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

Claim 14:
15. A user equipment (UE) for transmitting channel state information (CSI) in a wireless communication system, the UE comprising:
a radio frequency (RF) module for transmitting and receiving radio signals; and
a processor for controlling the RF module, wherein the processor configured to:
receive configuration information for CSI reporting from the base station,
wherein the configuration information includes a plurality of codebook parameters related to a configuration of linear combination codebook for the CSI reporting;
receive, from the base station, a reference signal for the CSI reporting;
calculate, based on a compression method in a frequency domain, CSI including a precoding matrix indicator (PMI) for beams linearly combined based on (i) the plurality of codebook parameters and (ii) the reference signal,
wherein the CSI consists of a first part and a second part; and
report the calculated CSI to the base station,
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.