JP6072258B2 - 無線通信システムにおいてチャネル状態情報をフィードバックする方法及びそのための装置 - Google Patents
無線通信システムにおいてチャネル状態情報をフィードバックする方法及びそのための装置 Download PDFInfo
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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
- H04B7/06—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]
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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
- H04B7/06—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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Description
Claims (14)
- 無線接続システムにおいて端末がチャネル状態情報(CSI)を送信する方法であって、
第1CSIプロセスに対する第1報告及び第2CSIプロセスに対する第2報告を提供するステップであって、前記第1報告及び前記第2報告は、ランク指示子(RI)及び広帯域プリコーディング行列指示子(PMI)を報告するタイプ5報告であるステップと、
前記第1報告と前記第2報告とが衝突する場合、前記第1CSIプロセスより高いCSIプロセスインデックスを有する前記第2CSIプロセスの前記第2報告を捨てるステップと、
前記第2報告の第2広帯域PMIを前記第1報告の第1広帯域PMIと同じ値に設定するステップと、
を含み、
前記第2報告の第2RIは、前記第1報告の第1RIと同じ値に設定される、チャネル状態情報送信方法。 - 同一の報告タイプである複数のCSI報告が衝突する場合、前記複数のCSI報告は、最も低いCSIプロセスインデックスを有するCSIプロセスのCSI報告を除いて捨てられる、請求項1に記載のチャネル状態情報送信方法。
- 同一の報告タイプである複数のCSI報告が衝突する場合、最も低いCSIプロセスインデックスを有するCSIプロセスのCSI報告が報告される、請求項1に記載のチャネル状態情報送信方法。
- 前記第1CSIプロセス及び前記第2CSIプロセスに関する情報は、RRCシグナリングを用いて送信される、請求項1に記載のチャネル状態情報送信方法。
- 前記衝突の後、前記第2報告に含まれる情報は、前記第1報告の前記第1広帯域PMIに基づいて決定される、請求項1に記載のチャネル状態情報送信方法。
- 前記衝突の後、前記第1報告と前記第2報告とが衝突しない場合、前記第2報告の前記第2広帯域PMIは、前記第1報告の前記第1広帯域PMIと独立して決定される、請求項1に記載のチャネル状態情報送信方法。
- 無線接続システムにおいて基地局がチャネル状態情報(CSI)を受信する方法であって、
第1CSIプロセスに対する第1報告及び第2CSIプロセスに対する第2報告を受信するステップであって、前記第1報告及び前記第2報告は、ランク指示子(RI)及び広帯域プリコーディング行列指示子(PMI)を報告するタイプ5報告であるステップと、
前記第1報告と前記第2報告とが衝突する場合、前記第2CSIプロセスより低いCSIプロセスインデックスを有する前記第1CSIプロセスの前記第1報告を受信するステップと、
を含み、
前記第2報告の第2RIは、前記第1報告の第1RIと同じ値に設定され、
前記第2報告の第2広帯域PMIは、前記第1報告の第1広帯域PMIと同じ値に設定される、チャネル状態情報受信方法。 - 同じ報告タイプである複数のCSI報告が衝突する場合、前記複数のCSI報告は、最も低いCSIプロセスインデックスを有するCSIプロセスのCSI報告を除いて捨てられる、請求項7に記載のチャネル状態情報受信方法。
- 同一の報告タイプである複数のCSI報告が衝突する場合、最も低いCSIプロセスインデックスを有するCSIプロセスのCSI報告が報告される、請求項7に記載のチャネル状態情報受信方法。
- 前記第1CSIプロセス及び前記第2CSIプロセスに関する情報は、RRCシグナリングを用いて送信される、請求項7に記載のチャネル状態情報受信方法。
- 前記衝突の後、前記第2報告に含まれる情報は、前記第1報告の前記第1広帯域PMIに基づいて決定される、請求項7に記載のチャネル状態情報受信方法。
- 前記衝突の後、前記第1報告と前記第2報告とが衝突しない場合、前記第2報告の前記第2広帯域PMIは、前記第1報告の前記第1広帯域PMIと独立して決定される、請求項7に記載のチャネル状態情報受信方法。
- 無線接続システムにおいてチャネル状態情報(CSI)を送信する端末であって、
RFユニットと、
プロセッサと、
を備え、
前記プロセッサは、
第1CSIプロセスに対する第1報告及び第2CSIプロセスに対する第2報告を提供し、前記第1報告及び前記第2報告は、ランク指示子(RI)及び広帯域プリコーディング行列指示子(PMI)を報告するタイプ5報告であり、
前記第1報告と前記第2報告とが衝突する場合、前記第1CSIプロセスより高いCSIプロセスインデックスを有する前記第2CSIプロセスの前記第2報告を捨て、
前記第2報告の第2広帯域PMIを前記第1報告の第1広帯域PMIと同じ値に設定するように構成され、
前記第2報告の第2RIは、前記第1報告の第1RIと同じ値に設定される、端末。 - 無線接続システムにおいてチャネル状態情報(CSI)を受信する基地局であって、
RFユニットと、
プロセッサと、
を備え、
前記プロセッサは、
第1CSIプロセスに対する第1報告及び第2CSIプロセスに対する第2報告を受信し、前記第1報告及び前記第2報告は、ランク指示子(RI)及び広帯域プリコーディング行列指示子(PMI)を報告するタイプ5報告であり、
前記第1報告と前記第2報告とが衝突する場合、前記第2CSIプロセスより低いCSIプロセスインデックスを有する前記第1CSIプロセスの前記第1報告を受信するように構成され、
前記第2報告の第2RIは、前記第1報告の第1RIと同じ値に設定される、
前記第2報告の第2広帯域PMIは、前記第1報告の第1広帯域PMIと同じ値に設定される、基地局。
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US201361753873P | 2013-01-17 | 2013-01-17 | |
US61/753,873 | 2013-01-17 | ||
PCT/KR2013/007720 WO2014035136A1 (ko) | 2012-08-28 | 2013-08-28 | 무선 통신 시스템에서 채널 상태 정보를 피드백하는 방법 및 이를 위한 장치 |
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US20150036610A1 (en) | 2015-02-05 |
CN104604173A (zh) | 2015-05-06 |
JP6463721B2 (ja) | 2019-02-06 |
JP2015532812A (ja) | 2015-11-12 |
CN104604173B (zh) | 2018-04-20 |
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