US 11,696,114 B2
Steering of roaming PLMN list update and management
Sridhar Prakasam, Fremont, CA (US); Qi He, San Jose, CA (US); Rohit Matolia, Surat (IN); Shashanka Totadamane Ramappa, Bengaluru (IN); Nirlesh Koshta, Karntaka (IN); Xiangpeng Jing, Palo Alto, CA (US); Krisztian Kiss, Hayward, CA (US); Nitin Kuppelur, Bangalore (IN); Kavya Ravikumar, San Diego, CA (US); Rajkumar Krishnaperumal, Bangalore (IN); Pradeep Pangi, Bengaluru (IN); Karthik Anantharaman, Cupertino, CA (US); Alosious Pradeep Prabhakar, Singapore (SG); Vijay Venkataraman, San Jose, CA (US); Lester Chan, Cupertino, CA (US); and Madhusudhan Cheripally, Bengaluru (IN)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 3, 2021, as Appl. No. 17/393,063.
Claims priority of application No. 202041034686 (IN), filed on Aug. 12, 2020.
Prior Publication US 2022/0053313 A1, Feb. 17, 2022
Int. Cl. H04W 8/12 (2009.01); H04W 8/28 (2009.01); H04W 8/20 (2009.01); H04W 84/04 (2009.01)
CPC H04W 8/12 (2013.01) [H04W 8/20 (2013.01); H04W 8/28 (2013.01); H04W 84/042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a memory; and
a processor in communication with the memory, wherein the processor is configured to:
receive, from a network, a steering of roaming (SoR) container, wherein the SoR container includes a list of operator preferred public land mobile network (OPLMNs);
store a prior list of OPLMNs stored on a universal subscriber identity module (USIM) on the memory;
replace the prior list of OPLMNs stored on the USIM with the list of OPLMNs included in the SoR container; and
treat, in response to losing a signal to a cell on a visited PLMN (VPLMN), PLMNs in an SoR aborted list as a lower priority than PLMNs stored on the USIM.