Cellular verification and validation system
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United States of America Patent
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Aug 17, 1993
Grant Date -
N/A
app pub date -
Mar 29, 1991
filing date -
Mar 29, 1991
priority date (Note) -
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Abstract
A system for the validation and verification of base stations and mobile stations within a cellular radio communications network. The system includes a fixed key and a changeable key which are applied as inputs to an authentication algorithm. The algorithm generates key-dependent responses, at least one of which is independent of the changeable key. The responses generated by a particular mobile station are compared to the responses generated by the network and the presence of fraudulent users may be detected.
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