Patent ID: 8649789
Filing Date: 2014-02-11
Classification: H04W

Abstract:
1. A method for supporting a wireless communication call on a mobile device having a VSIM (Visual Subscriber Indentity Module) internal memory unit having stored therein provisioning data for a first plurality of service contracts, comprising: determining whether the mobile device is currently roaming; determining whether the mobile device is currently conducting a wireless communication call; and enabling access to a new home system that is currently available to the mobile device when the mobile device is currently roaming and not currently conducting a wireless communication call, wherein enabling access to a new home system comprises: identifying all new home systems operating in a current location of the mobile device, wherein each home system supports a second plurality of service contracts; receiving a selection of one of the second plurality of service contracts supported by an identified new home system operating in the current location of the mobile device; retrieving provisioning data corresponding to the selected one of the second plurality of service contracts supported by the identified new home system; copying the provisioning data for the selected one of the second plurality of service contracts supported by the identified new home system into an enabled VSIM provisioning data buffer, wherein the provisioning data includes acquisition parameters for communication networks associated with the identified new home system; and establishing a communication link to the identified new home system using the retrieved provisioning data.