Route maintenance of on-demand routing protocol in mobile ad hoc networks  

作　　者：肖百龙 Guo Wei Liu Jun Zhu Silu 

机构地区：[1]National Key Laboratory of Communication, School of Communication and Information Engineering,University of Electronic Science and Technology of China, Chengdu 610054, P.R. China [2]College of Statistics, Hunan University, Changsha 411X）79, P.R. China]

出　　处：《High Technology Letters》2008年第2期174-178,共5页高技术通讯（英文版）

基　　金：the National High Technology Research and Development Progamme of China(No2005AA123820);the National Natural Science Foundation of China(No60472052 and No10577007)

摘　　要：In mobile ad hoc networks （MANETs）, if a mnltihop route breaks, route maintenance is typically performed to establish a new route which causes high control overhead and long packet delay. To decrease the time of recovery and the overhead of maintenance, a new route maintenance mechanism in which the maintenance is confined to the vicinity of the broken link is proposed. This mechanism patches broken route through some other nodes in which only nodes near the broken link（s） may need to be substituted and the rest of nodes can be retained on the route. The broken link can be repaired without considering its relative position in the whole path, so the abihty of dealing with hnk failure is improved obviously. Simulation results show that the proposed strategy improves network performance significantly, such as in merits of control overhead and packet delay.In mobile ad hoc networks(MANETs),if a muhihop route breaks,route maintenance is typicallyperformed to establish a new route which causes high control overhead and long packet delay.To decreasethe time of recovery and the overhead of maintenance,a new route maintenance mechanism in which themaintenance is confined to the vicinity of the broken link is proposed.This mechanism patches brokenroute through some other nodes in which only nodes near the broken link(s)may need to be substitutedand the rest of nodes can be retained on the route.The broken link can be repaired without consideringits relative position in the whole path,so the ability of dealing with link failure is improved obviously.Simulation results show that the proposed strategy improves network performance significantly,such as inmerits of control overhead and packet delay.

关 键 词：ad hoc networks routing protocol ad hoc on-demand distance vector routing protocol（AODV） route maintenance next-to-next hop 

分 类 号：TN929.5[电子电信—通信与信息系统]