Method for detecting unauthorized modification of a communication or broadcast unit

• US 5,469,569 A
• Filed: 08/13/1993
• Issued: 11/21/1995
• Est. Priority Date: 02/26/1993
• Status: Expired due to Term

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Markison, Timothy W., Grube, Gary W.
• Primary Examiner(s): Coleman, Eric
• Application Number:
  US08/106,020
• Time in Patent Office: 830 Days
• Field of Search: 395/800, 395/600, 395/575, 364/403, 380/4, 380/25, 379/58
• US Class Current: 1/1
• CPC Class Codes: G06F 11/006 Identification G06F11/2289 takes precedence
• CPC Class Codes: G06F 21/12 Protecting executable software
• CPC Class Codes: G06F 21/31 User authentication
• CPC Class Codes: G06F 21/552 involving long-term monitoring or reporting
• CPC Class Codes: G06F 2221/2111 Location-sensitive, e.g. geographical location, GPS
• CPC Class Codes: G06F 2221/2129 Authenticate client device independently of the user
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders
• CPC Class Codes: H04W 12/12 Detection or prevention of fraud

Abstract

A database unit monitors the communications occurring within at least one communication system for a change status indicator of communication or broadcast units. Upon receiving the change status indicator, the database unit compares the one received with a stored change status indicator for the unit. When the stored change status indicator does not match the one received, the database unit indicates that the unit has undergone an unauthorized modification.

Claims

1. In a communication system that includes a plurality of communication units and at least one radio frequency communication resource, a method of detecting an unauthorized modification of a communication unit of the plurality of communication units, the method comprises the steps of:

a) transmitting, by the communication unit via the radio frequency communication resource, at a predetermined time interval, a message, wherein the message comprises a communication unit ID and a software change status indicator;

b) receiving, by a receiver via the radio frequency communication resource, the message, thus forming a received message;

c) transporting, by the receiver, the received message to a database unit;

d) accessing, by the database unit, a stored software change status indicator based on the communication unit ID;

e) comparing, by the database unit, the software change status indicator with the stored software change status indicator; and

f) when the software change status indicator and the stored software change status indicator do not substantially match, indicating, by the database unit, that an unauthorized modification to the communication unit occurred.

2. In the method of claim 1, the software change status indicator of step (a) further comprises, incrementing a count of the number of modifications that has occurred to the communication unit.

3. In the method of claim 1, the software change status indicator of step (a) further comprises, indicating that a modification has occurred to the communication unit.

4. The method of claim 1 further comprises the step of:

g) when the unauthorized modification to the communication unit has occurred, generating, by the database unit, a report indicating the unauthorized modification has occurred to the communication unit.

5. The method of claim 1 further comprises the step of:

g) resetting, by the database unit, the stored software change status indicator.

14. The method of claim 3 further comprises the step of:

h) when the unauthorized modification to the base station has occurred, generating, by the database unit, a report indicating the unauthorized modification has occurred to the base station.

6. In a communication system that includes at least one base station and at least one radio frequency communication resource, a method of detecting an unauthorized modification of a base station, the method comprises the steps of:

a) transmitting, by the base station via the radio frequency communication resource, at a predetermined time interval, a message, wherein the message comprises a base station ID and a software change status indicator;

b) receiving, by a receiver via the radio frequency communication resource, the message, thus forming a received message;

c) transporting, by the receiver, the received message to a database unit;

d) accessing, by the database unit, a stored software change status indicator based on the base station ID;

e) comparing, by the database unit, the software change status indicator with the stored software change status indicator; and

f) when the software change status indicator and the stored software change status indicator do not substantially match, indicating, by the database unit, that an unauthorized modification to the base station occurred.

7. In the method of claim 6, the software change status indicator of step (a) further comprises, incrementing a count of the number of modifications that has occurred to the base station.

8. In the method of claim 6, the software change status indicator of step (a) further comprises, indicating that a modification has occurred to the base station.

