US 12,256,457 B1
Method and apparatus for handling PC5 radio link failure in a wireless communication system
Richard Lee-Chee Kuo, Taipei (TW)
Assigned to ASUS Technology Licensing Inc., Taipei (TW)
Filed by ASUS Technology Licensing Inc., Taipei (TW)
Filed on Oct. 15, 2024, as Appl. No. 18/916,052.
Claims priority of provisional application 63/608,726, filed on Dec. 11, 2023.
Int. Cl. H04W 76/20 (2018.01); H04W 76/10 (2018.01); H04W 76/30 (2018.01); H04W 92/18 (2009.01)
CPC H04W 76/20 (2018.02) [H04W 76/10 (2018.02); H04W 76/30 (2018.02); H04W 92/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a relay User Equipment (UE), comprising:
the relay UE establishes a first PC5 Radio Resource Control (RRC) connection with a first remote UE and establishes a second PC5 RRC connection with a second remote UE;
the relay UE transmits configurations of multiple PC5 Relay Radio Link Control (RLC) channels to the first remote UE, wherein each of the multiple PC5 Relay RLC channels is configured for forwarding data packets received from at least the second remote UE to the first remote UE;
the relay UE detects a PC5 radio link failure (RLF) with the second remote UE; and
the relay UE transmits a RRC Reconfiguration Sidelink message to the first remote UE, in response to detection of the PC5 RLF, if a PC5 Relay RLC channel among the multiple PC5 Relay RLC channels is not associated with any end-to-end sidelink data radio bearer (DRB), wherein the RRC Reconfiguration Sidelink message includes information indicating the PC5 Relay RLC channel to be released.