Research On PING-PONG Movement Handover In IPv6

The integration technology for mobile communication technologies and wireless network Peopleto visit internet at any time by mobile terminals and realized dynamic link between mobile terminals and Internet,and achieved to maintain a seamless connection with the Internet without reconfiguration network terminals,even without disruPtion of the network conversation.The mobile IPv6 Protoeol,based on IPv6,has Provided the suPPort for those mobile network usersTtherefor the research on the key technology of mobile IPv6 is of great practical significance.Recently,The reseacrhes on the key technology of mobile IPv6 mainly focus on how to guarantee the communication continuity,how to assuer smooth handoff,how to guarantee the date security and how to Provide the QoS udring MIP handoff Poreess and so on.The research importance is that the problems of Process that mobile node still maintains its connectivity when moved from one access router(AR) to another access router called handover. Handover technology is the most important element for the quality of serviee(QoS) and the key technology of mobile IPv6. Nowadays,there have been many types of handover technologies,the current representative handeoff technologies has mobile IPv6(MIPv6),Fast handover technology(FMIPv6),Hierarehieal mobile IPv6(HMIPv6), Hierarehieal fast mobile IPv6(FHMIPv6)and so on. However, the existing mobile IPv6 handover technologies have some disadvantage, such as long handover latency, high Packetloss rate,so it is difficultn to meet the real-time applications which sensitive to time delay.Especially there quirements of handoff mobile node in Ping-pong movement. In order to improve handover Performance and reduce handover delay and Packetloss especially in Ping-pong movement, this Paper has done some research. Analyse and research the existing handover technologies,then introduce representative handeoff technologies MIPv6,FMIPv6,HMIPv6,FHMIPv6.And give some comparison and evaluation on the of those handover technologies,so handover of mobileIPv6 in Ping-pong movement do.Finding those handover technologies have its advantage but they do not satisfied the performance in Ping-pong movement. This Paper give a new handover technologies in Ping-pong movement. Based on FMIPv6 and FHMIPv6, cache tunnelling status table,which have the IP adress and builded tunnelling.we can change the tunnelling status, avioding that the resource is wasted.At the same time,we also add the timer.Then we introduce detailly how the better technologies do. In this better technologies By theoretical analysis and simulation analysis under NS-2 environment,it is proved that the optimization scheme real holds the advantage of low lateney and Low Paeketloss rate,and has improved MN handover Performanee in Ping-pong movement.