Patent ID: 7461248
Filing Date: 2008-12-02
Classification: H04L,H04Q,H04W

Abstract:
1. A method, comprising: detecting a roaming of the mobile terminal; identifying a combination of network elements involved in the detected roaming; selecting one of a plurality of authentication and authorization procedures to be performed based on the identified combination, wherein a home network has an authentication and authorization home server, wherein a foreign network has a plurality of domains each of which comprises at least one local server configured to authenticate, authorize, and account, and wherein each of the local servers is operationally connected to at least one network access server configured to handle access for mobile terminals roaming to or in the foreign network; and performing an authentication and authorization based on the selected one of a plurality of authentication and authorization procedures, wherein the method, upon attaching of the mobile terminal to the foreign network, further comprises wherein the performing reuses the allocated local security information to authenticate and authorize in each of said plurality of domains.