摘要
车载自组织网络(Vehicular Ad Hoc Network,VANET)越来越引起人们的广泛关注,虽然该网络与传统的自组织网络有类似的地方,比如网络中的节点可以自组织和自管理。但是它有自己重要特征:网络中的节点具有很快的移动速度,由于这种高速的移动,造成车载网络拓扑结构频繁的变化,导致网络中多跳路由的频繁断开,进而对路由的可靠性和数据传输的质量带来很大的挑战。路由选择是实现VANET的关键。我们提出一种利用静态节点辅助的路由方法(Static-Node Assisted Routing,SNAR)来提高数据包的传输效率。模拟实验显示,SNAR在端到端延时等方面要优于其它的多跳路由方法。
VANET （vehicular ad hoc network） has attracted great interest in the research community recently. VANET can realize self-organization and self-management, which is similar with traditional self-organization networks. However, it has some specific attributes such as high mobility of nodes, which cause dynamic topology, the easily breakable link and bring to significantly impact on performance of routing. Routing is one of the fundamental components for the success of VANET applications. This paper proposes a static-node assisted routing to improve the efficiency of transmission. The proposed routing was compared with other existing vehicular routing. Simulation results show that significant performance improvement has been achieved in terms of packet delivery ratio, end-to-end delay.
基金
湖北省自然科学基金(2010CDA004)
中央高校基本科研业务费专项资金项目(201121102020007)
