Method for reprogramming duplicated communication units

• US 5,483,465 A
• Filed: 10/28/1993
• Issued: 01/09/1996
• Est. Priority Date: 02/26/1993
• Status: Expired due to Fees

• Current Assignee: Himont, Inc (Government of France), Motorola, Inc. (Motorola Solutions, Inc.), Akzo Nobel N.V. (Nouryon BV)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Markison, Timothy W., Grube, Gary W., Weston, Thomas E.
• Primary Examiner(s): Cosimano, Edward R.
• Assistant Examiner(s): Shah, Kamini S.
• Application Number:
  US08/144,599
• Time in Patent Office: 803 Days
• Field of Search: 455/54.1, 455/49.1, 455/33.1, 455/33.2, 455/186.1, 379/59, 379/60, 379/94, 340/825.34, 364/514
• US Class Current: 340/7.41
• CPC Class Codes: H04W 12/126 Anti-theft arrangements, e.g. protection against subscriber identity module [SIM] cloning

Abstract

A monitoring computer (115) monitors a communication resource within a wireless communication system for transmissions by communication units. Upon detecting transmissions, which contains a communication unit personality code, the monitoring computer compares transmission time and location information, stored in a database (117), for the communication unit to determine if multiple communication units are using the same communication unit personality code. If multiple communication units are detected, the monitoring computer reprograms at least a portion of service access information of the communication units. In this manner, discrepancies in communication unit programming may be detected and corrected.

Claims

1. In a wireless communication system, a method for reprogramming a communication unit, the method comprising the steps of:

a) monitoring, by a monitoring computer, a communication resource for transmissions of a communication unit personality code;

b) for at least two detections of the communication unit personality code, determining, by the monitoring computer, transmission times and locations of transmitting communication units that transmitted the communication unit personality code;

c) determining, by the monitoring computer, that the transmitting communication units that originated the at least two detections of the communication unit personality code are duplicated communication units based on the transmission times and the locations of the transmitting communication units; and

d) when it is determined that the transmitting communication units are duplicated communication units, reprogramming, by the monitoring computer, the transmitting communication units via a communication resource.

2. In the method of claim 1, step (a) further comprises the step of monitoring for transmissions of the communication unit personality code, wherein the communication unit personality code comprises at least one of a communication unit identification code, a hardware identification code, or a software application identification code.

3. In the method of claim 1, step (a) further comprises the step of monitoring for transmissions of the communication unit personality code, wherein the communication unit personality code comprises a combination of a communication unit identification code, a hardware identification code, and a software application identification code.

4. In the method of claim 1, step (c) further comprises the steps of:

c1) computing a transmission time difference between the transmission times of the transmitting communication units and a location difference between the locations of the transmitting communication units;

c2) comparing the transmission time difference and the location difference with a transmission time threshold and a location threshold, respectively; and

c3) when the transmission time difference is less than the transmission time threshold and the location difference is greater than the location threshold, determining that the transmitting communication units are duplicated communication units.

5. In the method of claim 1, step (d) further comprises the step of reprogramming at least a portion of access information stored in the transmitting communication units such that the transmitting communication units are prohibited from accessing the wireless communication system.

6. In the method of claim 1, step (d) further comprises the step of reprogramming access information contained in the transmitting communication units such that the access information matches service access information stored in the monitoring computer.

7. In the method of claim 1, step (d) further comprises the step of reprogramming at least a portion of access information stored in the transmitting communication units such that the transmitting communication units can transmit only default service requests.

8. In the method of claim 1, step (d) further comprises the step of reprogramming at least a portion of access information stored in the transmitting communication units to affiliate the transmitting communication units with a default communication group or a default communication system.

9. In a wireless communication system a method for reprogramming a communication unit, the method comprising the steps of:

a) transmitting, by a monitoring computer via a communication resource, a request for a communication unit personality code of the communication unit;

b) upon receipt of the communication unit personality code, comparing, by the monitoring computer, the communication unit personality code with stored service access information;

c) when the communication unit personality code is not representative of the stored service access information, sending, by the monitoring computer to the communication unit, reprogramming information; and

d) overwriting, by the communication unit, at least a portion of service access information with the reprogramming information.

10. A method for reprogramming a communication unit, the method comprising the steps of:

a) monitoring, by a monitoring computer, a communication resource for transmission of a communication unit personality code;

b) determining, by the monitoring computer, a number of transmissions of the communication unit personality code during a predetermined period of time; and

c) when the number of transmissions of the communication unit personality code exceeds a predetermined number of transmissions, reprogramming communication units that transmitted the communication unit personality code.

11. A method for a communication unit to have access privileges to a wireless communication system be reprogrammed, the method comprising the steps of:

a) transmitting a communication unit personality code;

b) receiving reprogramming information from a monitoring computer over a communication resource of the wireless communication system when the monitoring computer has determined that the communication unit is a duplicated communication unit; and

c) overwriting at least a portion of service access information with the reprogramming information such that the communication unit is prohibited from future transmissions of the communication unit personality code.

12. A method for reprogramming a communication unit, the method comprising the steps of:

a) monitoring, by a monitoring computer, a communication resource for transmission of a communication unit personality code;

b) determining, by the monitoring computer, a first communication unit identification code and a first software application code of a first communication unit that transmitted the communication unit personality code, and a second communication unit identification code and a second software application code of a second communication unit that transmitted the communication unit personality code;

c) comparing, by the monitoring computer, the first and second communication unit identification codes and the first and second software application codes;

d) when the first and second software application codes are substantially identical and the first and second communication unit identification codes are not substantially identical, sending, by the monitoring computer to the first communication unit and the second communication unit, reprogramming information; and

e) overwriting, by the first communication unit and the second communication unit, at least a portion of service access information with the reprogramming information.