Patent ID: 11936457
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A user equipment (UE) for channel state information (CSI) feedback in a wireless communication system, the UE comprising:
a transceiver configured to receive, from a base station (BS), CSI feedback configuration information; and
a processor operably connected to the transceiver, the processor configured to:
determine, based on the CSI feedback configuration information, the CSI feedback including, for each layer l of a total number of ν layers, a strongest coefficient indicator (SCI) for indicating an index of a strongest coefficient among KNZ,l coefficients, wherein l∈{1, . . . , ν} is a layer index, ν≥1 is a rank value, SCIl is the SCI for layer l, and KNZ,l is a number of non-zero coefficients for layer l;
determine a payload of the SCIl for each layer of the total number of ν layers based on the rank value; and
for each layer l, remap each index ml of the non-zero coefficients with respect to an index ml* associated with the strongest coefficient using a modulo function such that the index ml* is remapped to ml*=0, where ml*∈{0, 1, . . . , M−1};

wherein the transceiver is configured to transmit, to the BS, over an uplink (UL) channel, the CSI feedback including the SCIl for each layer of the total number of ν layers.