Patent ID: 11956827
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method performed by a terminal for a beam failure recovery, the method comprising:
detecting a beam failure on a serving cell;
identifying a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS) with a reference signal received power (RSRP) above a threshold; and
in case that the serving cell is a secondary cell (SCell), transmitting, to a base station, a media access control (MAC) control element (CE) for the beam failure recovery,
wherein the MAC CE for the beam failure recovery is identified by a logical channel identifier (LCID) in a MAC subheader, and
wherein the MAC CE for the beam failure recovery includes a field Ci set to 1 indicating that the beam failure is detected on the SCell with an index i, and information on the identified SSB or the identified CSI-RS.