基于链路时间预测的移动Ad Hoc网路由

Link Duration-Prediction-Based Routing Protocol in Mobile Ad Hoc Networks

移动Ad Hoc网络是一种自组织、无基础设施的网络。而节点的自由移动促使链路频繁的断裂。为此,提出基于链路连通时间预测路由LDPR(Link Duration-Prediction-based Routing)。LDPR路由先通过节点运动信息,预测链路的连通时间。然后,再依据链路的连通时间计算路由生成时间,并选择两条路由生成时间长的路由协同传输数据,一条路由作为主路由,另一条路由作为备用路由。通过双路由机制,提高数据包的传输效率。实验数据表明,相比于传统的按需距离矢量AODV(Ad Hoc On-demand Distance Vector)路由,LDPR路由在吞吐量和端到端传输时延方面的性能得到有效改善。

Mobile Ad Hoc networks are self-organizing,infrastructure-free networks. In Mobile Ad Hoc networks,mobile nodes can move freely,which cause frequent link breakage.Therefore,Link Duration-Prediction-based Routing(LDPR)is proposed in this paper. The LDPR first predict the link connectivity time by motion information of nodes. Then,the routing generation time is calculated based on the connectivity time of the link,and two routes with long routing generation time are selected to co-transmit data,one as the main route and the other as the standby route. Double routing mechanism improves the transmission efficiency of data packets. Experimental data show that,compared with the traditional Ad Hoc On demand Distance Vector(AODV)routing,the performance of LDPR routing in terms of throughput and end-to-end transmission delay is effectively improved.