Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2006-11-14
2006-11-14
Urban, Edward F. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S518000, C370S484000, C370S340000
Reexamination Certificate
active
07136664
ABSTRACT:
A receiving device in a trunked radio communications system retrieves a first frequency from a scan list and tunes to about the first frequency. If no control channel messages are decoded at the first frequency, then the receiving device tunes to about a second frequency. If no control channel messages are decoded at the second frequency, then the receiving device iterates through the scan list, until the last frequency in the scan list is reached, wherein the scan list comprises control channels for at least two band plans.
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TIA TSB-102.AABC, “Project 25 Trunking Control Channel Messages New Technology Standards Project Digital Radio Technical Standards TR-8.10 Subcomittee”, May 31, 1996.
TIA TSB-102.AABD, “Project 25 Trunking Procedures New Technology Standards Project Digital Radio Technical Standards”, Oct. 1997.
Almasi Andor
Cassidy Marc W.
Trandai Tanhoa
Motorola Inc.
Nguyen Tu X.
Saladi Indira
Urban Edward F.
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