Multiple-transmission-reception-point measurement and transmission in wireless communication system

An apparatus, comprising circuitry configured to:

• receive a channel state information (CSI) report configuration from a base station, the CSI report configuration being associated with a set of CSI reference signal (CSI-RS) resources corresponding to multiple transmission reception points (TRPs), the CSI-RS resources being organized into one or more resource groups, the CSI report configuration including one or more antenna configurations (N1, N2) each corresponding to one or more of the multiple TRPs, the one or more antenna configurations (N1, N2) corresponding to the one or more resource groups, respectively, N1 and N2 being numbers of antenna ports of the respective one or more TRPs in vertical and horizontal directions, respectively, and wherein at least one resource group includes at least two TRPs;
• perform a channel measurement based on the CSI-RS resources corresponding to the multiple TRPs;
• determine a precoder matrix indicator (PMI) based on measurement results of the channel measurement and the one or more antenna configurations (N1, N2) each corresponding to one or more of the multiple TRPs;
• and
• transmit a CSI report to the base station, the CSI report including the PMI.

A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform a method, the method comprising:

• receiving a channel state information (CSI) report configuration from a base station, the CSI report configuration being associated with a set of CSI reference signal (CSI-RS) resources corresponding to multiple transmission reception points (TRPs), the CSI-RS resources being organized into one or more resource groups, the CSI report configuration including one or more antenna configurations (N1, N2) each corresponding to one or more of the multiple TRPs, the one or more antenna configurations (N1, N2) corresponding to the one or more resource groups, respectively, N1 and N2 being numbers of antenna ports of the respective one or more TRPs in vertical and horizontal directions, respectively, and wherein at least one resource group includes at least two TRPs;
• performing a channel measurement based on the CSI-RS resources corresponding to the multiple TRPs;
• determining a precoder matrix indicator (PMI) based on measurement results of the channel measurement and the one or more antenna configurations (N1, N2) each corresponding to one or more of the multiple TRPs;
• and
• transmitting a CSI report to the base station, the CSI report including the PMI.