Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-05-13
2011-10-11
Edouard, Patrick (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S435100, C455S435200, C455S435300, C455S432200, C455S436000, C455S437000, C455S438000, C455S439000, C455S440000, C455S441000, C455S442000, C455S443000, C455S444000
Reexamination Certificate
active
08036654
ABSTRACT:
A mobile communication device is adapted to provide voice communications with use of a voice service and data communications with use of a data service. The mobile device maintains a preferred network list as well as a service access list in its memory. The preferred network list has a listing of a plurality of networks with assigned priorities for network selection. The service access list has a listing of a plurality of networks that make the data service available to the mobile device. The mobile device performs a scanning operation for identifying one or more communication networks available in a coverage area of the mobile device. When a home network of the mobile device is unavailable in the coverage area, the mobile device consults the preferred network list and the service access list for identifying one of the networks identified by the scanning operation. The mobile device attempts to register for the data service via the identified network and, if successful, operates its wireless transceiver with the identified network to use the data service. If the attempt to register for the data service fails, the mobile device excludes the identified network from being listed in the service access list as making the data service available.
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International Preliminary Examination Report—PCT/CA03/01661—Feb. 9, 2005.
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Church Mark E.
Hind Hugh
Naqvi Noushad
Edouard Patrick
Heiber Shantell L
Oskorep, Esq. John J.
Research In Motion Limited
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