Method and apparatus for establishing a communication link

• US 6,360,091 B1
• Filed: 08/02/1996
• Issued: 03/19/2002
• Est. Priority Date: 05/06/1994
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Schellinger, Michael J., DʼAvello, Robert F.
• Primary Examiner(s): CUMMING, WILLIAM D
• Application Number:
  US08/693,494
• Time in Patent Office: 2,055 Days
• Field of Search: 379/62, 379/60, 379/58, 379/57, 455/403
• US Class Current: 455/403
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys

Abstract

A method generally establishes a communication link in a communication system when a cordless base station has been authenticated to communicate with authorization equipment, and the authorization equipment has been authenticated to communicate with the cordless base station. Preferrably, one or more random numbers are transmitted between the cordless base station and the authorization and call routing equipment to establish the communication link.

Claims

1. A method for establishing a communication link between a cordless base station and authorization equipment, said cordless base station being coupled to a telephone network and being adapted to communicate with a wireless communication device, the method comprising the steps of:

(i) transmitting a connect message from said authorization equipment to said cordless base station, said connect message having a first random number;

(ii) generating an authentication message having an identification code associated with said cordless base station and a cordless base station authentication result in response to said connect message; and

(iii) transmitting said authentication message from said cordless base station to said authentication equipment.

3. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 1 further including a step of transmitting an authentication request from said cordless base station to said authorization equipment.

4. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 3 wherein said step of transmitting an authentication request comprises a step of transmitting a second random number from said cordless base station to said authentication equipment.

5. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 1 further including a step of generating an authorization equipment authentication result at said authorization equipment.

6. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 5 further including a step of transmitting said authorization equipment authentication result from said authorization equipment to said cordless base station.

2. A method for establishing a communication between a cordless base station and authorization equipment, said cordless base station being coupled to a telephone network and adapted to communicate with a wireless communication device, the method comprising the steps of:

(i) transmitting an authentication request having an identification code associated with said cordless base station and a random number generated at said cordless base station from said cordless base station to said authorization equipment;

(ii) generating an authenticate result in response to said authentication request;

(iii) transmitting said authentication result from said authorization equipment to said cordless base station.

7. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 2 further including a step of transmitting a connect message from said authorization equipment to said cordless base station, said connect message having a second random number before said step of transmitting an authentication request.

8. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 7 further including a step of generating a second authentication result in response to said connect message, said second authentication result having a format comprising:

an identification code uniquely associated with said cordless base station; and

a cordless base station authentication result.

9. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 8 further including a step of transmitting said second authentication result from said cordless base station to said authentication equipment.

10. A method for establishing a communication link between a cordless base station and authorization equipment, said cordless base station being coupled to a telephone network and being adapted to communicate with a wireless communication device, the method comprising the steps of:

transmitting a connect message from said authorization equipment to said cordless base station, said connect message having a first random number;

generating a first authentication result in response to said connect message, said first authentication result having a format comprising;

an identification code uniquely associated with said cordless base station; and

a cordless base station authentication result;

transmitting said first authentication result from said cordless base station to said authentication equipment;

transmitting an authentication request from said cordless base station to said authorization equipment, said authentication request comprising;

an identification code uniquely associated with said cordless base station;

a second random number generated at said cordless base station;

generating a second authentication result in response to said authentication request; and

transmitting said second authentication result from said authorization equipment to said cordless base station.

11. A method for establishing a communication link between a cordless base station and authorization equipment, said cordless base station being coupled to a telephone network and being adapted to communicate with a wireless communication device, the method comprising the steps of:

(i) transmitting a connect message from said authorization equipment to said cordless base station, said connect message having a first random number; and

(ii) receiving an authentication message having an identification code associated with said cordless base station and a cordless base station authentication result in response to said connect message.

12. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 11 further including a step of receiving an authentication request from said cordless base station.

13. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 12 wherein said step of receiving an authentication request comprises a step of receiving a second random number from said cordless base station.

14. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 11 further including a step of generating an authorization equipment authentication result.

15. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 14 further including a step of transmitting said authorization equipment authentication result from said authorization equipment to said cordless base station.

16. A method for establishing a communication between a cordless base station and authorization equipment, said cordless base station being coupled to a telephone network and adapted to communicate with a wireless communication device, the method comprising the steps of:

(i) transmitting an authentication request having an identification code associated with said cordless base station and a random number generated at said cordless base station from said cordless base station to said authorization equipment; and

(ii) receiving an authenticate result in response to said authentication request.

17. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 16 further including a step of receiving a connect message from said authorization equipment, said connect message having a second random number before said step of transmitting an authentication request.

18. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 17 further including a step of generating a second authentication result in response to said connect message, said second authentication result having a format comprising:

an identification code associated with said cordless base station; and

a cordless base station authentication result.

19. The method for establishing a communication link between a cordless base station and authorization equipment according to claim 18 further including a step of transmitting said second authentication result from said cordless base station to said authentication equipment.