Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-08-08
2006-08-08
Ferguson, Keith (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S403000, C455S414100, C455S414400, C455S466000, C455S426100, C455S422100, C455S500000, C370S352000, C370S353000, C370S354000, C370S355000, C370S356000, C370S357000
Reexamination Certificate
active
07089012
ABSTRACT:
The present embodiments provide apparatuses, methods and systems for use in notifying a remote communication device when a local wireless device loses its wireless link. In some embodiments, a method detects when a wireless connection is lost with a first communication device, identifies a second communication device that is communicating with the first device, and notifies the second device of the lost link. In some implementations, the notification of the lost link is supplied while the method provides batch communications. Some embodiments provide voice communications, where a remote device is notified when a local device loses its wireless connection. The second device can be determined by querying a server. The notifying can include forwarding an in-band tone, and/or generating a real time protocol packet. In some embodiments, the loss of the link is detected through a radio access network, a packet control function, and/or a mobile switching center.
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iDEN RF Interface: Layer 3 Procedures for Dispatch and Packet Data Operation, more tham 1 year prior to Jul. 29, 2004.
Crocker Ronald T.
Harris John M.
Hart Thomas B.
Ferguson Keith
Motorola Inc.
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