JP5314424B2 - 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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- JP5314424B2 JP5314424B2 JP2008526978A JP2008526978A JP5314424B2 JP 5314424 B2 JP5314424 B2 JP 5314424B2 JP 2008526978 A JP2008526978 A JP 2008526978A JP 2008526978 A JP2008526978 A JP 2008526978A JP 5314424 B2 JP5314424 B2 JP 5314424B2
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- 238000004891 communication Methods 0.000 title claims description 53
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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
-
- 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
-
- 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
- H04B7/06—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
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
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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 (9)
- 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、
少なくとも1つの移動ユニットによって見られる少なくとも1つのチャネル複素利得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前記基地局で追跡するステップであって、前記基地局と前記少なくとも1つの移動ユニットとの間のユーザ・チャネルの完全な各チャネルのフィードバックではなく、前記少なくとも1つの移動局ユーザに対応するユーザチャネルのうちの少なくとも1つのユーザ・チャネルの前記少なくとも1つのチャネル複素利得を示すフィードバック情報を使用してチャネルを追跡するステップと、前記少なくとも1つの移動ユニットに対応する前記チャネルの行列表現の値のリアルタイム推定を実行するステップとを含み、前記フィードバック情報は前記基地局によって選択されるレートで提供されるステップと、
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、比例公平アルゴリズムを使って指向性ダウンリンク送信を前記基地局で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ダウンリンク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、前記指向性ダウンリンク送信についての情報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を示す情報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3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移動局からのフィードバック・レートを減少させ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ダウンリンク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ダウンリンク送信を時間、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するために、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ダウンリンク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 |
Publications (2)
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JP2009505573A JP2009505573A (ja) | 2009-02-05 |
JP5314424B2 true JP5314424B2 (ja) | 2013-10-16 |
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JP2008526978A Expired - Fee Related JP5314424B2 (ja) | 2005-08-16 | 2006-08-04 | 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 |
Country Status (6)
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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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-
2005
- 2005-08-16 US US11/204,775 patent/US7907911B2/en not_active Expired - Fee Related
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2006
- 2006-08-04 EP EP06800797A patent/EP1915827B1/en not_active Not-in-force
- 2006-08-04 JP JP2008526978A patent/JP5314424B2/ja not_active Expired - Fee Related
- 2006-08-04 CN CN200680023421.XA patent/CN101395821B/zh not_active Expired - Fee Related
- 2006-08-04 KR KR1020077030835A patent/KR101268728B1/ko not_active IP Right Cessation
- 2006-08-04 WO PCT/US2006/030543 patent/WO2007021607A1/en active Application Filing
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KR20080033189A (ko) | 2008-04-16 |
EP1915827A1 (en) | 2008-04-30 |
WO2007021607A1 (en) | 2007-02-22 |
CN101395821B (zh) | 2014-09-24 |
US7907911B2 (en) | 2011-03-15 |
CN101395821A (zh) | 2009-03-25 |
JP2009505573A (ja) | 2009-02-05 |
EP1915827B1 (en) | 2012-06-13 |
US20070042717A1 (en) | 2007-02-22 |
KR101268728B1 (ko) | 2013-05-28 |
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