9. The method of claim 6 further comprises the step of:

g) when the unauthorized modification to the base station has occurred, generating, by the database unit, a report indicating the unauthorized modification has occurred to the base station.

10. The method of claim 6 further comprises the step of:

g) resetting, by the database unit, the stored software change status indicator.

11. In a communication system that includes a plurality of communication units and at least one radio frequency communication resource, a method of detecting an unauthorized modification of a communication unit of the plurality of communication units, the method comprises the steps of:

a) determining, by the communication unit, that a modification has occurred to the communication unit;

b) when the modification has occurred to the communication unit, transmitting, by the communication unit via the radio frequency communication resource, a message, wherein the message comprises a communication unit ID and a software change status indicator;

b) receiving, by a receiver via the radio frequency communication resource, the message, thus forming a received message;

c) transporting, by the receiver, the received message to a database unit;

d) accessing, by the database unit, a stored software change status indicator based on the communication unit ID;

e) comparing, by the database unit, the software change status indicator with the stored software change status indicator; and

f) when the software change status indicator and the stored software change status indicator do not substantially match, indicating, by the database unit, that an unauthorized modification to the communication unit occurred.

12. The method of claim 11 further comprises the step of:

h) when the unauthorized modification to the communication unit has occurred, generating, by the database unit, a report indicating the unauthorized modification has occurred to the communication unit.

13. In a communication system that includes at least one base station and at least one radio frequency communication resource, a method of detecting an unauthorized modification of a base station, the method comprises the steps of:

a) determining, by the base station, that a modification has occurred to the base station;

b) when the modification has occurred to the base station, transmitting, by the base station via the radio frequency communication resource, a message, wherein the message comprises a base station ID and a software change status indicator;

b) receiving, by a receiver via the radio frequency communication resource, the message, thus forming a received message;

c) transporting, by the receiver, the received message to a database unit;

d) accessing, by the database unit, a stored software change status indicator based on the base station ID;

e) comparing, by the database unit, the software change status indicator with the stored software change status indicator; and

f) when the software change status indicator and the stored software change status indicator do not substantially match, indicating, by the database unit, that an unauthorized modification to the base station occurred.

15. In a communication system that includes a plurality of communication units and at least one radio frequency communication resource, a method of detecting an unauthorized modification of a communication unit of the plurality of communication units, the method comprises the steps of:

a) transmitting, by the communication unit via the radio frequency communication resource, a message, wherein the message comprises a communication unit ID, a resource request and a software change status indicator;

b) receiving, by a receiver via the radio frequency communication resource, the message, thus forming a received message;

c) transporting, by the receiver, the received message to a database unit;

d) accessing, by the database unit, a stored software change status indicator based on the communication unit ID;

e) comparing, by the database unit, the software change status indicator with the stored software change status indicator; and

f) when the software change status indicator and the stored software change status indicator do not substantially match, indicating, by the database unit, that an unauthorized modification to the communication unit occurred.

16. The method of claim 15 further comprises the step of:

g) when the unauthorized modification to the communication unit has occurred, generating, by the database unit, a report indicating the unauthorized modification has occurred to the communication unit.

17. In a communication system that includes at least one base station and at least one radio frequency communication resource, a method of detecting an unauthorized modification of a base station, the method comprises the steps of:

a) transmitting, by the base station via the radio frequency communication resource, a message, wherein the message comprises a base station ID, a resource request and a software change status indicator;

b) receiving, by a receiver via the radio frequency communication resource, the message, thus forming a received message;

c) transporting, by the receiver, the received message to a database unit;

d) accessing, by the database unit, a stored software change status indicator based on the base station ID;

e) comparing, by the database unit, the software change status indicator with the stored software change status indicator; and

f) when the software change status indicator and the stored software change status indicator do not substantially match, indicating, by the database unit, that an unauthorized modification to the base station occurred.

18. The method of claim 17 further comprises the step of:

g) when the unauthorized modification to the base station has occurred, generating, by the database unit, a report indicating the unauthorized modification has occurred to the base station.