Method and apparatus to restore always-on connectivity during network handover
AssigneeResearch In Motion Limited
InventorsMuhammad Khaledul Islam, Jeffrey Wirtanen, Jean-Philippe Cormier, Dimitrios Prodanos
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Abstract
A method and apparatus to restore always on connectivity to user equipment, the method having the steps of: monitoring whether the user equipment has transitioned to a network that supports concurrent voice and data; performing, upon the monitoring step detecting the transition, a routing area update; checking whether the user equipment was in a voice call at the time of the transition, and if yes, sending a data packet to the network.
Claims18
A method to restore a suspended packet switched service to user equipment in a network that supports concurrent voice and data, the method comprising the steps of:
- detecting whether the user equipment is transitioning from a first network that does not support concurrent voice and data and in which a packet switched service is suspended to a second network that supports said concurrent voice and data;
- and
- upon detecting that the user equipment is in a voice call during the transition and without reference to routing area or location information, sending a data packet by the user equipment to the second network before a routing area update has occurred, the sending of the data packet for forcing said routing area update to be performed, for restoring the suspended packet switched service.
Always-on user equipment configured to restore a suspended packet switched service during handover to a network, the network supporting concurrent voice and data the user equipment having a radio subsystem including a radio configured to communicate with the mobile network;
- a radio processor having a digital signal processor and configured to interact with said radio subsystem;
- memory;
- a user interface;
- a processor configured to run user applications and interact with the memory, the radio and the user interface and configured to run applications, the user equipment further configured to:
- detect whether the user equipment is transitioning from a first network that does not support concurrent voice and data and in which a packet switched service is suspended to a second network that supports said concurrent voice and data;
- and
- upon detecting that the user equipment is in a voice call during the transition and without reference to routing area or location information, send a data packet by the user equipment to the second network before a routing area update has occurred, the sending of the data packet for forcing said routing area update to be performed, to restore the suspended packet switched service.
Dependencies are inferred from the claim text.