Patent ID: 6556820
Filing Date: 2003-04-29
Classification: H04W

Abstract:
A method for managing mobile terminals having multiple subscriptions in a mobile environment, comprising:allocating a Universal Mobile Telecommunications Standard (UMTS) subscriber identity module for each subscription associated with a mobile terminal, each UMTS subscriber identity module (USIM) being identified by an identification code (USIM-ID) and having a unique set of authentication parameters; performing a single mobility management procedure for multiple subscriptions, the single mobility management procedure being initiated by providing a single message and including a location area update procedure, the location area update procedure providing a single location area update request message; sending authentication parameters from a network to service providers; analyzing the authentication parameters to determine valid subscriptions for each UMTS subscriber identity module; providing authentication data from the service providers to the network, the authentication data being used by the network for authenticating each UMTS subscriber identity module; and sending a single authentication request to a mobile terminal, the single authentication request including authentication parameters for authentication of all UMTS subscriber identity modules identified by identification codes provided in the single location area update request message.