Method and apparatus for example relates to a downlink channel state information of the embodiment of the invention, the method comprises the following steps: first CRS CRS weighted to the first cell through the public terminal equipment is the weighted matrix; the first CRS is sent to the terminal equipment; instructions PMI and channel quality indicator CQI pre encoding matrix sending and receiving terminal equipment, PMI in order to get the first CRS measurement terminal equipment, CQI for the first CRS measurement terminal equipment; according to the weighted matrix, PMI and CQI downlink channel state information acquisition terminal equipment, the feature vector of the downlink channel state information including channel channel or downlink channel covariance matrix; the logical antenna number first cell 4, the precoding matrix matrix to meet the continuous changes in the time domain. The acquisition method and device of the downlink channel state information provided by the invention can improve the accuracy of obtaining the state information of the downlink channel.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。
【技术保护点】
PCT国内申请，权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请，...
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