JP6643084B2 - 無線通信システムでチャネル状態情報送受信方法及び装置 - Google Patents
無線通信システムでチャネル状態情報送受信方法及び装置 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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
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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
- H04B7/0413—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
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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
- H04B7/0621—Feedback content
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
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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
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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Description
rankHV=rank(RIH)×rank(RIV)
110 送信アンテナ
120、130 無線信号
1800、1900 基地局制御機
1810、1910 送信機
1820、1920 受信機
Claims (8)
- 端末のチャネル状態情報(Channel State Information)送信方法において、
1つのセルから第1チャネル状態情報基準信号(CSI−RS;Channel State Information Reference Signal)及び第2CSI−RSを受信する段階と、
前記第1CSI−RS及び前記第2CSI−RSのうち1つのCSI−RSを指示するチャネル状態情報指示子を第1タイミングに送信する段階と、
前記送信されたチャネル状態情報指示子によって指示された前記1つのCSI−RSに基づいて生成されたチャネル品質指示子(CQI;Channel Quality Indicator)を第2タイミングに送信する段階と、を含み、
前記チャネル状態情報指示子の伝送周期は、前記CQIの伝送周期の整数倍であり、
前記チャネル状態情報指示子のサブフレームオフセット値は、前記CQIのサブフレームオフセット値と異なることを特徴とするチャネル状態情報送信方法。 - 前記CQIは、プレコーディングマトリックス指示子(PMI;Precoding Matrix Indicator)と共に送信されることを特徴とする請求項1に記載のチャネル状態情報送信方法。
- チャネル状態情報(Channel State Information)を送信する端末において、
受信機と、
送信機と、
1つのセルから第1チャネル状態情報基準信号(CSI−RS;Channel State Information Reference Signal)及び第2CSI−RSを受信し、前記第1CSI−RS及び前記第2CSI−RSのうち1つのCSI−RSを指示するチャネル状態情報指示子を第1タイミングに送信し、前記送信されたチャネル状態情報指示子によって指示された前記1つのCSI−RSに基づいて生成されたチャネル品質指示子(CQI;Channel Quality Indicator)を第2タイミングに送信するように制御する制御部と、を含み、
前記チャネル状態情報指示子の伝送周期は、前記CQIの伝送周期の整数倍であり、
前記チャネル状態情報指示子のサブフレームオフセット値は、前記CQIのサブフレームオフセット値と異なることを特徴とする端末。 - 前記CQIは、プレコーディングマトリックス指示子(PMI;Precoding Matrix Indicator)と共に送信されることを特徴とする請求項3に記載の端末。
- 基地局のチャネル状態情報(Channel State Information)受信方法において、
1つのセルを介して第1チャネル状態情報基準信号(CSI−RS;Channel State Information Reference Signal)及び第2CSI−RSを送信する段階と、
前記第1CSI−RS及び前記第2CSI−RSのうち1つのCSI−RSを指示するチャネル状態情報指示子を第1タイミングに受信する段階と、
前記受信されたチャネル状態情報指示子によって指示された前記1つのCSI−RSに基づいて生成されたチャネル品質指示子(CQI;Channel Quality Indicator)を第2タイミングに受信する段階と、を含み、
前記チャネル状態情報指示子の伝送周期は、前記CQIの伝送周期の整数倍であり、
前記チャネル状態情報指示子のサブフレームオフセット値は、前記CQIのサブフレームオフセット値と異なることを特徴とするチャネル状態情報受信方法。 - 前記CQIは、プレコーディングマトリックス指示子(PMI;Precoding Matrix Indicator)と共に受信されることを特徴とする請求項5に記載のチャネル状態情報受信方法。
- チャネル状態情報(Channel State Information)を受信する基地局において、
送信機と、
受信機と、
1つのセルを介して第1チャネル状態情報基準信号(CSI−RS;Channel State Information Reference Signal)及び第2CSI−RSを送信し、前記第1CSI−RS及び前記第2CSI−RSのうち1つのCSI−RSを指示するチャネル状態情報指示子を第1タイミングに受信し、前記受信されたチャネル状態情報指示子によって指示された前記1つのCSI−RSに基づいて生成されたチャネル品質指示子(CQI;Channel Quality Indicator)を第2タイミングに受信するように制御する制御部と、を含み、
前記チャネル状態情報指示子の伝送周期は、前記CQIの伝送周期の整数倍であり、
前記チャネル状態情報指示子のサブフレームオフセット値は、前記CQIのサブフレームオフセット値と異なることを特徴とする基地局。 - 前記CQIは、プレコーディングマトリックス指示子(PMI;Precoding Matrix Indicator)と共に受信されることを特徴とする請求項7に記載の基地局。
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