Channel state information reporting method and device, terminal and network side device

A CSI reporting method for a network side device, comprising:

• configuring a resource set for a terminal, the resource set comprising a plurality of measurement resources;
• transmitting configuration information of the resource set to the terminal,
• wherein the CSI reporting method further comprising:
• configuring a correspondence between CSI-RS port sets and different rank values supported by a transmission node in accordance with the plurality of measurement resources;
• transmitting the correspondence to the terminal.

A terminal, comprising a memory, a processor, and a program stored in the memory and executed by the processor, wherein the processor is configured to execute the program to:

• acquire a resource set configured by a network side device, the resource set comprising a plurality of measurement resources;
• measure a downlink reference signal for a plurality of transmission nodes in accordance with the plurality of measurement resources, to determine a target CSI-RS port set for CSI measurement;
• and
• perform calculation in accordance with the target CSI-RS port set to acquire to-be-reported CSI,
• wherein the processor is further configured to:
• acquire a correspondence between CSI-RS port sets and different rank values supported by the transmission nodes, the correspondence being configured by the network device in accordance with the plurality of measurement resources;
• wherein the measuring the downlink reference signal for the plurality of transmission nodes in accordance with the plurality of measurement resources to determine the target CSI-RS port set for the CSI measurement comprises:
• selecting, from the correspondence in accordance with channel measurement data acquired through measuring the downlink reference signal, one of the rank values as a target rank value, and determining a CSI-RS port set corresponding to the target rank value as the target CSI-RS port set.