US 11,792,878 B2
Implicit radio resource control state transitions
Sethuraman Gurumoorthy, San Jose, CA (US); Srirang A. Lovlekar, Cupertino, CA (US); Murtaza A. Shikari, Mountain View, CA (US); Srinivasan Nimmala, San Jose, CA (US); Haijing Hu, Beijing (CN); Fangli Xu, Beijing (CN); Yuqin Chen, Shenzhen (CN); Longda Xing, San Jose, CA (US); Xu Ou, San Jose, CA (US); Li Su, San Jose, CA (US); Vijay Venkataraman, Sunnyvale, CA (US); Dawei Zhang, Saratoga, CA (US); Muthukumaran Dhanapal, Dublin, CA (US); Sree Ram Kodali, Sunnyvale, CA (US); and Srinivas Burugupalli, Union City, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 23, 2021, as Appl. No. 17/482,950.
Application 17/482,950 is a continuation of application No. 16/264,885, filed on Feb. 1, 2019, granted, now 11,166,336.
Claims priority of provisional application 62/629,776, filed on Feb. 13, 2018.
Prior Publication US 2022/0015183 A1, Jan. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 76/27 (2018.01); H04W 76/28 (2018.01); H04W 76/38 (2018.01)
CPC H04W 76/27 (2018.02) [H04W 76/28 (2018.02); H04W 76/38 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A wireless device, comprising:
at least one antenna;
a radio operably coupled to the at least one antenna; and
a processor operably coupled to the radio;
wherein the at least one antenna, the radio and the processor are configured to cause the wireless device to:
transition to a radio resource control (RRC) connected state with a cellular base station;
determine a preferred data inactivity timer length for implicit RRC transitions;
transmit, to the cellular base station, assistance information in an RRC message indicating the preferred data inactivity timer length;
receive, from the cellular base station, an indication of a determined data inactivity timer length;
initiate a data inactivity timer having the determined data inactivity timer length;
determine that the data inactivity timer has expired; and
transition from the RRC connected state based at least in part on determining that the data inactivity timer has expired.