Patent ID: 6285882
Filing Date: 2001-09-04
Classification: H04W

Abstract:
A method for reregistration of a subscriber unit in a global telecommunications network, comprising the steps of:(a) receiving an event requiring authentication;(b) determining if a threshold for subscriber verification has been reached;(c) requesting subscriber verification if the threshold has been reached; and(d) deregistering the subscriber if the subscriber is not verified; wherein the deregistering step (d) comprises: (d1) determining if the verification request timed-out; (d2) determining if an UpdateLocation message containing an Unknown Subscriber parameter is received in response to the verification request; (d3) sending a RegistrationCancellation message to a visited network's visited location register (VLR) if either the request timed-out or an UpdateLocation message containing an Unknown Subscriber parameter is received; and (d4) processing the event as normal if the Unknown Subscriber message is not received.