JP2008236428A - 移動通信システムにおける基地局装置、ユーザ装置及び方法 - Google Patents
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- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- 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
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- 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
- H04B7/0658—Feedback reduction
- H04B7/066—Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- 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
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- 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
- H04B7/0634—Antenna weights or vector/matrix coefficients
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- 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
- H04B7/0667—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 delayed versions of same signal
- H04B7/0671—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 delayed versions of same signal using different delays between antennas
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- H—ELECTRICITY
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Abstract
【解決手段】基地局装置は、下り通信を要求する1以上のユーザに割り当てるリソースを決定するスケジューリング手段と、各ユーザ装置からのフィードバック信号に応じて、複数のアンテナに適用するPVを決定する手段と、所定数のリソースブロック(RB)毎にPVのフィードバック制御を行うか否かを、各ユーザの要求する下りデータ量に応じてユーザ毎に決定する通信方式決定手段と、スケジューリング手段で決定されたリソースで、複数のアンテナから下り信号を送信する手段とを有する。通信方式決定手段は、PVのフィードバック制御が、システム帯域中のRBに共通に行われる場合に、遅延ダイバーシチを下り通信に使用するか否かも決定する。
【選択図】図8
Description
直交周波数分割多重接続(OFDM)方式は、周波数帯域を複数の狭い周波数帯域(サブキャリア)に分割し、各周波数帯上にデータを載せて伝送を行うマルチキャリア方式であり、サブキャリアを周波数上に、一部重なりあいながらも互いに干渉することなく密に並べることで、高速伝送を実現し、周波数の利用効率を上げることができる。
3GPP TR 25.814 (V7.0.0), "Physical Layer Aspects for Evolved UTRA," June 2006 R1-070103, Downlink L1/L2 Control Signaling Channel Structure: Coding
504 下りリンクスケジューラ
506リコーディング法選択部
508 ユーザデータチャネル生成部
510 プリコーディング部
512 周波数領域位相回転部
514 下りリンク(L1/L2)制御チャネル生成部
516 送信ダイバーシチ用変調部
520 共通パラメータ設定部
522 報知チャネル生成部
524 送信ダイバーシチ用変調部
526 直交リファレンス信号生成部
530 OFDM信号生成部
602 OFDM信号復調部
603 直交リファレンス信号レプリカ生成部
604 チャネル推定部
606 1/L2制御チャネル復調及び復号部
608 報知チャネル復調及び復号部
610 乗算部
612 データチャネル復調及び復号部
614 プリコーディングベクトル候補生成部
616 CDDに基づく周波数領域位相回転量生成部
618 推定部
620 上りリンクL1/L2制御チャネル生成部
622 上りリンクデータチャネル生成部
624 SC-FDMA変調部
Claims (12)
- プリコーディング方式を使用するマルチアンテナ通信及び遅延ダイバーシチを行う通信をサポートする移動通信システムで使用される基地局装置であって、
下り通信を要求する1以上のユーザに割り当てるリソースを決定するスケジューリング手段と、
各ユーザ装置からのフィードバック信号に応じて、複数のアンテナに適用するプリコーディングベクトルを決定する手段と、
所定数のリソースブロック毎にプリコーディングベクトルのフィードバック制御を行うか否かを、各ユーザの要求する下りデータ量に応じてユーザ毎に決定する通信方式決定手段と、
スケジューリング手段で決定されたリソースで、前記複数のアンテナから下り信号を送信する手段と、
を有し、前記通信方式決定手段は、プリコーディングベクトルのフィードバック制御が、システム帯域中のリソースブロックに共通に行われる場合に、遅延ダイバーシチを下り通信に使用するか否かも決定する基地局装置。 - プリコーディングベクトルは、報知チャネルでユーザ装置に通知される請求項1記載の基地局装置。
- 報知チャネルで通知されるプリコーディングベクトルは、ユーザ装置で使用されてよいプリコーディングベクトルの複数の選択肢で表現される請求項2記載の基地局装置。
- 前記複数の選択肢の内、ユーザ装置により選択されたプリコーディングベクトルが当該基地局装置に報告される請求項3記載の基地局装置。
- 報知チャネルで通知されるプリコーディングベクトルは、ユーザ装置で使用しなければならないプリコーディングベクトルを一意に示す請求項2記載の基地局装置。
- 遅延ダイバーシチで使用される遅延量は、報知チャネルでユーザ装置に通知される請求項1記載の基地局装置。
- 報知チャネルで通知される遅延量は、ユーザ装置で使用されてよい遅延量の複数の選択肢で表現される請求項6記載の基地局装置。
- 前記複数の選択肢の内、ユーザ装置により選択された遅延量が当該基地局装置に報告される請求項7記載の基地局装置。
- 報知チャネルで通知される遅延量は、ユーザ装置で使用しなければならない遅延量を一意に示す請求項6記載の基地局装置。
- 報知チャネルで通知された少なくともプリコーディングベクトルがユーザ装置で使用された場合に予想される、該ユーザ装置における受信信号品質の推定値が当該基地局装置に報告される請求項1記載の基地局装置。
- プリコーディング方式を使用するマルチアンテナ通信及び遅延ダイバーシチを行う通信をサポートする移動通信システムで使用されるユーザ装置であって、
下り制御信号を受信し、自装置に割り当てられたリソースを特定する手段と、
特定されたリソースで下りデータ信号を受信する手段と、
下りリファレンス信号の受信品質を測定し、プリコーディング用のフィードバック信号を基地局装置に送信する手段と、
を有し、所定数のリソースブロック毎にプリコーディングベクトルのフィードバック制御を行うか否かは、各ユーザの要求する下りデータ量に応じて基地局装置でユーザ毎に決定され、
