Patent ID: 11877166
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a base station, a radio resource control (RRC) signaling related to a beam failure recovery (BFR) procedure for each of a plurality of serving cells configured with two beam failure detection (BFD)-reference signal (RS) sets;
based on a beam failure being detected for at least one of the two BFD-RS sets configured for at least one serving cell among the plurality of serving cells, triggering the BFR procedure for the at least one of the two BFD-RS sets based on the RRC signaling; and
transmitting, to the base station, an enhanced BFR media access control (MAC)-control element (CE),
wherein the enhanced BFR MAC CE includes i) at least one first field corresponding to each of the at least one serving cell indicating whether the beam failure is detected for a single BFD-RS set among the two BFD-RS sets or all of the two BFD-RS sets, ii) a second field indicating an identity (ID) of at least one BFD-RS set among the two BFD-RS sets, iii) a third field indicating whether the beam failure is detected for at least one of two BFD-RS sets configured for a special cell (SpCell) among the plurality of serving cells, and iv) at least one fourth field corresponding to at least one secondary cell (SCell) among the plurality of serving cells, and
wherein each of the at least one fourth field indicates whether the beam failure is detected for each of the at least one SCell.