| The swift development of IP and mobile communication technologies and the widely use of high performance notepads and PDA terminals have provided necessary terms, for the development of mobile Internet technology. The research on MIP technology has become the hot spot. Mobile IP mechanism can provide a mobile data solution on the global Internet. With this mechanism, the mobile node can connect to whatever links with a permanent IP address. Now, the research points mainly focus on how to guarantee communication continuity during MIP handover process, how to reduce the handover delay and how to assure the smooth handover and QoS.In this paper, firstly we describe the concepts and processes of mobile IPv4 and mobile IPv6 respectively, then point out that mobile IPv6 may be an ideal way to realize the future mobile society. Based on the theories above, we discuss several popular handover technologies extending the standard mobile IPv6, such as fast handover, HMIPv6 and fast handover using HMIPv6. In the basis of analysis, we introduce a novel handover architecture, FHMIPv6. This architecture builds on top of the hierarchical approach and the fast handover mechanism, in conjunction with a newly developed handover algorithm based on pure software-based movement tracking techniques. Finally we make emulation with OMNET++, analysis the results, and give some optimization for FHMIPv6. |
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