Huawei Technologies Co., Limited

Chengzhen Sun

Wenlin Zhang

Hai Bo Zhang

Peng Zhang

Lei Zhang

Xiaoqin Duan

Huadong Hu

The present application relates to a user accessing to a visited network in a wireless telecommunication network. After receiving an access request from the user for selecting a visited network and detecting the visited network selected by the user has changed, an AAA server device initiates a request for obtaining authentication and/or authorization information of the user from a HSS. In the process of obtaining the authentication and/or authorization information, the HSS checks whether the user is authorized to access to the visited network according to a list of authorized visited networks stored in the HSS.

Method, system and apparatus for accessing a visited network

The embodiments of the present invention disclose a method for accessing a visited network. The method includes: a user selects a visited network and initiates an access request to a user information application apparatus; when the user information application apparatus detects that the visited network has changed, it obtains a list of authorized visited networks from a user information storage apparatus and checks whether the user is authorized to access the visited network; or the user information storage apparatus checks whether the user is authorized to access the visited network; if the user is authorized to access the visited network, the user information application apparatus returns an access accept response to the user, allowing the user to access the visited network. The embodiments of the present invention also disclose systems and apparatuses for accessing a visited network. The embodiments of the present invention make it possible to accurately check whether the user is authorized to access a visited network.

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Shenzhen, China

Chengzhen Sun