Telecommunications – Transmitter and receiver at separate stations
Patent
1994-12-22
1997-03-18
Pham, Chi H.
Telecommunications
Transmitter and receiver at separate stations
455 341, 455 541, 379 60, H04Q 722, H04B 726
Patent
active
056132042
ABSTRACT:
A cellular telephone system is upgraded by modifying subscriber units for selective service provider acquisition-during roaming. Priority of acquisition is given to those service providers associated with the home service provider. These preferred service providers are identified by System Identification (SIDs) numbers. A roaming subscriber unit will tune to a single broadcast frequency to identify available system providers operating in a physical area to which the subscriber has roamed.
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Braun Robert T.
Haberman Michael
McHenry James F.
Bell Atlantic Mobile Systems, Inc.
Pham Chi H.
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