TECHNIQUES FOR PERFORMING UMTS-AUTHENTICATION USING SIP (SESSION INITIATION PROTOCOL) MESSAGES

摘要

A technique for authenticating a user to a server using SIP messages include s forwarding an SIP request from the user agent to the server. The server then forwards a request for authentication to the user agent in response to the invite request, the request for authentication including information that th e authentication will be performed using a UMTS AKA mechanism. The user agent then forwards and authentication response to the server in accordance with t he UMTS AKA mechanism and the server then performs the appropriate actions to perform an invoked SIP procedure in response to the SIP request. The SIP request may include any standardized SIP request including an SIP INVITE request or an SIP REGISTER request. The request for authentication may inclu de one of an SIP 401 Unauthorized code or an SIP 407 Proxy Authentication Required code. The request for authentication should include UMTS AKA RAND a nd AUTN vectors, which may be included in an SIP WWW-Authenticate or Proxy- Authenticate response header field. The authentication response should inclu de one of either a UMTS AKA RES code or an AUTS code or an error code.