0779752-A2 is referenced by 53 patents and cites 3 patents.

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.

Title
A method for selecting a wireless service provider in a multi-service provider environment using a geographic database
Application Number
EP19960120005 19961212
Publication Number
0779752 (A2)
Application Date
December 12, 1996
Publication Date
June 18, 1997
Inventor
Raffel Michael Allen
US
Prise Michael Edward
US
Lawrence Christopher Gregory
US
Daly John J
US
Bamburak Michael D
US
Assignee
At & T Wireless Services
US
IPC
H04Q 07/38
H04B 07/26
H04Q 07/22
H04W 48/00
H04W 48/18
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