JP6735318B2 - 多次元アンテナ構成を使用する無線通信 - Google Patents
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
-
- 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
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
- H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
-
- 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
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- 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
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radio Transmission System (AREA)
Description
Claims (18)
- 無線送信/受信ユニット(WTRU)からのフィードバックを有効にする方法であって、
前記WTRUがフィードバックを報告するための構成を受信するステップと、
フィードバックを報告するための前記構成が、第1のチャネル状態情報(CSI)基準信号(CSI−RS)よりも少ないアンテナポートと関連付けられた第2のCSI−RSを有さない前記第1のCSI−RSを示すとき、前記第1のCSI−RSを使用して、プリコーディングマトリックスインデックス(PMI)、チャネル品質インジケータ(CQI)、およびランクインジケータ(RI)を含むCSIフィードバックを基地局に報告するステップと、
フィードバックを報告するための前記構成が、前記第1のCSI−RS、および前記第1のCSI−RSよりも少ないアンテナポートと関連付けられた前記第2のCSI−RSを示すとき、前記第2のCSI−RSを使用して、前記PMI、前記CQI、および前記RIを含む前記CSIフィードバックを前記基地局に報告するステップと
を備えたことを特徴とする方法。 - フィードバックを報告するための前記構成が、前記第1のCSI−RSおよび前記第2のCSI−RSを示すとき、前記第1のCSI−RSを使用してプリコーディングマトリックスを報告するステップをさらに備えたことを特徴とする請求項1に記載の方法。
- 前記第1のCSI−RSは、セル固有構成を有する完全なCSI−RSであり、および前記第2のCSI−RSは、WTRU固有構成を有する部分的なCSI−RSであることを特徴とする請求項1に記載の方法。
- フィードバックを報告するための前記構成が、前記第1のCSI−RS、および前記第1のCSI−RSよりも少ないアンテナポートと関連付けられた前記第2のCSI−RSを示すとき、複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記PMIを決定するステップをさらに備えたことを特徴とする請求項1に記載の方法。
- 前記複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記CSIフィードバックは、前記複数のコンポーネントコードブックに応じて計算された複合コードブックによって示されることを特徴とする請求項4に記載の方法。
- 前記PMIに基づいて、複合プリコーディングマトリックスを生成するステップと、
前記複合プリコーディングマトリックスに基づいて、前記CQIを決定するステップと、
前記複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記PMI、および前記CQIを前記基地局に報告するステップと
をさらに備えたことを特徴とする請求項4に記載の方法。 - 前記CSIフィードバックは、前記複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記PMIを含み、前記PMIは、前記基地局に別々に送信されることを特徴とする請求項4に記載の方法。
- 前記第1のCSI−RSは、セル固有CSI−RS、全次元CSI−RS、前記第2のCSI−RSよりも大きいCSI−RS、または長期CSI−RSのうちの少なくとも1つを含むことを特徴とする請求項1に記載の方法。
- 前記第2のCSI−RSは、WTRU固有CSI−RS、部分的次元CSI−RS、前記第1のCSI−RSよりも小さいCSI−RS、または短期CSI−RSのうちの少なくとも1つを含むことを特徴とする請求項1に記載の方法。
- フィードバックを報告する無線送信/受信ユニット(WTRU)であって、
複数のアンテナを含む送受信機と、
前記送受信機と通信するプロセッサであって、
フィードバックを報告するための構成を受信し、
フィードバックを報告するための前記構成が、第1のチャネル状態情報(CSI)基準信号(CSI−RS)よりも少ないアンテナポートと関連付けられた第2のCSI−RSを有さない前記第1のCSI−RSを示すとき、前記第1のCSI−RSを使用して、プリコーディングマトリックスインデックス(PMI)、チャネル品質インジケータ(CQI)、およびランクインジケータ(RI)を含むCSIフィードバックを基地局に報告し、
フィードバックを報告するための前記構成が、前記第1のCSI−RS、および前記第1のCSI−RSよりも少ないアンテナポートと関連付けられた前記第2のCSI−RSを示すとき、前記第2のCSI−RSを使用して、前記PMI、前記CQI、および前記RIを含む前記CSIフィードバックを前記基地局に報告する
ように構成された前記プロセッサと
を備えたことを特徴とするWTRU。 - 前記プロセッサは、フィードバックを報告するための前記構成が、前記第1のCSI−RSおよび前記第2のCSI−RSを示すとき、前記第1のCSI−RSを使用してプリコーディングマトリックスを報告するようにさらに構成されていることを特徴とする請求項10に記載のWTRU。
- 前記第1のCSI−RSは、セル固有構成を有する完全なCSI−RSであり、および前記第2のCSI−RSは、WTRU固有構成を有する部分的なCSI−RSであることを特徴とする請求項10に記載のWTRU。
- 前記プロセッサは、フィードバックを報告するための前記構成が、前記第1のCSI−RS、および前記第1のCSI−RSよりも少ないアンテナポートと関連付けられた前記第2のCSI−RSを示すとき、複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記PMIを決定するようにさらに構成されていることを特徴とする請求項10に記載のWTRU。
- 前記複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記CSIフィードバックは、前記複数のコンポーネントコードブックに応じて計算された複合コードブックによって示されることを特徴とする請求項13に記載のWTRU。
- 前記プロセッサは、
前記PMIに基づいて、複合プリコーディングマトリックスを生成し、
前記複合プリコーディングマトリックスに基づいて、前記CQIを決定し、ならびに
前記送受信機に、前記複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記PMI、および前記CQIを前記基地局に報告させる
ようにさらに構成されていることを特徴とする請求項13に記載のWTRU。 - 前記CSIフィードバックは、前記複数のコンポーネントコードブックの各々のコンポーネントコードブックについての前記PMIを含み、前記PMIは、前記基地局に別々に送信されることを特徴とする請求項13に記載のWTRU。
- 前記第1のCSI−RSは、セル固有CSI−RS、全次元CSI−RS、前記第2のCSI−RSよりも大きいCSI−RS、または長期CSI−RSのうちの少なくとも1つを含むことを特徴とする請求項10に記載のWTRU。
- 前記第2のCSI−RSは、WTRU固有CSI−RS、部分的次元CSI−RS、前記第1のCSI−RSよりも小さいCSI−RS、または短期CSI−RSのうちの少なくとも1つを含むことを特徴とする請求項10に記載のWTRU。
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JP2018128215A Active JP6735318B2 (ja) | 2012-09-28 | 2018-07-05 | 多次元アンテナ構成を使用する無線通信 |
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JP (4) | JP6127146B2 (ja) |
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