Patent ID: 11871260
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method for receiving channel state information (CSI) by a base station in a wireless communication system, comprising:
transmitting configuration information for CSI reporting to a user equipment (UE),
wherein the configuration information includes a plurality of codebook parameters related to a configuration of linear combination codebook for the CSI reporting;
transmitting, to the UE, a reference signal for the CSI reporting; and
receiving, from the UE, the CSI including a precoding matrix indicator (PMI) for beams linearly combined,
wherein the CSI consists of a first part and a second part,
wherein a size of a payload of the second part is determined based on at least one parameter among the plurality of codebook parameters,
wherein based on a capacity of a resource allocated to report the CSI being smaller than a size of a payload of the CSI calculated based on the plurality of codebook parameters, the size of the payload of the second part is reduced until the size of the payload of the CSI becomes less than or equal to the capacity of the resource, and
wherein the size of the payload of the second part is reduced by reducing a number of co-efficients generated based on the at least one parameter.