Research And Simulation On Handover For Mobile Ipv6

To resolve the problem of long handover delay and high packets loss in MIPv6,an informatioexchange-based fast handover scheme for Hiera rchical Mobile IPv6 (NF-HMIPv6) was proposed. With information exchange, mobile node foreknows the neighboring relationship among access routers and their related information. After combining FMIPv6 and HMIPv6, the operation in anticipation phase was simplified by adjusting signaling flow of FMIPv6 over HMIPv6. Furthermore, NF-HMIPv6 sets a tunnel timer for reserving the tunnel established in the previous network. The results show that NF-HMIPv6 can reduce the time of radio access network discovery and candidate access router discovery,the total handover delay and packets loss,and large signaling cost introduced by mobile node's ping-pong movement. The performance of NF-HMIPv6 handover is excellent.