Overall system selection for user equipment with multiple international mobile subscriber identities

摘要

Wireless communication in a radio access network may be implemented in a manner where a user equipment (UE) with multiple Universal Subscriber Identity Modules (USIMs) selects a system based on the system's preference status among the USIMs of the UE. A system that is home to all the UE's USIMs is selected over one that is home to some USIMs but roaming for others. A system that is home to some USIMs but not provisioned for other USIMs is selected over one that is roaming to all USIMs. A system that is roaming to all USIMs is selected over one that is roaming to some USIMs but not provisioned for other USIMs. Ranking of systems may be done independently by USIM or may be done using a combined ranking method that considers other USIMs prior to an individual USIM indicating a system priority. Manual system selection may also be used.

主权项

1. A method of wireless communication, comprising;
obtaining a first priority system from a first system list of a first International Mobile Subscriber Identity (IMSI) of a user equipment, the first priority system being one of a plurality of systems in the first system list available to the user equipment for a particular call; obtaining a second priority system from a second system list of a second IMSI of the user equipment, the second priority system being one of a plurality of systems in the second system list available to the user equipment for the particular call; and selecting an overall system from the first priority system and the second priority system based at least in part on an overall system priority that prioritizes at least:
a system that is home to one IMSI and roaming to another IMSI over a system that is home to one IMSI but not in a system list of another IMSI;a system that is home to one IMSI but not in a system list of another IMSI over a system that is roaming to both the first IMSI and the second IMSI; ora system that is roaming to both the first IMSI and the second IMSI over a system that is roaming to one IMSI but not in a system list of another IMSI.