JP6129374B2 - 複数アンテナをサポートする無線通信システムにおいてチャネル状態情報参照信号の設定情報を提供する方法及び装置 - Google Patents
複数アンテナをサポートする無線通信システムにおいてチャネル状態情報参照信号の設定情報を提供する方法及び装置 Download PDFInfo
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Description
CSI−RS設定2:隣接セルのCSI−RS設定(B個のアンテナ用CSI−RS)
CSI−RS設定3:仮想単一セルのCSI−RS設定(A+B個のアンテナ用CSI−RS)
Claims (16)
- 複数アンテナ送信をサポートする基地局がチャネル状態情報(CSI)フィードバックを端末から受信する方法であって、
前記基地局が無線リソース制御(RRC)信号通知を介して、前記端末によって使用される、1又は複数のチャネル状態情報参照信号(CSI−RS)設定と1又は複数の無効リソース要素(RE)設定とを設定するステップと、
前記基地局が前記端末へ、前記1又は複数のCSI−RS設定に基づいて、CSI−RSを送信するステップと、
前記基地局が前記端末から、前記CSI−RSと前記1又は複数の無効RE設定とに基づいて測定される前記CSIフィードバックを受信するステップと、を有し、
前記1又は複数のCSI−RS設定は、前記CSIフィードバックのチャネル品質測定のために使用され、
前記1又は複数の無効RE設定は、前記CSIフィードバックの干渉測定のために使用され、
前記基地局がRRC信号通知を介して、前記CSI−RSと前記1又は複数の無効RE設定によって示される無効REとがマップされる少なくとも一つのダウンリンクサブフレームに関連する、所定の周期と所定のオフセットとを示す少なくとも一つのサブフレーム設定を設定し、
前記少なくとも一つのサブフレーム設定は、前記CSI−RSと前記無効REとに対して別々に設定される、方法。 - 前記1又は複数のCSI−RS設定は、前記CSI−RSがマップされるREの位置を示す、請求項1に記載の方法。
- 前記1又は複数の無効RE設定は、隣接する基地局のCSI−RSが送信されるREの位置を示す、請求項2に記載の方法。
- 前記CSI−RSは、1、2、4又は8個のアンテナポートに対して送信される、請求項1に記載の方法。
- 端末が複数アンテナ送信をサポートする基地局へ、チャネル状態情報(CSI)フィードバックを送信する方法であって、
前記端末が、無線リソース制御(RRC)信号通知を介して前記基地局によって設定される、1又は複数のチャネル状態情報参照信号(CSI−RS)設定と1又は複数の無効リソース要素(RE)設定とを受信するステップと、
前記端末が前記基地局から、前記1又は複数のCSI−RS設定に基づいて、CSI−RSを受信するステップと、
前記端末が前記基地局へ、前記CSI−RSと前記1又は複数の無効RE設定とを用いて測定した前記CSIフィードバックを送信するステップと、を有し、
前記1又は複数のCSI−RS設定は、前記CSIフィードバックのチャネル品質測定のために使用され、
前記1又は複数の無効RE設定は、前記CSIフィードバックの干渉測定のために使用され、
前記端末が前記基地局からRRC信号通知を介して、前記CSI−RSと前記1又は複数の無効RE設定によって示される無効REとがマップされる少なくとも一つのダウンリンクサブフレームに関連する、所定の周期と所定のオフセットとを示す少なくとも一つのサブフレーム設定を受信し、
前記少なくとも一つのサブフレーム設定は、前記CSI−RSと前記無効REとに対して別々に設定される、方法。 - 前記1又は複数のCSI−RS設定は、前記CSI−RSがマップされるREの位置を示す、請求項5に記載の方法。
- 前記1又は複数の無効RE設定は、隣接する基地局のCSI−RSが送信されるREの位置を示す、請求項6に記載の方法。
- 前記CSI−RSは、前記基地局から1、2、4又は8個のアンテナポートに対して送信される、請求項5に記載の方法。
- 複数アンテナ送信をサポートする無線通信システムにおける基地局であって、
端末からアップリンク信号を受信するよう設定される受信器と、
前記端末にダウンリンク信号を送信するよう設定される送信器と、
前記受信器及び前記送信器を制御するプロセッサと、を備え、
前記プロセッサは、
無線リソース制御(RRC)信号通知を介して、前記端末によって使用される、1又は複数のチャネル状態情報参照信号(CSI−RS)設定と1又は複数の無効リソース要素(RE)設定とを設定し、
前記送信器が前記端末へ、前記1又は複数のCSI−RS設定に基づいて、CSI−RSを送信し、
前記受信器が前記端末から、前記CSI−RSと前記1又は複数の無効RE設定とに基づいて測定されるチャネル状態情報(CSI)フィードバックを受信するように構成され、
前記1又は複数のCSI−RS設定は、前記CSIフィードバックのチャネル品質測定のために使用され、
前記1又は複数の無効RE設定は、前記CSIフィードバックの干渉測定のために使用され、
前記プロセッサは、RRC信号通知を介して、前記CSI−RSと前記1又は複数の無効RE設定によって示される無効REとがマップされる少なくとも一つのダウンリンクサブフレームに関連する、所定の周期と所定のオフセットとを示す少なくとも一つのサブフレーム設定を設定し、
前記少なくとも一つのサブフレーム設定は、前記CSI−RSと前記無効REとに対して別々に設定される、基地局。 - 前記1又は複数のCSI−RS設定は、前記CSI−RSがマップされるREの位置を示す、請求項9に記載の基地局。
- 前記1又は複数の無効RE設定は、隣接する基地局のCSI−RSが送信されるREの位置を示す、請求項10に記載の基地局。
- 前記CSI−RSは、1、2、4又は8個のアンテナポートに対して送信される、請求項9に記載の基地局。
- 複数アンテナ送信をサポートする無線通信システムにおける端末であって、
基地局からダウンリンク信号を受信するよう設定される受信器と、
前記基地局にアップリンク信号を送信するよう設定される送信器と、
前記受信器及び前記送信器を制御するプロセッサと、を備え、
前記プロセッサは、
前記受信器が、無線リソース制御(RRC)信号通知を介して前記基地局によって設定される、1又は複数のチャネル状態情報参照信号(CSI−RS)設定と1又は複数の無効リソース要素(RE)設定とを受信し、
前記受信器が前記基地局から、前記1又は複数のCSI−RS設定に基づいて、CSI−RSを受信し、
前記送信器が前記基地局へ、前記CSI−RSと前記1又は複数の無効RE設定とを用いて測定したCSIフィードバックを送信するように構成され、
前記1又は複数のCSI−RS設定は、前記CSIフィードバックのチャネル品質測定のために使用され、
前記1又は複数の無効RE設定は、前記CSIフィードバックの干渉測定のために使用され、
前記プロセッサは、前記受信器が前記基地局からRRC信号通知を介して、前記CSI−RSと前記1又は複数の無効RE設定によって示される無効REとがマップされる少なくとも一つのダウンリンクサブフレームに関連する、所定の周期と所定のオフセットとを示す少なくとも一つのサブフレーム設定を受信するよう設定され、
前記少なくとも一つのサブフレーム設定は、前記CSI−RSと前記無効REとに対して別々に設定される、端末。 - 前記1又は複数のCSI−RS設定は、前記CSI−RSがマップされるREの位置を示す、請求項13に記載の端末。
- 前記1又は複数の無効RE設定は、隣接する基地局のCSI−RSが送信されるREの位置を示す、請求項14に記載の端末。
- 前記CSI−RSは、前記基地局から1、2、4又は8個のアンテナポートに対して送信される、請求項13に記載の端末。
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