一种4G网络中实现WLAN漫游限制的系统及方法

A kind of system and method for implementing WLAN roaming restrict in 4G network

Non 3rd Generation Partnership Project(Non-3GPP)网络(如WLAN)可以通过授信或者非授信的方式接入到EPC网络中,但接入后如何实现用户在Non-3GPP内的漫游限制,3GPP标准并没有定义。本文首先概述了3GPP定义的Non-3GPP接入Evolved Packet Core(EPC)的两种模式和参考架构,接着介绍了Non-3GPP采用非授信模式接入EPC时的流程和基本原理,然后在此基础上,提出了一种通过3GPP AAA服务器实现用户在Non-3GPP漫游限制的系统和方法,并实验室验证了方法的可行性。

Non 3 rd Generation Partnership Project（ Non-3 GPP） access networks（ such as WLAN） can be connected to EPC network by trusted or untrusted mode according to 3 GPP specifications. But how to control roaming in the Non-3 GPP access network,3 GPP specification does not define it. First,this paper provided an overview of reference architecture and two kinds of mode for Non-3 GPP access network connected to Evolved Packet Core（ EPC）. Second,it introduced the process flow and the basic principles of Non-3 GPP access network connected to EPC network based on untrusted mode. Then on this basis,it proposed a system and method for implementing user roaming restriction in the Non-3 GPP access network through the 3 GPP AAA server and gave feasibility result under laboratory conditions.