Telecommunications – Radiotelephone system – Special service
Reexamination Certificate
2007-01-11
2010-06-29
Chang, Kent (Department: 2617)
Telecommunications
Radiotelephone system
Special service
C455S414200, C455S422100
Reexamination Certificate
active
07747244
ABSTRACT:
Several related methods and apparatus for re-establishing communication for a wireless communication device after a communication loss between the wireless device and a wireless communication network are disclosed. In one illustrative example, the wireless network broadcasts identifiers of wireless devices associated with communication losses in the wireless network over a control channel. After regaining signal coverage, a wireless device monitors the control channel to decode and compare each broadcasted identifier with an identifier of the wireless device. Based on a match between a broadcasted identifier and the identifier of the wireless device, the wireless device transmits a control message which informs the wireless network of the presence of the wireless device. Otherwise, the wireless device normally refrains from transmitting the control message to the wireless network. Advantageously, communication with the wireless network is re-established (if at all necessary) without overburdening the wireless link with unnecessary traffic.
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Alfano Nicholas P.
Asthana Atul
Buckley Adrian
Dunk Craig A.
Musa Sarmad K.
Chang Kent
Oskorep, Esq. John J.
Research In Motion Limited
Siddiqui Kashif
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