关键词: 代价函数, 区域移动代理, 网络负载平衡, 微移动管理方案

Abstract: Many of current Micro-mobility Management schemes adopt the hierarchical principle，deploying a Foreign Management Agent（FMA） as regional agent outside the sub-region.Mobile HOST（MH） only need to register at FMAs when moving，which is transparent to Home Agent（HA）.In order to fix the defect of FMA’s overload causing by too many MHs，a Load-Balancing Distributed Dynamic Micro-mobility Management scheme is put forward.In this scheme，several regional mobile agents are put into the network，in order to realize the Distributed Intra-Domain Host Management.Moreover，an arithmetic which dynamically selects regional mobile agents according to network’s load is put forward and it avoids the problem of FMA’s overload when there are too many MHs in the traditional protocol effectively，without any compulsory requirements for network topology structure and the location of regional mobile agents.Analysis and emulation show that the condition of load balancing is improved when the amount of hosts increases quickly.

Key words: cost function, regional mobility Agent, the balance of network load, micro-mobility management