车载自组织网络中基于停车骨干网络的数据传输

发布时间：2018-05-25 19:02

本文选题：车载自组织网络 + 簇　；参考：《软件学报》2016年02期

【摘要】：车载自组织网络(vehicular ad hoc networks,简称VANETs)具有网络间歇连通、节点高速移动及动态的网络拓扑结构等特性,如何有效地实现车辆间的数据传输,成为VANETs的重大挑战.现有研究工作基于历史交通流量或历史延迟预测路段当前交通状况的方法并不可靠.此外,要实现高效的数据路由传输,配置大量路边基础设施节点(deploying roadside unit,简称RSU)是一种可行方案,但通常需要额外开销.基于城市区域长时间拥有大量地上停放车辆这一事实,提出了基于停车骨干网络的数据传输策略PBBD(parking backbone based data delivery),不需要配置任何地面基础设施,而是把地面的停放车辆组成一个虚拟的停车覆盖网络,通过该停车覆盖网实现数据的传输.为此,首先,对于每一条道路,把路边和非路边停放车辆组成一个尽可能长的停车簇,并基于这些停车簇组织城市停车骨干网络.其次,设计基于停车覆盖网络的全新数据传输算法来实现车辆间的有效数据传输.基于真实城市地图和交通数据的模拟实验结果表明,与现有的几种数据传输算法相比,PBBD能够以较低的网络传输开销和较小的传输延迟获得较高的数据传输成功率.
[Abstract]:The vehicle-mounted ad hoc networks, (VANETs) is characterized by intermittent network connectivity, high-speed node movement and dynamic network topology. How to effectively implement data transmission between vehicles has become a major challenge for VANETs. The existing methods based on historical traffic flow or historical delay to predict the current traffic situation of road sections are unreliable. In addition, to achieve efficient data routing, configuring a large number of roadside infrastructure nodes to deploy roadside unit (RSUs) is a feasible solution, but usually requires additional overhead. Based on the fact that there are a large number of vehicles parked on the ground for a long time in urban areas, a data transmission strategy based on the parking backbone network, PBBD(parking backbone based data delivery strategy, is put forward without the need to configure any ground infrastructure. Instead, a virtual parking overlay network is formed by parking vehicles on the ground, and the data is transmitted through the parking overlay network. First of all, for each road, a parking cluster of roadside and off-road parking vehicles is formed as long as possible, and based on these parking clusters, the urban parking backbone network is organized. Secondly, a new data transmission algorithm based on parking overlay network is designed to realize the effective data transmission between vehicles. The simulation results based on real city map and traffic data show that PBBD can achieve higher data transmission success rate with lower network overhead and lower transmission delay than the existing data transmission algorithms.
【作者单位】：天津师范大学计算机与信息工程学院;电子科技大学计算机科学与工程学院;上海交通大学电子信息与电气工程学院;
【基金】：国家自然科学基金(61103227,61272526,61170256,61103226,61173172,61173171,61370204) 天津师范大学引进人才基金(5RL133)~~
【分类号】：TN929.5

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