公开(公告)号：US20210400575A1

公开(公告)日：2021-12-23

申请号：US17304291

申请日：2021-06-17

Applicant: Apple Inc.

Inventor： Xiangpeng JING ,  Sivaramachandran GANESAN ,  Karthik ANANTHARAMAN ,  Lester K. CHAN ,  Qi HE

IPC: H04W48/18 ,  H04W48/16 ,  H04W4/02 ,  H04W8/02 ,  H04W8/18 ,  H04W72/10

Abstract: A user equipment (UE) is configured to prioritize a plurality of Public Land Mobile Networks (PLMNs) from an aggregate roaming priority public land mobile network (RPPLMN) list containing the plurality of PLMNs into a plurality of prioritized PLMNs and connect to a selected PLMN from the plurality of prioritized PLMNs based on a priority of the selected PLMN. The UE is further configured to determine if an application processor (AP) assisted location service is available, wherein the AP-assisted service is configured to identify a plurality of deployed PLMNs and a plurality of frequencies used by the plurality of deployed PLMNs at a current geographical location of the UE and when the AP) assisted location service is available, determining if a registered PLMN (RPLMN) is valid in a current mobile country code (MCC).