US 11,910,457 B2
Unicast sidelink access stratum level connection maintenance
Yuqin Chen, Shenzhen (CN); Murtaza A. Shikari, Mountain View, CA (US); Sree Ram Kodali, Sunnyvale, CA (US); Srirang A. Lovlekar, Cupertino, CA (US); Sethuraman Gurumoorthy, San Jose, CA (US); Haitong Sun, Irvine, CA (US); Fangli Xu, Beijing (CN); Haijing Hu, Beijing (CN); Dawei Zhang, Saratoga, CA (US); Srinivasan Nimmala, San Jose, CA (US); Longda Xing, San Jose, CA (US); and Xu Ou, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jan. 10, 2020, as Appl. No. 16/739,952.
Claims priority of provisional application 62/799,586, filed on Jan. 31, 2019.
Prior Publication US 2020/0252989 A1, Aug. 6, 2020
Int. Cl. H04W 76/18 (2018.01); H04W 76/25 (2018.01); H04W 24/08 (2009.01); H04L 1/00 (2006.01); H04W 76/19 (2018.01); H04W 80/08 (2009.01); H04W 4/40 (2018.01); H04W 76/27 (2018.01); H04L 5/00 (2006.01); H04W 92/18 (2009.01)
CPC H04W 76/18 (2018.02) [H04L 1/0026 (2013.01); H04L 5/0055 (2013.01); H04W 4/40 (2018.02); H04W 24/08 (2013.01); H04W 76/19 (2018.02); H04W 76/25 (2018.02); H04W 76/27 (2018.02); H04W 80/08 (2013.01); H04W 92/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a memory; and
a processor in communication with the memory and configured to cause a first wireless device to:
establish a unicast sidelink wireless connection with a second wireless device; and
perform access stratum measurements for the unicast sidelink wireless connection, wherein to perform the access stratum measurements for the unicast sidelink wireless connection, the first wireless device is further configured to:
measure a plurality of characteristics of the unicast sidelink wireless connection, wherein the plurality of characteristics of the unicast sidelink wireless connection include at least a sidelink reference signal received power (SL RSRP); and
provide a measurement report to the second wireless device based at least in part on measuring the plurality of characteristics of the unicast sidelink wireless connection;
receive, by an access stratum layer of the first wireless device, an indication from an upper layer of the first wireless device that the unicast sidelink wireless connection with the second wireless device has been released at the upper layer of the first wireless device; and
release a radio resource control connection of the unicast sidelink wireless connection with the second wireless device based at least in part on the indication from the upper layer of the first wireless device.