US 12,452,935 B2
Method and apparatus for supporting discovery integrated into direct link establishment procedure in a wireless communication system
Li-Te Pan, Taipei (TW)
Assigned to ASUS Technology Licensing Inc., Taipei (TW)
Filed by ASUS Technology Licensing Inc., Taipei (TW)
Filed on Nov. 22, 2023, as Appl. No. 18/518,011.
Claims priority of provisional application 63/428,001, filed on Nov. 25, 2022.
Prior Publication US 2024/0179764 A1, May 30, 2024
Int. Cl. H04W 76/10 (2018.01); H04W 76/14 (2018.01); H04W 76/18 (2018.01); H04W 76/38 (2018.01); H04W 88/04 (2009.01); H04W 92/18 (2009.01)
CPC H04W 76/10 (2018.02) [H04W 76/14 (2018.02); H04W 76/18 (2018.02); H04W 76/38 (2018.02); H04W 88/04 (2013.01); H04W 92/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a relay User Equipment (UE), comprising:
receiving, by the relay UE, a first PC5 message from a first remote UE for initiating a first direct link establishment procedure for supporting a UE-to-UE (U2U) relay communication between the first remote UE and a second remote UE via the relay UE;
sending, by the relay UE and in response to reception of the first PC5 message, a second PC5 message to the second remote UE for initiating a second direct link establishment procedure for supporting the U2U relay communication, wherein the second PC5 message includes at least one of an upper layer identity or an application layer identity identifying the second remote UE, and wherein the relay UE starts a timer T5080 for the second direct link establishment procedure associated with the second remote UE; and
sending, by the relay UE, a reject message corresponding to the first PC5 message to the first remote UE in the first direct link establishment procedure in response to the second direct link establishment procedure not being completed within a period that is controlled based on the timer T5080.
 
20. A relay User Equipment (UE), comprising:
a control circuit;
a processor installed in the control circuit; and
a memory installed in the control circuit and operatively coupled to the processor;
wherein the processor is configured to execute a program code stored in the memory to:
receive a first PC5 message from a first remote UE for initiating a first direct link establishment procedure for supporting a UE-to-UE (U2U) relay communication between the first remote UE and a second remote UE via the relay UE;
send, in response to reception of the first PC5 message, a second PC5 message including information, comprising at least one of an upper layer identity or an application layer identity, identifying the second remote UE for initiating a second direct link establishment procedure for supporting the U2U relay communication; and
without a link having been established between the relay UE and the first remote UE nor between the relay UE and the second remote UE, send a reject message corresponding to the first PC5 message to the first remote UE when the second direct link establishment procedure is not completed within a period that is controlled based on a timer such that neither the first direct link establishment procedure nor the second direct link establishment procedure is completed successfully.