Patent ID: 11881987
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A terminal in a communication system, comprising:
a processor,
wherein the processor causes the terminal to:
search for a plurality of candidate beams when a beam failure is detected;
transmit a beam failure recovery request signal to a base station using a beam #1 among the plurality of candidate beams;
receive from the base station a beam failure recovery response signal that is a response to the beam failure recovery request signal through the beam #1; and
when a beam failure recovery procedure for the beam #1 is succeed, perform a multi-beam configuration procedure using the beam #1 which is a beam recovered by the beam failure recovery procedure,
wherein, when the multi-beam configuration procedure is performed, the processor causes the terminal to:
transmit a scheduling request (SR) to the base station using the beam #1, the SR requesting a resource for transmission of multi-beam configuration information including index(es) of one or more beams excluding the beam #1, which is the beam recovered by the beam failure recovery procedure, among the plurality of candidate beams;
receive an uplink (UL) grant from the base station using the beam #1, the uplink grant being a response to the SR; and
transmit the multi-beam configuration information to the base station using a resource indicated by the UL grant and the beam #1.