Method and system for managing subscriber identity modules on wireless networks for machine to-machine applications
AssigneeNumerex Corp.
InventorsPatrick Aidee, Gregory W. Selig
Life of this patent
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Abstract
A mobile station connected to a wireless network can comprise a subscriber identity module. The subscriber identity module can maintain a list of networks. The list can comprise forbidden public land mobile network data. Software can manage the forbidden public land mobile network data. For example, an applet transmitted to the subscriber identity module can periodically delete entries from the list and/or reset the subscriber identity module on predefined time intervals or when specified events occur.
Claims12
A method, for a mobile station in a machine-to-machine (M2M) application to manage forbidden public land mobile network data maintained at a subscriber identity module (SIM) of the mobile station, the method comprising the steps of:
- tracking time from within the subscriber identity module by counting periodic communications carrying location information;
- determining if the tracked time has met a threshold;
- and
- responsive to a determination that the tracked time has met the threshold, deleting the forbidden public land mobile network data maintained at the subscriber identity module:
- wherein a JAVA applet executing on the subscriber identity module:
- performs the tracking, determining, and deleting steps,
- restores a forbidden public land mobile network data file to a predetermined state when the mobile station fails registration, and
- comprises instructions for daily refreshing mobile equipment connected to the mobile station and the subscriber identity module, and
- wherein a registration failure triggers the JAVA applet to reset the mobile equipment that is connected to the subscriber identity module.
A method, for a mobile station to manage a forbidden public land mobile network data file stored at a subscriber identity module of the mobile station, comprising the steps of:
- estimating time based on counting periodic communications carrying location information;
- and
- in response to the estimated time meeting a threshold, automatically clearing an entry in the data file,
- wherein a JAVA applet executing on the subscriber identity module performs the estimating step by tracking time from within the subscriber identity module,
- wherein the JAVA applet executing on the subscriber identity module performs the automatically clearing step by:
- determining if the tracked time has met a threshold;
- and
- responsive to a determination that the tracked time has met the threshold, deleting forbidden public land mobile network data maintained at the subscriber identity module,
- wherein the JAVA applet restores the forbidden public land mobile network data file to a predetermined state when the mobile station fails registration;
- wherein the mobile station comprises mobile equipment connected to the subscriber identity module,
- wherein the registration failure triggers a reset of the mobile equipment that is connected to the subscriber identity module, and
- wherein the JAVA applet comprises instructions for refreshing the mobile equipment and the subscriber identity module on a predetermined time interval.
A method for a JAVA applet to manage a forbidden public land mobile network data file comprising forbidden public land mobile network data stored in memory of a subscriber identity module of a mobile station, the method comprising transmitting the JAVA applet over a cellular network for receipt at the mobile station and automated loading on the subscriber identity module,
- wherein the JAVA applet comprises instructions for:
- tracking time from within the subscriber identity module by counting periodic communications transmitted over the cellular network that carry location information;
- determining if the tracked time has met a threshold by determining when a predetermined number of communications have been counted;
- responsive to a determination that the tracked time has met the threshold, deleting the forbidden public land mobile network data stored in memory of the subscriber identity module;
- a registration failure to trigger the JAVA applet to reset mobile equipment that is connected to the subscriber identity module;
- restoring the forbidden public land mobile network data file to a predetermined state when the mobile station fails registration;
- and
- refreshing the mobile equipment at least daily.
Dependencies are inferred from the claim text.