Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1995-12-12
1999-05-18
To, Doris H.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455454, 455455, 455517, 455552, H04B1/00
Patent
active
059059559
ABSTRACT:
A communication device locates a wireless service provider in a multi-service provider environment by tuning to a first frequency band and receiving a geographic identifier from the service provider operating in the first frequency band. The received geographic identifier is compared to a listing of stored geographic identifiers in order to attempt to locate a matching stored geographic identifier. Each of the stored geographic identifiers are associated with a desirable frequency band having a desirable service provider. If comparing the received geographic identifier with the matching stored geographic identifiers does not produce a match, frequency bands are examined until a second frequency band having a desirable service provider is located. The listing of stored geographic identifiers is then updated so that the second frequency band is associated with the received geographic identifier.
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Bamburak Michael D.
Daly John J.
Lawrence Christopher Gregory
Prise Michael Edward
Raffel Michael Allen
AT&T Wireless Services Inc.
To Doris H.
LandOfFree
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