US 12,250,746 B1
Method and apparatus for handling end-to-end 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. 8, 2024, as Appl. No. 18/909,543.
Claims priority of provisional application 63/608,739, filed on Dec. 11, 2023.
Claims priority of provisional application 63/548,103, filed on Nov. 10, 2023.
Int. Cl. H04W 76/23 (2018.01); H04W 24/08 (2009.01); H04W 76/14 (2018.01); H04W 88/04 (2009.01)
CPC H04W 76/23 (2018.02) [H04W 24/08 (2013.01); H04W 76/14 (2018.02); H04W 88/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for a source remote User Equipment (UE), comprising:
the source remote UE establishes a PC5 Radio Resource Control (RRC) connection with a relay UE;
the source remote UE establishes at least one end-to-end (E2E) PC5 RRC connection with at least one target remote UE via the relay UE;
the source remote UE transmits at least one configuration of at least one PC5 Relay Radio Link Control (RLC) channel to the relay UE, wherein the at least one PC5 Relay RLC channel is used to transmit data packets for at least one target remote UE, and wherein each configuration of the at least one PC5 Relay RLC channel includes a PC5 RLC configuration and an Identity (ID) of a PC5 Relay RLC channel;
the source remote UE detects an E2E PC5 Radio Link Failure (RLF) associated with a target remote UE among the at least one target remote UE; and
the source remote UE transmits a RRC Reconfiguration Sidelink message to the relay UE in response to the E2E PC5 RLF if a PC5 Relay RLC channel among the at least one PC5 Relay RLC channel is used to transmit data packets for the target remote UE and not shared by any other target remote UE, wherein the RRC Reconfiguration Sidelink message includes information indicating the PC5 Relay RLC channel to be released.