US Patent No. 10,602,549

METHOD AND APPARATUS OF HANDLING BEAM FAILURE RECOVERY IN A WIRELESS COMMUNICATION SYSTEM


Patent No. 10,602,549
Issue Date March 24, 2020
Title Method And Apparatus Of Handling Beam Failure Recovery In A Wireless Communication System
Inventorship Hsin-Hsi Tsai, Taipei (TW)
Yu-Hsuan Guo, Taipei (TW)
Yi-Hsuan Kung, Taipei (TW)
Jia-Hong Liou, Taipei (TW)
Assignee ASUSTek Computer Inc., Taipei (TW)

Claim of US Patent No. 10,602,549

1. A method for a User Equipment (UE), comprising:receiving a Random Access Channel (RACH) configuration from a network node, wherein the RACH configuration indicates at least one Physical Random Access Channel (PRACH) resource for a beam failure recovery;
receiving a timing advance command from the network node;
starting or restarting a time alignment timer when receiving the timing advance command;
initiating a contention free random access procedure for the beam failure recovery by using the at least one PRACH resource for the beam failure recovery when detecting a beam failure and the timing alignment timer is running; and
releasing the at least one PRACH resource for the beam failure recovery indicated by the RACH configuration when the timing alignment timer expires.