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

Claim 15:
16. A base station in a communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit, to a terminal, a radio resource control (RRC) message including configuration information associated with a medium access control (MAC) control element (CE) for beam failure recovery,
in case that a beam failure is in a first cell,
in case that a configuration of a physical uplink control channel (PUCCH) for a scheduling request (SR) for requesting uplink resources is not provided to the terminal,
receive, from the terminal, a first random access preamble associated with the beam failure recovery,
transmit, to the terminal, a first random access response associated with the first random access preamble, and
receive, from the terminal, the MAC CE for the beam failure recovery for the first cell associated with the configuration information and the first random access response, and

in case that the configuration of the PUCCH is provided for the terminal:
receive, from the terminal, the SR associated with the configuration of the PUCCH,
transmit, to the terminal, scheduling information for the uplink resources requested by the SR, and
receive, from the terminal, the MAC CE for the beam failure recovery for first cell on the uplink resources.