Patent ID: 7171198

Claim:
A method for performing a network access sequence for a mobile node in one or more foreign domains, comprising the steps of: the one or more foreign domains sending service advertisement messages, each service advertisement message comprising an identifier of the service advertisement message in question, network address/identity information relating to the foreign domain in question, and a detailed service offering; the mobile node receiving and storing the detailed service offering and forming an indication of a selected detailed service offering; the mobile node sending a service request message to the foreign domain which sent the selected service offering, the service request message comprising the indication of the selected service offering and the mobile node's credentials, wherein the selected service offering is selected from the service advertisement messages sent by the one or more foreign domains; the foreign domain conveying the mobile node's credentials to the mobile node's home domain for authentication and authorization; the foreign domain checking if the selected service offering can be supported on the basis of available communication resources; and if the selected service offering can be supported, the foreign domain allocating communication resources for supporting the selected service offering and indicating to the mobile node the availability of a service according to the selected service offering.