Method of preventing unauthorized access to a wireless communication system

• US 5,440,758 A
• Filed: 04/12/1994
• Issued: 08/08/1995
• Est. Priority Date: 04/12/1994
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Markison, Timothy W., Grube, Gary W.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): FAILE, ANDREW I
• Application Number:
  US08/226,537
• Time in Patent Office: 483 Days
• Field of Search: 455/15, 455/17, 455/26.1, 455/34.1, 455/34.2, 455/53.1, 455/54.1, 455/54.2, 455/56.1, 455/9, 340/825.31, 340/825.34, 379/59, 379/63, 379/95
• US Class Current: 455/9
• CPC Class Codes: H04B 7/00 Radio transmission systems, i.e. using radiation field H04B10/00, H04B15/00 take precedence
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 8/265 for initial activation of new user

Abstract

In a wireless communication system, unauthorized access may be prevented upon detecting the particular type of identification code. When the identification code is of a default enabled type, the central controller (101) transmits a default enabled message to the system manager (110). The system manager interprets this message and provides a response to the central controller (101). The response may indicate that this particular identification code should be activated or deactivated.

Claims

1. In a wireless communication system, a method for preventing unauthorized access to the wireless communication system, the method comprising the steps of:

a) during initialization or re-initialization of the wireless communication system, enabling available identification codes as default enabled identification codes;

b) after initialization or re-initialization of the wireless communication system, activating at least one of the available identification codes corresponding to at least one particular communication unit to produce activated identification codes;

during operation of the wireless communication system;

c) receiving a system access request from a requesting communication unit, wherein the system access request includes an identification code of the requesting communication unit;

d) determining whether the identification code is one of the activated identification codes or one of the default enabled identification codes; and

e) when the identification code is one of the default enabled identification codes, generating a default enabled message.

2. The method of claim 1 further comprising the steps of:

f) routing the default enabled message to a system manager terminal; and

g) upon input from the system manager terminal, processing a response to the default enabled message.

3. The method of claim 2, wherein step (g) further comprises disabling the identification code.

4. The method of claim 2, wherein step (g) further comprises activating the identification code.

5. In a wireless communication system, a method for preventing unauthorized access to the wireless communication system, the method comprising the steps of:

a) receiving a system access request from a requesting communication unit, wherein the system access request includes an identification code of the requesting communication unit;

b) determining whether the identification code is in a set of activated identification codes or a set of default enabled identification codes;

c) when the identification code is in the set of default enabled identification codes, determining whether the identification code is in a first set of identification codes; and

d) when the identification code is in the first set of identification codes, disabling the identification code.

6. The method of claim 5 further comprising the step of:

e) informing a system manager terminal of the disabling of the identification code.

7. The method of claim 6 further comprising the step of:

f) upon input from a system manager, activating the identification code.

8. The method of claim 5, wherein step (d) further comprises the step of:

d1) when the identification code is not in the first set of identification codes, generating a default enable message.

9. The method of claim 8 further comprising the steps of:

e) routing the default enabled message to a system manager terminal; and

f) upon input from a system manager, processing a response to the default enabled message.

10. The method of claim 9, wherein step (f) further comprises the step of:

f1) disabling the identification code.

11. The method of claim 9, wherein step (f) further comprises the step of:

f1) activating the identification code.