车载网中一种基于链路稳定度的路由方法

车载自组织网络VANET(vehicular ad hoc network)由于车辆高速移动性、分布不均匀、运动行为受交通环境限制等因素的影响,使得VANET具有网络拓扑结构变化频繁、传输信号受干扰大、网络易于断裂等固有特性。路由选择是VANET的重要组成部分。如何选择下一跳节点是实现路由方法的关键,链路稳定度是衡量VANET性能的重要因素。本文通过计算预期路径的链路稳定度来选择下一跳节点,提出一种基于链路稳定度的路由方法。实验结果表明与传统的AODV相比,本文提出的方法在端到端延时,数据包的传递率等方面有较大的提高。

A Link-Stability-Based Routing in VANET

VANET （vehicular ad hoc network） has some specific attributes such as dynamic topology, weak signal transmission and the easily breakable link, which is caused by the constrained of road, the distribution and high mobility of nodes. Routing is one of the fundamental components for the success of VANET applications. The key factor of routing is how to select the next node to relay packets. Link stability is an important factor that evaluates the performance of routing. This paper proposes a link-stability routing based on calculating the stability of expected link to select the next relay, which was compared with traditional protocol such as AODV. Simulation results show that significant performance improvement has been achieved in terms of packet delivery ratio, end-to-end delay.