Processing method of channel state information (CSI), and base station and terminal

The invention provides a processing method of channel state information (CSI), a base station and a terminal. The method comprises the following steps: the base station configures a plurality of channel state information reference signal (CSI-RS) resource signalings of a terminal side through a UE-specific high level signaling, and sends the CSI-RS resource signalings to the terminal; the base station generates the CSI-RS according to the plurality of the CSI-RS resource signalings; and the base station sends the CSI-RS to the terminal in a corresponding time domain and frequency domain resource and receives the CSI or a reference signal received power (RSRP) which are fed back by the terminal. Each of the CSI-RS resource signalings at least comprises: antenna port number indication information, time domain and frequency domain position information of a CSI-RS resource in a subframe, period and subframe bias information of the CSI-RS resource subframe, power information of the CSI-RS resource, and information of bandwidth used by the CSI-RS resource. According to the invention, the UE is enabled to select accurately a transmission point (TP) in a condition of an unequal bandwidth and obtain the accurate CSI measurement in the coordinated multiple points (CoMP) technology.