US 11,895,548 B2
Link management for a connected user equipment
Fangli Xu, Beijing (CN); Dawei Zhang, Saratoga, CA (US); Haijing Hu, Los Gatos, CA (US); Longda Xing, San Jose, CA (US); Murtaza A. Shikari, Mountain View, CA (US); Sethuraman Gurumoorthy, Cupertino, CA (US); Sree Ram Kodali, San Jose, CA (US); Srinivasan Nimmala, San Jose, CA (US); Srirang A. Lovlekar, Fremont, CA (US); and Yuqin Chen, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Nov. 24, 2020, as Appl. No. 17/247,017.
Claims priority of application No. 201911190754.7 (CN), filed on Nov. 28, 2019.
Prior Publication US 2021/0168682 A1, Jun. 3, 2021
Int. Cl. H04W 36/00 (2009.01); H04W 76/23 (2018.01); H04W 88/04 (2009.01)
CPC H04W 36/03 (2018.08) [H04W 76/23 (2018.02); H04W 88/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method, comprising:
at a base station:
transmitting configuration information to a remote user equipment (UE);
receiving information corresponding to a serving link associated with the remote UE;
determining that the serving link associated with the remote UE is to be switched from a Uu link to a relay link;
transmitting a radio resource control (RRC) reconfiguration message to the remote UE on the Uu link indicating that the serving link associated with the remote UE is to be switched from the Uu link to the relay link;
transmitting a message to a relay UE, wherein the message is configured to trigger the relay UE to establish the relay link with the remote UE;
receiving a RRC reconfiguration complete message from the remote UE via the relay link; and
receiving a message from the relay UE, wherein the message indicates that the relay UE has detected that the relay link to the remote UE is broken.