TW 200707948A
Authority
TW
Taiwan
Prior art keywords
transmitter
channel
link channel
downward link
transmitting method
Prior art date
Application number
TW095111188A
Other languages
English (en)
Other versions
TWI309517B (zh
Inventor
Mamoru Sawahashi
Kenichi Higuchi
Hiroyuki Atarashi
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 TW200707948A publication Critical patent/TW200707948A/zh
Application granted granted Critical
Publication of TWI309517B publication Critical patent/TWI309517B/zh

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
    • H04B7/06—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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • 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
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
TW095111188A 2005-04-01 2006-03-30 Transmitter and transmitting method for downward link channel TW200707948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005106911A JP2006287757A (ja) 2005-04-01 2005-04-01 下りリンクチャネル用の送信装置及び送信方法

Publications (2)

Publication Number Publication Date
TW200707948A true TW200707948A (en) 2007-02-16
TWI309517B TWI309517B (zh) 2009-05-01

Family

ID=37073240

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095111188A TW200707948A (en) 2005-04-01 2006-03-30 Transmitter and transmitting method for downward link channel

Country Status (9)

Country Link
US (1) US8009748B2 (zh)
EP (1) EP1865626A4 (zh)
JP (1) JP2006287757A (zh)
KR (1) KR20070114388A (zh)
CN (1) CN101171770B (zh)
BR (1) BRPI0608673A2 (zh)
RU (1) RU2405258C2 (zh)
TW (1) TW200707948A (zh)
WO (1) WO2006106674A1 (zh)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4776685B2 (ja) 2006-07-07 2011-09-21 三菱電機株式会社 無線通信システムおよび通信制御方法
WO2008050428A1 (fr) * 2006-10-26 2008-05-02 Fujitsu Limited Appareil de station radio fixe, procédé de transmission de pilotes et appareil terminal
US8433357B2 (en) 2007-01-04 2013-04-30 Qualcomm Incorporated Method and apparatus for utilizing other sector interference (OSI) indication
US8681749B2 (en) * 2007-01-04 2014-03-25 Qualcomm Incorporated Control resource mapping for a wireless communication system
US8457315B2 (en) 2007-01-05 2013-06-04 Qualcomm Incorporated Pilot transmission in a wireless communication system
JP5077024B2 (ja) * 2008-03-31 2012-11-21 富士通株式会社 送信方法および無線基地局
JP5007283B2 (ja) * 2008-07-28 2012-08-22 パナソニック株式会社 無線監視システム
US8155138B2 (en) * 2008-08-19 2012-04-10 Qualcomm Incorporated Training sequences for very high throughput wireless communication
US8767524B2 (en) 2008-08-19 2014-07-01 Qualcomm Incorporated Training sequences for very high throughput wireless communication
EP2200361A1 (en) 2008-10-07 2010-06-23 Nokia Siemens Networks OY Wireless cellular network using adaptive beamforming with different coverage for control and data channels
US9137077B2 (en) * 2011-11-10 2015-09-15 Xiao-an Wang Heterogeneous pilots
WO2014056197A1 (zh) * 2012-10-12 2014-04-17 华为技术有限公司 提高物理扇区用户容量的方法、装置和基站
KR102172442B1 (ko) * 2014-02-19 2020-10-30 삼성전자주식회사 우선 순위를 갖는 송신 빔 인덱스 선택 및 할당 방법 및 장치
JP6121931B2 (ja) * 2014-03-20 2017-04-26 株式会社Ｎｔｔドコモ 移動通信システム、基地局、およびユーザ装置
EP2925040A1 (en) * 2014-03-28 2015-09-30 Alcatel Lucent A method for transmission in a wireless communication system using beamforming, and a base station transceiver and a user terminal therefor
US9698884B2 (en) 2014-09-24 2017-07-04 Mediatek Inc. Control signaling in a beamforming system
US9705581B2 (en) 2014-09-24 2017-07-11 Mediatek Inc. Synchronization in a beamforming system
EP3229381B1 (en) * 2014-12-31 2019-04-24 Huawei Technologies Co. Ltd. Array antenna beam adjustment device and method
JP2019050439A (ja) * 2016-01-22 2019-03-28 シャープ株式会社 無線制御局装置および制御方法
EP3226437B1 (en) * 2016-03-31 2020-04-22 Alcatel Lucent Apparatuses, methods, and computer programs for a base station transceiver and a mobile transceiver
JP7175992B2 (ja) * 2018-03-02 2022-11-21 ソニーグループ株式会社 ビームフォーミングされた送信の調整されたビーム管理
US11677436B1 (en) * 2021-12-01 2023-06-13 Rockwell Collins, Inc. Antenna optimization for SATCOM waveforms

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI98171C (fi) 1995-05-24 1997-04-25 Nokia Telecommunications Oy Menetelmä pilottikanavien lähettämiseksi ja solukkoradiojärjestelmä
US6782277B1 (en) * 1999-09-30 2004-08-24 Qualcomm Incorporated Wireless communication system with base station beam sweeping
JP4094190B2 (ja) 1999-10-26 2008-06-04 三菱電機株式会社 送信ビーム制御装置および制御方法
WO2001054301A2 (en) 2000-01-18 2001-07-26 Nortel Networks Limited Multi-beam antenna system with reduced cross-beam interference
US7099384B1 (en) 2000-09-01 2006-08-29 Qualcomm, Inc. Method and apparatus for time-division power assignments in a wireless communication system
JP5079189B2 (ja) * 2001-04-13 2012-11-21 Ｋｄｄｉ株式会社 多ビームセルラ無線基地局、移動機及びスペクトラム拡散信号送信方法
US7266103B2 (en) 2001-10-25 2007-09-04 Qualcomm Incorporated Controlling forward link traffic channel power
JP2003244054A (ja) * 2002-02-21 2003-08-29 Ntt Docomo Inc 送信制御装置及び送信制御方法
JP3987738B2 (ja) 2002-03-05 2007-10-10 株式会社エヌ・ティ・ティ・ドコモ 移動通信システムにおけるチャネル構成方法、無線基地局、移動局及び移動通信システム
JP4038408B2 (ja) 2002-08-07 2008-01-23 株式会社エヌ・ティ・ティ・ドコモ 無線通信システム、基地局及び無線通信方法
US7263385B2 (en) * 2002-08-23 2007-08-28 Qualcomm Incorporated System and method for beamforming with data rate control feedback
JP4099118B2 (ja) 2003-08-08 2008-06-11 株式会社エヌ・ティ・ティ・ドコモ 信号伝送装置及び信号伝送方法
JP4559270B2 (ja) * 2005-03-22 2010-10-06 株式会社日立製作所 無線通信システム

Also Published As

Publication number Publication date
RU2007136936A (ru) 2009-05-10
KR20070114388A (ko) 2007-12-03
US8009748B2 (en) 2011-08-30
US20090161772A1 (en) 2009-06-25
BRPI0608673A2 (pt) 2010-01-19
CN101171770A (zh) 2008-04-30
WO2006106674A1 (ja) 2006-10-12
EP1865626A1 (en) 2007-12-12
CN101171770B (zh) 2012-07-11
JP2006287757A (ja) 2006-10-19
TWI309517B (zh) 2009-05-01
EP1865626A4 (en) 2013-01-16
RU2405258C2 (ru) 2010-11-27

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