基于混合信息和冗余传输的VANETs路由协议

发布时间：2018-04-05 10:02

本文选题：车载自组织网络(VANETs)　切入点：城市环境　出处：《合肥工业大学学报(自然科学版)》2017年10期

【摘要】：车辆节点的快速移动导致网络拓扑频繁变化和无线链路质量不稳定,这为车载自组织网络(vehicular ad-hoc networks,VANETs)路由协议的研究带来挑战。为了应对这些挑战,文章提出了基于混合信息和冗余传输的VANETs路由协议。针对城市环境下道路的特点抽象出一个以交叉路口为顶点,以路段为边的无向图,并依托部署在路口的固定节点收集交通和网络的实时信息为每条边赋予权值,然后运用Dijkstra算法计算任意2个交叉路口间的最短路径;针对路段内的数据传输,综合考虑距离、速度和链路可靠性等因素来选择下一跳节点,并通过冗余传输技术提高数据传输的成功率。通过仿真实验对比现有协议,验证了该路由协议在性能上的优越性。
[Abstract]:The rapid movement of vehicle nodes leads to frequent changes in network topology and unstable wireless link quality, which brings challenges to the research of vehicular ad-hoc networks (VANETs) routing protocols.To meet these challenges, this paper proposes a VANETs routing protocol based on mixed information and redundant transmission.According to the characteristics of the road in the urban environment, an undirected graph with the intersection as the vertex and the road section as the edge is abstracted, and each edge is endowed with weights by collecting the real-time information of the traffic and network based on the fixed nodes deployed at the intersection.Then Dijkstra algorithm is used to calculate the shortest path between any two intersections, and considering the distance, speed and link reliability to select the next hop node.The success rate of data transmission is improved by redundant transmission technology.The performance of the routing protocol is verified by comparing the existing protocols with simulation experiments.
【作者单位】：合肥工业大学计算机与信息学院;安全关键工业测控技术教育部工程研究中心;合肥工业大学机械工程学院;
【基金】：国家电子信息产业发展基金资助项目(工信部财函[2011]506号) 国家国际科技合作专项资助项目(2012DFB10060)
【分类号】：TN929.5;U495

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