×

Method and apparatus for authentication in a communication system

  • US 5,708,710 A
  • Filed: 06/23/1995
  • Issued: 01/13/1998
  • Est. Priority Date: 06/23/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of performing authentication in a communication system comprising the steps of:

  • detecting an unexpected authentication message, said unexpected authentication message including but not limited to at least one of the following;

    an unsolicited base station challenge message; and

    an unsolicited unique challenge response message;

    updating a counter value;

    comparing the counter value to a threshold value; and

    performing an encryption key update operation in response to the comparison between the counter value and the threshold value.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×