移动网络中新型分层AAA的移动部署方案

摘要

针对移动网络的切换过程中引入认证而带来的过大时延等问题进行研究,提出一种增强型的分层AAA移动性管理架构,通过设置主AAA服务器内从AAA服务器的最优管理层数来降低总体系统开销.为解决移动节点在相邻区域之间频繁移动而引起的过大开销问题,提出动态部署方法.仿真结果证明,采用该分层AAA的移动性部署方案使系统总开销得到极大改善.%This paper focuses on the decrease of longer latency caused by considering the users' authentication during the handover process in mobile networks. An Enhanced Hierarchical AAA Mobility Management(E-HAMM) architecture is proposed, in which the system cost can be reduced obviously by configuring an optimal management layers of Lower AAA Server(L-AAAS) in Superior AAA Server(S-AAAS) domain. A Dynamic Deployment Method(DDM) is brought forward to deal with the higher cost when Mobile Nodes(MN) frequently moving between neighboring S-AAAS domains. By using of the mobility deployment scheme, the performance analysis proves that the total cost is reduced drastically.