JP5705843B2 - 協調ビーム成形のためのアンテナ設定 - Google Patents
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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
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- 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
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- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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Description
(a)第1及び第2プライマリ局から少なくとも1つの第1セカンダリ局への協調ビーム成形送信を提供するステップを有し、ステップ(a)は、
(a1)第1セカンダリ局が、第1及び第2プライマリ局のうちの少なくとも1つに少なくとも1つのチャネル行列を通知すること、並びに、
(a2)第1及び第2プライマリ局が、第1アンテナアレイ及び第2アンテナアレイの両方にわたってプリコーディング行列を適用することを含み、プリコーディング行列は第1セルのための第1ベクトル及び第2セルのための第2ベクトルを有し、プリコーディング行列は少なくとも1つのチャネル行列に基づく。
・異なるデータが異なるセルから送信されることができ、それはいくつかのセル中に同じデータの複数のコピーを提供する必要性を回避する。
・いかなる位相オフセットも示すことを要せずに既存のコードブックが用いられることができる。
・スケジューリング決定(例えば送信レート及び電力割り当て)が、異なるセルにわたって少なくとも部分的に独立していることができる。それが、この第2の実施の形態が図2に示されるネットワークにより適合していることができる理由である。
Claims (13)
- ネットワークにおいて通信するための方法であって、前記ネットワークは、複数のセカンダリ局と通信するために、第1セル専用の第1アンテナアレイを持つ第1プライマリ局及び第2セル専用の第2アンテナアレイを持つ第2プライマリ局をそれぞれが含む第1セル及び第2セルを少なくとも有し、当該方法は、
(a)前記第1及び第2プライマリ局から少なくとも1つの第1セカンダリ局への協調ビーム成形送信を提供するステップ、
を有し、ステップ(a)は、
(a1)前記第1セカンダリ局が、前記第1及び第2プライマリ局の少なくとも1つに少なくとも1つのチャネル行列を通知するステップ、
(a2)前記第1及び第2プライマリ局が、前記第1アンテナアレイ及び前記第2アンテナアレイの両方にわたって同じプリコーディング・ベクトルを適用するステップ、
を含み、前記プリコーディング・ベクトルは、前記第1セルのための第1ベクトル及び前記第2セルのための第2ベクトルを有し、前記プリコーディング・ベクトルは、前記少なくとも1つのチャネル行列に基づく、方法。 - 前記第1ベクトル及び前記第2ベクトルは、前記第1セル専用の第1コードブック及び前記第2セル専用の第2コードブックからそれぞれ選択される、請求項1に記載の方法。
- ステップ(a1)が、第1ベクトルと第2ベクトルとの間の位相関係を通知することを含む、請求項1又は請求項2に記載の方法。
- プリコードされたリファレンス・シンボルによってセカンダリ局に位相基準が通知される、請求項1から請求項3のいずれか一項に記載の方法。
- 前記第1セカンダリ局が、前記第1セル及び前記第2セルから、又は前記第1セル若しくは前記第2セルからの各々の空間ストリームのために、チャネル品質情報を通知する、請求項1から請求項4のいずれか一項に記載の方法。
- 前記チャネル品質情報が、少なくとも1つの別の好ましいプリコーディング・ベクトルをさらに有し、前記第1プライマリ局及び前記第2プライマリ局又は前記第1プライマリ局若しくは前記第2プライマリ局が、前記好ましいプリコーディング・ベクトル又は干渉測定に応じた別のベクトルを選択する、請求項5に記載の方法。
- 前記チャネル品質情報がチャネル状態を表す、請求項6に記載の方法。
- 前記チャネル品質情報が好ましい送信ランクを含む、請求項5から請求項7のいずれか一項に記載の方法。
- 前記少なくとも1つのチャネル行列が、
前記セカンダリ局によってコードブックから選択される好ましいプリコーディング・ベクトル、
前記第1及び第2プライマリ局のうちの1つとセカンダリ局との間の送信チャネルの量子化された表現、
のうちの1つを含む、請求項1から請求項8のいずれか一項に記載の方法。 - 前記好ましいプリコーディング・ベクトルが、
最高の受信データ速度を与えるプリコーディング・ベクトル、及び
最高の受信SNRを与えるプリコーディング・ベクトル、
のうちの1つを示すように選択される、請求項9に記載の方法。 - ネットワークの第1セル専用の第1アンテナアレイを持つ第1プライマリ局であって、前記ネットワークはさらに、第2セル専用の第2アンテナアレイを持つ第2プライマリ局を含む第2セルを少なくとも有し、当該第1プライマリ局は、複数のセカンダリ局と通信するための手段を有し、前記第1プライマリ局はさらに、前記第1及び第2プライマリ局から少なくとも1つの第1セカンダリ局への協調ビーム成形送信を提供するために前記第2プライマリ局と協力するための手段、少なくとも1つのチャネル行列の通知を前記第1セカンダリ局から受信するための受信手段、及び、前記第1アンテナアレイにわたってプリコーディング・ベクトルを適用するための制御手段を有し、前記プリコーディング・ベクトルは、前記第1セルのための第1ベクトル及び前記第2セルのための第2ベクトルを有し、前記第2プライマリ局の前記第2アンテナアレイにも適用され、前記プリコーディング・ベクトルは、前記少なくとも1つのチャネル行列に基づく、第1プライマリ局。
