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发明授权
CN106209195B 信道状态信息获取方法、信道状态信息反馈方法及装置 有权 转让

信道状态信息获取方法、信道状态信息反馈方法及装置
摘要：
本发明公开了信道状态信息获取方法、信道状态信息反馈方法及装置，包括：终端根据接收到的导频信号进行信道估计，得到A个天线端口的信道估计值，所述A个天线端口为网络设备发送导频信号的A个天线端口；所述终端根据所述A个天线端口的信道估计值确定Q个天线端口，其中，L≤Q≤A，L为所述网络设备对所述终端发送下行数据时采用的秩指示RI的取值，或者，L为所述终端确定的信道秩指示RI的取值；所述终端根据所述Q个天线端口确定第一级预编码矩阵指示信息，并将包含所述第一级预编码矩阵指示信息的信道状态信息CSI反馈给网络设备，所述第一级预编码矩阵指示信息用于指示所述Q个天线端口在发送导频信号的A个天线端口中的索引。
摘要（英）：

The present disclosure provides a CSI acquisition method, a CSI feedback method and devices thereof. The CSI feedback method includes steps of: performing, by a terminal, channel estimation on a received pilot signal to acquire channel estimation values of A antenna ports for transmitting the pilot signal to a network device; determining, by the terminal, Q antenna ports based on the channel estimation values of the A antenna ports, L‰¤Q‰¤L, L representing a value of a RI adopted by the network device in the case of transmitting downlink data to the terminal or a value of a RI of a channel determined by the terminal; and determining, by the terminal, a first-level PMI based on the Q antenna ports, and feeding back CSI containing the first-level PMI to the network device, the first-level PMI being used to indicate indices of the Q antenna ports among the A antenna ports for transmitting the pilot signal.

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