プリコーディングベクトルのフィードバック制御がシステム帯域中のリソースブロックに共通に行われる場合に、遅延ダイバーシチが下り通信に使用するか否かも基地局装置で決定されるユーザ装置。 - プリコーディング方式を使用するマルチアンテナ通信及び遅延ダイバーシチを行う通信をサポートする移動通信システムで使用される方法であって、
下り通信を要求する1以上のユーザに割り当てるリソースを基地局装置で決定するステップと、
各ユーザ装置からのフィードバック信号に応じて、基地局装置の複数のアンテナに適用するプリコーディングベクトルを決定するステップと、
スケジューリングで決定されたリソースで複数のアンテナから下り信号を送信するステップと、
を有し、所定数のリソースブロック毎にプリコーディングベクトルのフィードバック制御を行うか否かは、各ユーザの要求する下りデータ量に応じてユーザ毎に基地局装置で決定され、
プリコーディングベクトルのフィードバック制御がシステム帯域中のリソースブロックに共通に行われる場合に、遅延ダイバーシチを下り通信に使用するか否かも基地局装置で決定される方法。
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JP2007073726A JP4889532B2 (ja) | 2007-03-20 | 2007-03-20 | 移動通信システムにおける基地局装置及び方法 |
KR1020097021198A KR20090119994A (ko) | 2007-03-20 | 2008-03-14 | 이동통신 시스템에 있어서의 기지국장치, 유저장치 및 방법 |
PCT/JP2008/054785 WO2008123028A1 (ja) | 2007-03-20 | 2008-03-14 | 移動通信システムにおける基地局装置、ユーザ装置及び方法 |
CN2008800164803A CN101682383B (zh) | 2007-03-20 | 2008-03-14 | 移动通信系统中的基站装置、用户装置和方法 |
EP08722181A EP2129027A1 (en) | 2007-03-20 | 2008-03-14 | Base station device, user device, and method in mobile communication system |
US12/531,673 US20100098009A1 (en) | 2007-03-20 | 2008-03-14 | Base station apparatus, user apparatus and method in mobile communication system |
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WO2010076854A1 (ja) * | 2009-01-05 | 2010-07-08 | 富士通株式会社 | 通信装置、移動局および通信制御方法 |
WO2010103989A1 (ja) * | 2009-03-10 | 2010-09-16 | シャープ株式会社 | 無線通信システム、無線送信装置および無線送信装置の制御プログラム |
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- 2008-03-14 KR KR1020097021198A patent/KR20090119994A/ko not_active Application Discontinuation
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JP5226011B2 (ja) * | 2007-12-25 | 2013-07-03 | パナソニック株式会社 | 端末装置および復調方法 |
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CN102273283A (zh) * | 2009-01-05 | 2011-12-07 | 富士通株式会社 | 通信装置、移动台以及通信控制方法 |
EP2385733A4 (en) * | 2009-01-05 | 2014-12-31 | Fujitsu Ltd | COMMUNICATION DEVICE, MOBILE STATION, AND COMMUNICATION CONTROL METHOD |
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JP5392268B2 (ja) * | 2009-01-05 | 2014-01-22 | 富士通株式会社 | 通信装置、移動局および通信制御方法 |
JP5583115B2 (ja) * | 2009-03-10 | 2014-09-03 | シャープ株式会社 | 無線通信システム、無線送信装置および無線送信装置の制御プログラム |
WO2010103989A1 (ja) * | 2009-03-10 | 2010-09-16 | シャープ株式会社 | 無線通信システム、無線送信装置および無線送信装置の制御プログラム |
US8886138B2 (en) | 2009-03-10 | 2014-11-11 | Sharp Kabushiki Kaisha | Wireless communication system, wireless transmitter, and control program for wireless transmitter |
US9531462B2 (en) | 2009-03-10 | 2016-12-27 | Sharp Kabushiki Kaisha | Wireless communication system, wireless transmitter, and control program for wireless transmitter |
US8379772B2 (en) | 2009-09-30 | 2013-02-19 | Fujitsu Limited | Receiver, communication system, and channel estimation method |
JP2018125865A (ja) * | 2018-03-08 | 2018-08-09 | サン パテント トラスト | 送信装置および受信装置 |
WO2020262188A1 (ja) * | 2019-06-26 | 2020-12-30 | 株式会社日立国際電気 | 無線機、通信システム及び通信方法 |
JPWO2020262188A1 (ja) * | 2019-06-26 | 2020-12-30 | ||
JP7084553B2 (ja) | 2019-06-26 | 2022-06-14 | 株式会社日立国際電気 | 無線機、通信システム及び通信方法 |
US11528060B2 (en) | 2019-06-26 | 2022-12-13 | Hitachi Kokusai Electric Inc. | Wireless apparatus, communication system, and communication method |
Also Published As
Publication number | Publication date |
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US20100098009A1 (en) | 2010-04-22 |
KR20090119994A (ko) | 2009-11-23 |
WO2008123028A1 (ja) | 2008-10-16 |
JP4889532B2 (ja) | 2012-03-07 |
CN101682383A (zh) | 2010-03-24 |
CN101682383B (zh) | 2013-12-25 |
EP2129027A1 (en) | 2009-12-02 |
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