Patent ID: 9392435
Filing Date: 2016-07-12
CPC Classification: H04L,H04W

Claim Text:
1. A method for accessing a visited network, comprising: receiving, by an authentication, authorization and accounting (AAA) server device, an access request initiated by a user for selecting the visited network, wherein the access request comprises an identifier of the visited network; detecting, by the AAA server device, whether the visited network selected by the user has changed according to the identifier of the visited network; if the visited network selected by the user has changed, initiating, by the AAA server device, a request for obtaining authentication and/or authorization information of the user from a home subscriber server (HSS), and requesting the HSS to check whether the user is authorized to access the visited network according to a list of authorized visited networks stored in the HSS; and receiving, by the AAA server device, a response from the HSS, wherein the response comprises a result of checking whether the user is authorized to access the visited network.