Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1995-12-04
1998-08-04
Bost, Dwayne
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455419, 455435, 455466, 455552, 370349, H04Q 720, H04Q 722
Patent
active
057909520
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 beacon frequency identifying cellular digital packet data (CDPD) frequencies from which the subscriber unit will select one CDPD frequency corresponding to a service provider operating in the geographic area to which the subscriber has roamed.
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"Cellular Digital Packet Data System Specification", Book I of V, Vol. 1--Overview Glossary, Jul. 19, 1993.
Farris Robert D.
Seazholtz John W.
Bell Atlantic Network Services Inc.
Bost Dwayne
Maung Nay
LandOfFree
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