Method and apparatus to facilitate detection of an unauthorized communication system user
AssigneeMotorola Mobility LLC
InventorsDean E. Thorson, William R. Bayer, Asif Z. Mehdi
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Abstract
A correlating receiver is used (102) at a code division multiple access base transceiver station to monitor what may comprise possible multi-path versions of a transmission from an authorized communication system user to provide monitoring results. These monitoring results are then used (103) to detect when one of the possible multi-path versions of the transmission was sourced by an unauthorized communication system user while at least another of the possible multi-path versions of the transmission was, in fact, sourced by an authorized communication system user. In a preferred approach the unauthorized communication system user is then identified (104) as being a clone.
Claims20
A method comprising:
- at a code division multiple access base transceiver station:
- using a correlating receiver to monitor what may comprise possible multi-path versions of a transmission from an authorized communication system user to provide monitoring results;
- using the monitoring results to detect that one of the possible multi-path versions of the transmission was sourced by an unauthorized communication system user while at least another of the possible multi-path versions of the transmission was sourced by an authorized communication system user.
An apparatus comprising:
- correlating receiver means for monitoring what may comprise possible multi-path versions of a transmission from an authorized communication system user and providing corresponding monitoring results;
- means for using the monitoring results to detect that one of the possible multi-path versions of the transmission was sourced by an unauthorized communication system user while at least another of the possible multi-path versions of the transmission was sourced by an authorized communication system user.
An apparatus comprising:
- a correlating receiver to monitor what may comprise possible multi-path versions of a transmission from an authorized communication system user and having a corresponding monitoring results output;
- a clone detector being operably coupled to the corresponding monitoring results output and being configured and arranged to detect that one of the possible multi-path versions of the transmission was sourced by an unauthorized communication system user while at least another of the possible multi-path versions of the transmission was sourced by an authorized communication system user.
Dependencies are inferred from the claim text.