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车载自组织网络(VANET,Vehicular Ad hoc Network)近几年受到高度关注,同时多跳安全消息路由成为VANET应用的核心问题之一。试图借助梯度场的方法,研究VANET网络安全消息的定向、受限空间及拓扑动态变化条件的传播机制,以达到快速准确地传播安全消息的目的。提出了一种局部梯度场的路由协议(LGFR,Local Gradient Field Routing),并与城市场景下的贪婪边界无状态路由(GPSR,Greedy Perimeter Stateless Routing)和无线自组网按需平面距离矢量路由(AODV,Ad hoc On-DemandDistance Vector Routing)进行了对比。仿真结果表明,LGFR在数据包丢包率、数据包端到端平均时延和全局数据吞吐量方面具有较好的性能。
VANET (Vehicular Ad Hoc Network) has drawn much attention in recent years, and multi-hop routing of secure messages has become one of the core issues in VANET applications. Attempts to study the transmission mechanism of orientation, restricted space and topological dynamic change conditions of VANET network security message with the aid of gradient field method in order to achieve the purpose of spreading secure messages quickly and accurately. This paper proposes a Local Gradient Field Routing (LGPR) protocol, which is combined with Greedy Perimeter Stateless Routing (GPSR) and on-demand plane distance vector routing AODV, Ad hoc On-Demand Distance Vector Routing). Simulation results show that LGFR has better performance in terms of packet loss rate, average delay of end-to-end data packet and global data throughput.