JP5865505B2 - 協調マルチポイント(CoMP)システムにおけるダウンリンク(DL)送信のためのタイミング同期 - Google Patents
協調マルチポイント(CoMP)システムにおけるダウンリンク(DL)送信のためのタイミング同期 Download PDFInfo
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Description
Claims (19)
- 協調マルチポイント(CoMP)システム内の無線デバイスの受信機タイミングの調整方法であって、前記方法は、
無線デバイスにおいて前記CoMPシステムの協調セット内の複数の協働ノードからの複数のチャネル状態情報基準信号(CSI−RS)を受信することと、
前記複数のチャネル状態情報基準信号(CSI−RS)から生成された複数の受信基準信号(RS)タイミングから複合受信RSタイミングを推定することと、
前記複合受信RSタイミングに少なくとも一部に基づいて前記受信機タイミングを調整することと、
を備え、
前記協調セットは、少なくとも2つの協働ノードを有し、
前記複数の受信RSタイミングは、前記少なくとも2つの協働ノードからのタイミングを表す、方法。 - 前記調整される受信機タイミングは、前記無線デバイスの受信機が受信信号のための高速フーリエ変換(FFT)を処理する時間である、請求項1に記載の方法。
- 前記複合受信RSタイミングを推定することは、最も早い受信RSタイミングを前記複合受信RSタイミングに選択することをさらに有する、請求項1または2に記載の方法。
- 前記複合受信RSタイミングを推定することは、実質的に最小受信RSタイミングと最大受信RSタイミングとの間の受信機RSタイミングを選択することをさらに有する、請求項1または2に記載の方法。
- 前記複合受信RSタイミングは、前記複数の協働ノードのための基準信号受信電力(RSRP)と、前記複数の協働ノードの前記複数のチャネル状態情報基準信号(CSI−RS)から生成された前記受信RSタイミングとの組み合わせによって求められる、請求項5に記載の方法。
- 前記無線デバイスから前記協働ノードへ、前記複合受信RSタイミング、または前記協働ノードからの前記複数のチャネル状態情報基準信号(CSI−RS)から生成された協働ノード受信RSタイミング、を含むタイミングフィードバックを送信すること、
をさらに有する、請求項1から7のいずれか1項に記載の方法。 - 前記チャネル状態情報基準信号(CSI−RS)は、プライマリ同期信号(PSS)、セカンダリ同期信号(SSS)、およびセル固有基準信号(CRS)の少なくとも1つと組み合わせられる、請求項1から8のいずれか1項に記載の方法。
- コンピュータに請求項1から9のいずれか1項に記載の方法を実行させるプログラム。
- 協調マルチポイント(CoMP)システム内の無線デバイスの受信機タイミングを推定するためのタイミング推定デバイスであって、前記タイミング推定デバイスは、
無線デバイスにおいて前記CoMPシステムの協調セット内の複数の協働ノードからの複数のチャネル状態情報基準信号(CSI−RS)を受信するダウンリンク受信モジュールと、
前記複数のチャネル状態情報基準信号(CSI−RS)から生成された複数の受信基準信号(RS)タイミングから複合受信RSタイミングを推定するタイミング推定器と、
を備え、
前記協調セットは、少なくとも2つの協働ノードを有し、
前記複数の受信RSタイミングは、前記少なくとも2つの協働ノードからのタイミングを表す、タイミング推定デバイス。 - 前記複合受信RSタイミングに基づいて前記受信機タイミングを調整するタイミング調整モジュール、
をさらに備える、請求項11に記載のタイミング推定デバイス。 - 前記調整される受信機タイミングは、前記無線デバイスの受信機が受信信号のための高速フーリエ変換(FFT)を処理する時間である、請求項12に記載のタイミング推定デバイス。
- 前記タイミング推定器は、最も早い受信RSタイミングを前記複合受信RSタイミングに選択する、請求項11から13のいずれか1項に記載のタイミング推定デバイス。
- 前記タイミング推定器は、実質的に最小受信RSタイミングと最大受信RSタイミングとの間の受信機RSタイミングを選択する、請求項11から13のいずれか1項に記載のタイミング推定デバイス。
- 前記複合受信RSタイミングを含むタイミングフィードバックを協働ノードへ送信するアップリンク送信モジュール、
をさらに備える、請求項11から17のいずれか1項に記載のタイミング推定デバイス。 - 前記無線デバイスは、前記タイミング推定デバイスを含み、前記無線デバイスは、ユーザ設備(UE)および移動局(MS)からなる群から選択され、前記無線デバイスは、無線ローカルエリアネットワーク(WLAN)、無線パーソナルエリアネットワーク(WPAN)、および無線ワイドエリアネットワーク(WWAN)のうちの少なくとも1つに接続され、前記無線デバイスは、アンテナ、タッチセンシティブディスプレイ画面、スピーカ、マイクロホン、グラフィックスプロセッサ、アプリケーションプロセッサ、内部メモリ、不揮発性メモリポート、またはこれらの組み合わせを含む、請求項11から18のいずれか1項に記載のタイミング推定デバイス。
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US10560247B2 (en) | 2020-02-11 |
US20180343157A1 (en) | 2018-11-29 |
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EP2774298A1 (en) | 2014-09-10 |
CN104081696A (zh) | 2014-10-01 |
WO2013066412A1 (en) | 2013-05-10 |
KR101620248B1 (ko) | 2016-05-12 |
US9351277B2 (en) | 2016-05-24 |
KR101947246B1 (ko) | 2019-04-03 |
US11336423B2 (en) | 2022-05-17 |
RU2565245C1 (ru) | 2015-10-20 |
EP2774298B1 (en) | 2021-04-28 |
EP3046301A1 (en) | 2016-07-20 |
JP2014533036A (ja) | 2014-12-08 |
KR20140095065A (ko) | 2014-07-31 |
US20200252194A1 (en) | 2020-08-06 |
US20140086221A1 (en) | 2014-03-27 |
CN104081696B (zh) | 2017-07-18 |
EP2774298A4 (en) | 2015-08-26 |
KR20160018882A (ko) | 2016-02-17 |
US20160254938A1 (en) | 2016-09-01 |
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