Method for terminating a wireless communication of a mobile communication unit

• US 5,826,186 A
• Filed: 10/25/1996
• Issued: 10/20/1998
• Est. Priority Date: 10/25/1996
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Mitchell, John, Houghton, Matthew A.
• Primary Examiner(s): LE, THANH C
• Application Number:
  US08/736,870
• Time in Patent Office: 725 Days
• Field of Search: 455/408, 455/410, 455/411, 455/422, 455/423, 455/424, 455/425, 455/433, 455/67.1, 455/507, 455/517, 455/524, 340/825.31, 340/825.34, 380/23
• US Class Current: 455/410
• CPC Class Codes: H04W 12/126 Anti-theft arrangements, e.g. protection against subscriber identity module [SIM] cloning
• CPC Class Codes: H04W 12/71 Hardware identity
• CPC Class Codes: H04W 12/79 Radio fingerprint

Abstract

The method operates in a system including a switching center, a base station responsive to the switching center and a mobile communication unit responsive to the base station, and includes receiving a first message from the mobile communication unit; in response to the first message, determining whether the mobile communication unit is fraudulent; based on the determination, receiving a second message at the switching center from a dedicated fraud indicator wireline connection; and in response to the second message, terminating the wireless communication of the mobile communication unit.

Claims

1. In a communication system comprising a first switching center, a second switching center responsive to the first switching center, a second base station responsive to the second switching center and a mobile communication unit responsive to the second base station, a method for terminating a wireless communication of the mobile communication unit, comprising the steps of:

providing a system for identifying a fraudulent mobile communication unit, the system comprising

a signal capture device in communication with the second base station,

an intelligent peripheral responsive to the signal capture device,

a service node responsive to the intelligent peripheral, and

a dedicated wireline connection coupling the service node and the first switching center;

receiving at the base station a first message from the mobile communication unit;

determining a radio frequency signal characteristic of the mobile communication unit by the signal capture device;

receiving the radio frequency signal characteristic by the intelligent peripheral;

determining whether the mobile communication unit is fraudulent;

based on the determination, receiving a second message at the first switching center from the dedicated wireline connection, the second message identifying the mobile communication unit as fraudulent;

in response to the second message, receiving a third message at the second switching center from the first switching center; and

in response to the third message, terminating the communication of the mobile unit by the base station.

2. The method according to claim 1, wherein the third message utilizes an International Standard 41 (IS-41) protocol.

3. In a communication system comprising a gateway switching center, a roamer switching center in communication with the gateway switching center, a roamer base station responsive to the roamer switching center and a mobile communication unit responsive to the roamer base station;

a method for terminating a wireless communication of the mobile communication unit, comprising the steps of;

providing a system for identifying a fraudulent mobile communication unit, the system comprising

a signal capture device in communication with the roamer base station,

a signal identifier device responsive to the signal capture device,

a service node having a controller and a switch, the controller responsive to the signal identifier device and in communication with the switch, and

a dedicated wireline connection coupling the switch and the gateway switching center;

receiving at the roamer base station a first message from the mobile communication unit;

determining a radio frequency signal characteristic of the mobile communication unit by the signal capture device;

receiving the radio frequency signal characteristic by the signal identifier device;

determining whether the mobile communication unit is fraudulent;

based on the determination, receiving a second message at the gateway switching center from the dedicated wireline connection identifying the mobile communication unit as fraudulent;

in response to the second message, receiving a third message at the roamer switching center from the gateway switching center; and

in response to the third message, terminating the communication of the mobile unit by the roamer base station.

4. The method according to claim 3, wherein the third message utilizes an IS-41 protocol.