Method and apparatus for performing random access procedure for beam failure recovery

A User Equipment (UE) for Beam Failure Recovery (BFR), the UE comprising:

• a memory;
• and
• at least one processor coupled to the memory, the at least one processor being configured to:
• detect a beam failure event on a serving cell;
• determine whether the serving cell is a Special Cell (SpCell) or a Secondary Cell (SCell) to initiate a Random Access (RA) procedure for an SpCell BFR procedure or to trigger an SCell BFR procedure;
• trigger the SCell BFR procedure in a case that the serving cell is the SCell;
• and
• initiate the RA procedure on a Bandwidth Part (BWP) on the serving cell in a case that the serving cell is the SpCell, the RA procedure including:
• performing an RA type selection after determining that the UE is not configured with any Contention-Free RA (CFRA) resource, the RA type selection including determining one of a 2-step RA type and a 4-step RA type as an RA type of the RA procedure based on a Reference Signal Received Power (RSRP) value of a Downlink (DL) pathloss reference;
• determining the RA type as the 2-step RA type in the RA type selection in a case that the RSRP value is larger than a threshold configured by a 2-step RA configuration;
• not performing the RA type selection after determining that the UE is configured with a CFRA resource;
• determining the RA type as the 4-step RA type after not performing the RA type selection in a case that the CFRA resource is a 4-step RA type RA resource;
• and
• determine that the SpCell BFR procedure is completed when the RA procedure is completed.