Mobile IP的几种切换策略  

Handoff Schemes in Mobile IP

作　　者：刘雨[1] 杨炳丰[2] 张惠民[1] 叶敏华[1] 

机构地区：[1]北京邮电大学信息工程学院,北京100876 [2]上海市电信公司,上海200085

出　　处：《重庆邮电学院学报（自然科学版）》2002年第2期1-4,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目 (批准号 6 0 0 72 0 36 )

摘　　要：Mobile IP在 IP层提供移动支持 ,移动主机可以从一个地方移动到另一个地方而不中断已有的连接。在 Mobile IP切换过程中 ,可能会丢失一些包 ,使得上层协议如 TCP和 U DP的性能下降。为此 ,提出了多种切换策略。介绍了其中的几种 ,并提出了改进的方案 :采用预先建立的隧道来降低切换时延 ,应用本地广播和 FA处的缓存来减少丢包 ,利用提前的资源预留来保证 Qo S。Mobile IP supports mobility in IP layer. Mobile host can move from one place to another without disrupting the existing connection. During the Mobile IP handoff, some packets will be lost, resulting in the performance degradation of the upper protocol, such as TCP or UDP. To mitigate this problem, in this paper, several handoff schemes are proposed, and some of them are introduced and analyzed in detail. Then the authors put forward their improved scheme, which uses the pre-set tunnel to decrease the handoff delay; and also uses local broadcast and buffer in FAs to decrease the packed loss, and utilizes the early resource reservation to guarantee the QoS.

关 键 词：本地注册 因特网 MOBILE IP 切换策略 

分 类 号：TN929.5[电子电信—通信与信息系统] TP393.4[电子电信—信息与通信工程]