摘要
在移动Ad Hoc网络中,随着拓扑的动态变化,路由会发生断裂;传统的稳定路由协议通常定性地考虑链路的质量,并未对链路的稳定性进行有效预测;为了适应网络拓扑的变化,建立稳定性较高的路由,提出了基于位置信息辅助的链路稳定性预测算法,并在AODV协议上进行实现,得到了基于位置辅助的按需距离矢量路由协议,即PB-AODV;在路由发现过程中,协议在节点的稳定区内选择稳定度较高的路由进行数据传送;而在路由维护阶段,PB-AODV采取链路中断预测机制,对即将中断的链路进行通告,在路由中断之前进行路由修复,建立起备份路由;实验表明:具有稳定预测算法的PB-AODV协议在综合性能上优于其他两种性能优良的路由协议,提升了网络的性能。
In mobile Ad Hoc networks,with dynamic topology changes,route will break.Traditional stable routing protocols usually consider the link stability in qualitative aspects,and don＇ t predict the link stability in quantitative aspects.In order to adapt to changes in network topology and establish stable routes,this paper proposes the link stability prediction algorithm based on position information,and implement it in AODV protocol.We get a novel position-aided on-demand distance vector routing protocol,namely PB-AODV.In the routing discovery,protocol exploits nodes which are in stable zone to establish routes,and selects routes with high stability to transmit data.While in the routing maintenance process,PB-AODV takes the link breakage prediction mechanism,by informing the source node of the link which is going down,and repairs the route before the link gets broken and set up a backup route.Experimental results show that PB-AODV protocol with stability prediction algorithm is better than two excellent routing protocols in overall performance,and the network performance is also improved.
出处
《计算机测量与控制》
2015年第2期500-503,共4页
Computer Measurement &Control
基金
国家自然科学基金资助项目(61271249)
