Patent ID: 11924665
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 10:
11. A terminal in a communication system, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
receive a radio resource control (RRC) message including configuration information associated with a medium access control (MAC) control element (CE) for beam failure recovery,
detect beam failure based on a quality of a signal associated with the beam failure being lower than a first threshold, and
based on the beam failure being detected in a first cell:
based on a configuration of a physical uplink control channel (PUCCH) for transmitting a scheduling request (SR) for requesting uplink resources being not provided for the terminal:
transmit a first random access preamble,
receive a first random access response associated with the first random access preamble, and
transmit the MAC CE for beam failure recovery for the first cell based on the configuration information and the first random access response, and

based on the configuration of the PUCCH being provided for the terminal:
transmit, based on the configuration of the PUCCH, the SR,
receive scheduling information for the uplink resources requested by the SR, and
transmit, on the uplink resources, the MAC CE for the beam failure recovery for first cell.