Study And Improve On HMIPv6 Protocol

IETF has brought Hierarchical Mobile IPv6 technology (HMIPv6) , which divides the whole network into many layers by importing Mobile Anchor Point(MAP)o This division make mobile into two types-Macro Mobility and Micro Mobility. When the mobile node happens Micro Mobility in a MAP, It has no longer to send the address binding messages to Home Agent and Correspond node, which reduces the registration messages sending and the delay of switching . Thereby, Improving the communication quality of MIPv6.At the basis of analysing HMIPv6, The text mainly points out several defects in the HMIPv6. such as: Selection problem of MAP, overweight burden of MAP, the Route optimization problem, point to these defects, the text have brought two kinds of resolution schemes: (1) Extend the MAP foudation protocol of HMIPv6. Through union Mobility Node self's moving characteristic property, MAP factor and sepcial MAP choose algorithm, comes to choose MAP which is fit for Mobile Node, ultimately making Mobile Node utmost do Micro Mobility and reduce the transmission delay. (2) Introduce The Border GateWay sharing in the MAP transmission messages, Through sending the address binding message of Mobile Node to Border GateWay, the Border GateWay can directly send the messages to Mobile Node, which resolves the overweight burden problem of MAP, realize the Route Optimization , and finally the text provides two schemes realization under Linux.