Patent ID: 11923947
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A non-transitory computer readable storage medium having a computer program stored thereon, the computer program which, when executed by a processor of a user equipment, cause the user equipment to perform operations comprising:
receiving a random access configuration for an ordinary random access procedure from a network;
receiving a message comprising a specific random access configuration for beam failure recovery from the network,
wherein the specific random access configuration for the beam failure recovery differs from the random access configuration for the ordinary random access procedure,
wherein the specific random access configuration for the beam failure recovery comprises a size of random access response (RAR) window for the beam failure recovery, a contention free random access, or both the size of the RAR window and the contention free random access, and
wherein the size of the RAR window for the beam failure recovery differs from a size of a RAR window for the ordinary random access procedure, and usage of contention free random access resources differ between the contention free random access for the beam failure recovery and a contention free random access for the ordinary random access procedure;

determining a beam failure event; and
performing a random access procedure for the beam failure recovery using the received specific random access configuration, the random access procedure being performed comprises:
selecting a candidate beam with a Reference Signal Received Power (RSRP) higher than a threshold; and
attempting random access via the selected candidate beam.