UNAUTHORIZED CALL ACTIVITY DETECTION IN A CELLULAR COMMUNICATION SYSTEM
First Claim
1. An apparatus for detection of unauthorized call activity in a cellular communication system, the apparatus comprising:
- means for receiving call log data from a cellular subscriber unit having an associated subscriber identity over an air interface communication link;
means for receiving subscriber unit specific billing data from a billing processor of the cellular communication system;
detection means for detecting an unauthorized call activity for the associated subscriber identity in response to a comparison of the billing data and the call log data.
2 Assignments
0 Petitions
Accused Products
Abstract
A cellular communication system (100) includes a subscriber unit (101) having an associated subscriber identity. The subscriber unit (101) transmits call log data over an air interface communication link. The call log data is generated locally in the subscriber unit (101). A billing processor (117) generates billing data for the subscriber unit (101). The billing data can be generated in the fixed network in response to characteristics and the operation of the fixed network. A call activity processor (119) comprises a call log data processor (203) which receives the call log data from the cellular subscriber unit (101) and a billing data processor (205) which receives subscriber unit specific billing data from the billing processor (117). A comparison processor (207) then compares the billing data and the call log data and determines if unauthorized call activity has occurred.
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Citations
10 Claims
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1. An apparatus for detection of unauthorized call activity in a cellular communication system, the apparatus comprising:
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means for receiving call log data from a cellular subscriber unit having an associated subscriber identity over an air interface communication link; means for receiving subscriber unit specific billing data from a billing processor of the cellular communication system; detection means for detecting an unauthorized call activity for the associated subscriber identity in response to a comparison of the billing data and the call log data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of detecting unauthorized call activity in a cellular communication system, the method comprising:
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receiving call log data from a cellular subscriber unit having an associated subscriber identity over an air interface communication link; receiving subscriber unit specific billing data from a billing processor of the cellular communication system; and detecting an unauthorized call activity for the associated subscriber identity in response to a comparison of the billing data and the call log data.
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Specification