- ネットワークにおいて通信するための手段を有するセカンダリ局であって、前記ネットワークは、前記セカンダリ局と通信するために、第1セル専用の第1アンテナアレイを持つ請求項11に記載の第1プライマリ局及び第2セル専用の第2アンテナアレイを持つ請求項11に記載の第2プライマリ局をそれぞれ含む第1セル及び第2セルを少なくとも有し、前記セカンダリ局は、前記第1及び第2プライマリ局から少なくとも1つの第1セカンダリ局への協調ビーム成形送信を受信し、前記第1及び第2プライマリ局のうちの少なくとも1つに少なくとも1つのチャネル行列を通知するための手段を有し、前記チャネル行列は、前記第1セル専用のコードブック及び/又は前記第2セル専用のコードブックに基づく、セカンダリ局。
- 第1セル専用の請求項11に記載の第1プライマリ局、及び、第2セル専用の請求項11に記載の第2プライマリ局を少なくとも有するネットワークであって、前記第1プライマリ局及び第2プライマリ局は、請求項12に記載のセカンダリ局に向けられる協調ビーム成形送信を提供するために協力するための手段を有する、ネットワーク。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09163525.0 | 2009-06-23 | ||
EP09163525 | 2009-06-23 | ||
PCT/IB2010/052633 WO2010150129A2 (en) | 2009-06-23 | 2010-06-14 | Antenna configuration for co-operative beamforming |
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JP2012531780A JP2012531780A (ja) | 2012-12-10 |
JP2012531780A5 JP2012531780A5 (ja) | 2014-10-02 |
JP5705843B2 true JP5705843B2 (ja) | 2015-04-22 |
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JP2012516894A Active JP5705843B2 (ja) | 2009-06-23 | 2010-06-14 | 協調ビーム成形のためのアンテナ設定 |
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US (4) | US9065512B2 (ja) |
EP (1) | EP2446549B1 (ja) |
JP (1) | JP5705843B2 (ja) |
KR (2) | KR20120112357A (ja) |
CN (1) | CN102656817B (ja) |
AU (1) | AU2010264227B2 (ja) |
BR (1) | BRPI1010138B1 (ja) |
CA (1) | CA2766310C (ja) |
ES (1) | ES2905113T3 (ja) |
RU (1) | RU2549196C2 (ja) |
TW (1) | TWI526090B (ja) |
WO (1) | WO2010150129A2 (ja) |
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AU2010264227B2 (en) | 2009-06-23 | 2015-11-12 | Koninklijke Philips Electronics N.V. | Antenna configuration for co-operative beamforming |
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US8774146B2 (en) * | 2011-12-19 | 2014-07-08 | Alcatel Lucent | Large-scale antenna method and apparatus of wireless communication with suppression of intercell interference |
US9236916B2 (en) | 2012-03-15 | 2016-01-12 | Telefonaktiebolaget Lm Ericsson | Node and method for generating beamformed for downlink communications |
EP2826162B1 (en) * | 2012-03-15 | 2017-03-01 | Telefonaktiebolaget LM Ericsson (publ) | Node and method for generating beamformed signals for downlink communication |
EP3306826B1 (en) | 2012-10-03 | 2019-06-05 | Sckipio Technologies S.i Ltd | Hybrid precoder |
US9503171B2 (en) | 2013-01-04 | 2016-11-22 | Electronics And Telecommunications Research Institute | Method for transmitting signal using multiple antennas |
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US11190242B2 (en) | 2021-11-30 |
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CA2766310A1 (en) | 2010-12-29 |
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