US 12,302,226 B2
Unified access control (UAC) enhancement for sidelink relay
Fangli Xu, Beijing (CN); Zhibin Wu, San Diego, CA (US); Yuqin Chen, Saratoga, CA (US); Sarma V Vangala, Cupertino, CA (US); Naveen Kumar R Palle Venkata, San Diego, CA (US); Sethuraman Gurumoorthy, San Diego, CA (US); Srirang A Lovlekar, Fremont, CA (US); Haijing Hu, Saratoga, CA (US); and Dawei Zhang, San Diego, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/766,546
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed May 8, 2021, PCT No. PCT/CN2021/092294
§ 371(c)(1), (2) Date Apr. 5, 2022,
PCT Pub. No. WO2022/236455, PCT Pub. Date Nov. 17, 2022.
Prior Publication US 2024/0056954 A1, Feb. 15, 2024
Int. Cl. H04W 48/16 (2009.01); H04W 76/20 (2018.01)
CPC H04W 48/16 (2013.01) [H04W 76/20 (2018.02)] 20 Claims
OG exemplary drawing
 
5. A user equipment (UE) configured as a remote UE using a relay UE to communicate with a base station, comprising:
one or more processors configured to:
receive a unified access control (UAC) barring control information from the relay UE;
perform an access control check to determine whether an access attempt is authorized by the base station based on the received UAC barring control information;
transmit a radio resource control (RRC) signaling to request for establishing or resuming RRC connection to the relay UE in response to determining that the access attempt is authorized and starting a first timer when transmitting the RRC signaling; and
receive a RRC setup/reject message from the base station through the relay UE or a relay failure message from the relay UE, and stopping the first timer in response to receiving the RRC setup/reject message or the relay failure message.