Research And Realization Of WAPI Access IMS Network

As the system based on SIP, IMS provide a set of standard platform architecture for multimedia services. IMS is defined and improved by several international standard organization such as IETF, 3GPP and OMA, and has been regarded as the core of the next generation network. But because of the inherent limitation of IP protocol, IMS is not secure at all. IMS accepts multiple way of access, especially the WLAN. WAPI is new security architecture of WLAN, and it provides security for WLAN access network. So, the way WAPI access IMS network becomes an important research topic.This paper is studied on the above background. Firstly, it introduces the secure problem IMS may meet , IMS security architecture, and analyses 3GPP UMTS-WLAN security solution and Wireless Authentication Privacy Infrastructure (WAPI). And then, it provides a security strategy that WAPI access IMS network, and analyses the corresponding security theme and authentication procedure. At last, based on the demand of WAPI client based on IMS network, it designs the system frame and main function modules, and realizes the WAPI client which could access IMS network.The outcome of this thesis lays a good foundation for the research on the way WAPI client access IMS network.