IPv6的宏、微移动协议的性能及最优区域大小的求解  

Performance of IPv6’s Macro/Micro-Mobility Protocols and the Solution of Optimal Region Size

作　　者：王胜灵[1] 侯义斌[2] 黄建辉[1] 黄樟钦[2] 

机构地区：[1]西安交通大学电子与信息工程学院,西安710049 [2]北京工业大学软件学院,北京100022

出　　处：《西安交通大学学报》2005年第6期603-606,655,共5页Journal of Xi'an Jiaotong University

摘　　要：通过研究IPv6的宏移动协议(MAMP)与微移动协议(MIMP)的性能,定量地指出了只有当区域大小增至某一程度时,MIMP才能比MAMP取得更好的注册性能,而MIMP比MAMP多付出的分组传输代价与区域大小密切相关并随其增加而增加.定义总代价函数为MIMP相对MAMP所获得的平均注册性能收益与多付出的平均分组传输代价之和,提出了最优区域大小的求解算法.所求的最优区域大小可使总代价函数最小,从而使MIMP以尽可能低的分组传输代价获得尽可能高的注册性能收益.分析指出:当移动主机(MH)在接入路由器的平均驻留时间以及MH的平均分组到达率增加时,总代价值增大而最优区域大小减小;当MH的当前网络和家乡网络的距离增大时,总代价值减小.Through performance comparison between macro-mobility protocols and mirco-mobility protocols, it is qualitatively pointed that only when region size increases to some degrees, the latter can get better registration performance profits than the former, but it must pay extra packet transmission costs, which increase with the increase of region size. The total cost function was defined as the sum of the obtained average registration performance profits and the paid extra average costs for packet transmission of the micro-mobility protocols relative to the macro-mobility. After that, an algorithm was presented to find the optimal region size minimizing the total cost function, which enables micro-mobility protocols to obtain higher gains with lower costs. Analyses show that when accessing router, the mobile host (MH)'s average residence time and its average packet arrival rate decrease, the total cost value decreases and the optimal region size increases; when the distance between MH's current network and home network decreases, the total cost value increases.

关 键 词：宏移动协议 微移动协议 总代价函数 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]