Patent ID: 9307512
Filing Date: 2016-04-05
CPC Classification: H04W

Claim Text:
1. A method of managing a multiple subscriber identification module (multi-SIM) wireless communication device having at least a first SIM and a second SIM sharing a single radio resource, comprising: evaluating criticality of communication services supported by each of the first SIM and the second SIM by identifying, among the first and second SIMs, a SIM supporting higher criticality communication services and a SIM supporting lower criticality communication services; granting use of the radio resource to a modem stack associated with the SIM supporting the higher criticality communication services; determining whether the SIM supporting the higher criticality communication services has successfully registered in a first selected network; allowing the SIM supporting the lower criticality communication services to register for service in a second selected network in response to determining that the SIM supporting the higher criticality communication services has registered in the first selected network; and preventing the SIM supporting the lower criticality communication services from registering in the second selected network in response to determining that the SIM supporting the higher criticality communication services has not successfully registered in the first selected network.