JP2009505573A - マルチアンテナ無線通信システムのダウンリンクのマルチユーザ送信スケジューリング - Google Patents
マルチアンテナ無線通信システムのダウンリンクのマルチユーザ送信スケジューリング Download PDFInfo
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- JP2009505573A JP2009505573A JP2008526978A JP2008526978A JP2009505573A JP 2009505573 A JP2009505573 A JP 2009505573A JP 2008526978 A JP2008526978 A JP 2008526978A JP 2008526978 A JP2008526978 A JP 2008526978A JP 2009505573 A JP2009505573 A JP 2009505573A
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- 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
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- 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
- H04B7/0647—Variable feedback rate
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- 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
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- 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
Abstract
Description
αk(n)=hk(n−1)w(n−1)+ηk(n)
によって示されてもよく、ただし、ηk(n)は、量子化されたフィードバックによって生じた誤りを示し、それは、ゼロ平均複素ガウス分布
Claims (10)
- 無線通信システム内の基地局に関連する複数のアンテナから複数の移動局ユーザのうちの少なくとも1つの移動局ユーザへのダウンリンクを介した無線周波数送信を制御する方法であって、
前記少なくとも1つの移動局ユーザからの前記チャネルの状態を示すフィードバック情報に基づいて、前記少なくとも1つの移動局ユーザに対応するチャネルを追跡するステップと、
前記少なくとも1つの移動局ユーザについて、前記複数の移動局ユーザの前記追跡されたチャネルに基づいて指向性送信をスケジューリングするステップとを含む方法。 - 前記移動局ユーザへの指向性送信をスケジューリングするステップが、
前記スケジューリングされた移動局ユーザの前記追跡されたチャネルに基づいて前記指向性送信についての複数の表示を生成するステップと、
前記スケジューリングされた移動局ユーザに前記無線周波数送信を送信するために前記基地局に関連する前記複数のアンテナを使用するステップをさらに含む、請求項1に記載の方法。 - 前記追跡されたチャネルに関連する前記フィードバック情報のサンプルの使用可能性に基づいて、前記スケジューリングされた移動局ユーザの前記チャネルの推定の表示を使用するステップをさらに含む請求項2に記載の方法。
- 前記複数の移動局ユーザの各移動局に、対応するユーザの前記チャネルのチャネル利得を推定させるステップをさらに含む請求項3に記載の方法。
- 前記基地局で、前記複数の移動局ユーザの前記各移動局からの前記チャネル利得を、量子化されたフィードバックとしてのフィードバック・シグナリングで受信するステップと、
前記複数の移動局ユーザの前記各移動局のフィードバック・データレートを制御するステップと、
フィードバック情報の目標レベルに基づいて前記フィードバック・データレートを、所望のフィードバック・レート制御を提供するレートに減少させるステップとをさらに含む請求項4に記載の方法。 - 前記複数の移動局ユーザの各移動局のチャネル状態を監視するステップと、
前記監視されたチャネル条件について前記スケジューリングされた移動局ユーザの前記移動局で所望の性能を得るために、前記移動局からの比較的低いレートのフィードバックを使用するステップとをさらに含む請求項1に記載の方法。 - 前記複数の移動局ユーザの前記少なくとも1つの移動局ユーザに対応するチャネルを追跡するステップが、
カルマン・フィルタリングを使用して前記複数の移動局ユーザの各移動局に対応する前記チャネルを適応時に追跡するステップをさらに含む、請求項2に記載の方法。 - 前記複数の移動局ユーザの前記少なくとも1つの移動局ユーザに対応するチャネルを追跡するステップが、
カルマン・フィルタリングを使用して前記複数の移動局ユーザの各移動局に対応する前記チャネルをリアルタイムに追跡するステップをさらに含む、請求項2に記載の方法。 - 前記少なくとも1つの移動局ユーザについて指向性送信をスケジューリングするステップが、
前記複数の移動局ユーザについて前記指向性送信を時間、周波数および空間次元のうちの少なくとも1つでスケジューリングために、前記基地局で前記複数のアンテナのスケジューリング・アルゴリズムを使用するステップをさらに含む、請求項2に記載の方法。 - 前記少なくとも1つの移動局ユーザについて指向性送信をスケジューリングするステップが、
前記基地局で複数のユーザ・チャネルの各チャネルのチャネル複素利得の前記フィードバックを取得するためにフィードバック・シグナリングを割り当てるステップと、
前記基地局がビームフォーミング重み系列を取得することを可能にするステップと、
前記基地局に、前記ダウンリンクのスループットの最大化のため、比較的ゆっくり変化する通信環境内で所望のチャネル推定を取得させるステップとをさらに含む、請求項2に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US11/204,775 US7907911B2 (en) | 2005-08-16 | 2005-08-16 | Scheduling multi-user transmission in the downlink of a multi-antenna wireless communication system |
US11/204,775 | 2005-08-16 | ||
PCT/US2006/030543 WO2007021607A1 (en) | 2005-08-16 | 2006-08-04 | Scheduling multi-user transmission in the downlink of a multi-antenna wireless communication system |
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JP2009505573A true JP2009505573A (ja) | 2009-02-05 |
JP5314424B2 JP5314424B2 (ja) | 2013-10-16 |
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US (1) | US7907911B2 (ja) |
EP (1) | EP1915827B1 (ja) |
JP (1) | JP5314424B2 (ja) |
KR (1) | KR101268728B1 (ja) |
CN (1) | CN101395821B (ja) |
WO (1) | WO2007021607A1 (ja) |
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2006
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JP2010537598A (ja) * | 2007-08-29 | 2010-12-02 | アルカテル−ルーセント | マルチユーザプリコーディング及びスケジューリングの方法並びにそれを実施するための基地局 |
JP2011035828A (ja) * | 2009-08-05 | 2011-02-17 | Sharp Corp | 基地局装置、端末装置および無線通信システム |
JP2015511456A (ja) * | 2012-02-09 | 2015-04-16 | アルカテル−ルーセント | 様々なネットワーク・オペレータのユーザ端末に対して無線リソースをスケジューリングするための方法およびそのための基地局 |
WO2014112342A1 (ja) * | 2013-01-15 | 2014-07-24 | 独立行政法人情報通信研究機構 | 無線装置 |
JP2014138225A (ja) * | 2013-01-15 | 2014-07-28 | National Institute Of Information & Communication Technology | 無線装置 |
GB2526022A (en) * | 2013-01-15 | 2015-11-11 | Nat Inst Inf & Comm Tech | Radio apparatus |
US9900785B2 (en) | 2013-01-15 | 2018-02-20 | National Institute Of Information And Communications Technology | Wireless device |
GB2526022B (en) * | 2013-01-15 | 2020-09-23 | Nat Inst Inf & Comm Tech | Wireless Device |
Also Published As
Publication number | Publication date |
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EP1915827A1 (en) | 2008-04-30 |
KR20080033189A (ko) | 2008-04-16 |
US20070042717A1 (en) | 2007-02-22 |
US7907911B2 (en) | 2011-03-15 |
WO2007021607A1 (en) | 2007-02-22 |
KR101268728B1 (ko) | 2013-05-28 |
CN101395821B (zh) | 2014-09-24 |
JP5314424B2 (ja) | 2013-10-16 |
CN101395821A (zh) | 2009-03-25 |
EP1915827B1 (en) | 2012-06-13 |
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