基于Diameter的L2异构网络切换

4G系统由IP骨干网和各种无线接入网组成,不同接入网络并存使得具有多模配置的移动终端可以同时连接到多个物理网络。如何安全并无缝地接入IP骨干网成为MN在异构网络漫游中需要解决的首要问题。在分析了移动IP技术和移动以太网技术的基础上,提出了一种基于L2分层的安全的切换模型。把对MN的安全认证放在L2接入的第一时间进行,L3切换时无需进行安全认证,从而降低了L3切换的时延。

Diameter-based Layer 2 Heterogeneous Network Handover

Fourth Generation networks will be an all IP based network and composed of several radio technologiesoThe Co-existence of different access methods makes it possible for end systems with multiple interfaces to connect to several physical networks simultaneously. How to connect into Internet safely and seamlessly will be the most important problem while mobile nodes move across heterogeneous networks. A secure Layer 2 based handover architecture is presented upon the analysis of Mobile IP and Mobile Ethemet. The authentication of mobile node is processed in Layer 2 rather than in Layer 3 so that there is no need to authenticate the same node when L3 handover begins. It can reduce the L3 handover delay greatly.