Method of detecting unauthorized use of a wireless communication channel
AssigneeMotorola, Inc.
InventorsGary W. Grube, Timothy W. Markison, Susan L. Lukasik
Life of this patent
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Abstract
A method for detecting unauthorized use of a communication unit (102) in a secure wireless communication system includes monitoring (201) a wireless communication channel (103) presently supporting a secure communication. It is determined (202) whether the secure communication is encrypted with active system encryption parameters. When the secure communication is not encrypted with the active system encryption parameters, a communication unit (102) involved in the secure communication is indicated (203) as a potential unauthorized communication unit (102). The steps of monitoring, determining, and indicating are performed by a communication unit (102) or a central controller (101).
Claims26
A method for detecting unauthorized use of a communication unit in a secure wireless communication system, comprising the steps of:
- a) monitoring a wireless communication channel presently supporting a secure communication;
- b) determining whether the secure communication is encrypted with active system encryption parameters;
- and
- c) when the secure communication is not encrypted with the active system encryption parameters, indicating that a communication unit involved in the secure communication is a potential unauthorized communication unit.
A method for detecting unauthorized use of a communication unit in a secure wireless communication system, comprising the steps of:
- a) monitoring a wireless communication channel presently supporting a secure communication;
- b) determining whether the secure communication is encrypted with active system encryption parameters;
- c) when the secure communication is not encrypted with the active system encryption parameters, indicating that a communication unit involved in the secure communication is a potential unauthorized communication unit;
- and
- d) sending, to the potential unauthorized communication unit, a message encoded with the active system parameters to check if the potential unauthorized communication unit decodes the message properly.
A method for detecting unauthorized use of a communication unit in a secure wireless communication system, the method comprising the steps of:
- a) monitoring a wireless communication channel currently supporting a secure communication;
- b) determining whether the secure communication is encrypted with an inactive system encryption parameter;
- and
- c) indicating that a communication unit involved in the secure communication is a potential unauthorized communication unit.
A method for detecting unauthorized use of a communication unit in a secure wireless communication system, the method comprising the steps of:
- a) monitoring a wireless communication channel currently supporting a secure communication;
- b) determining whether the secure communication is encrypted with an inactive system encryption parameter;
- c) indicating that a communication unit involved in the secure communication is a potential unauthorized communication unit;
- and
- d) sending, to the potential unauthorized communication unit, a message encoded with active system parameters to check if the potential unauthorized communication unit decodes the message properly.
A secure communication monitor comprising:
- a wireless receiver that monitors a wireless communication channel currently supporting a secure communication;
- a database containing active system encryption parameters and previously used system encryption parameters;
- and
- a processing unit, operating together with the wireless receiver and the database, wherein the processing unit determines whether the secure communication unit is utilizing the active system encryption parameters.
Dependencies are inferred from the claim text.