软件定义车联网的数据转发机制

发布时间：2018-01-11 07:20

本文关键词：软件定义车联网的数据转发机制　出处：《计算机应用》2017年01期 　论文类型：期刊论文

【摘要】：针对现有车联网(VANET)中数据转发效率低的问题,提出了软件定义网络(SDN)的数据转发机制。首先,设计了软件定义车联网的分层次网络模型,该模型由局部控制器和车辆组成,实现控制与数据转发分离,具有可扩展性、独行性等特点;其次,设计了车辆路由转发机制,该机制采用动态规划和二分搜索的方法,以实现高效的数据转发;最后,通过仿真验证,对比无线自组网按需平面距离向量路由(AODV)、目的节点序列距离矢量路由(DSDV)、动态源路由(DSR)和最优链路状态路由(OLSR)算法,所提的数据转发机制在传递成功比上提高大约100%,而端到端延迟时间降低大约20%。实验结果表明,软件定义车联网的数据转发机制能够提高路由转发效率、减小延迟。
[Abstract]:In order to solve the problem of low data forwarding efficiency in existing vehicle networking (vane), the data forwarding mechanism of software defined network (SDN) is proposed. Firstly, a hierarchical network model of software defined vehicle networking is designed. The model is composed of local controller and vehicle. It can separate the control from the data forwarding and has the characteristics of expansibility and independence. Secondly, a vehicle routing and forwarding mechanism is designed, which adopts dynamic programming and binary search to achieve efficient data forwarding. Finally, through the simulation verification, compared with the wireless ad hoc network on demand plane distance vector routing AODV, the destination node sequence distance vector routing DSDV). Dynamic Source routing (DSRs) and optimal Link State routing (OLSRs) algorithms, the proposed data forwarding mechanism improves the transmission success ratio by about 100%. The experimental results show that the data forwarding mechanism defined by software can improve the efficiency of routing and reduce the delay.
【作者单位】：仲恺农业工程学院计算科学学院;中山大学数据科学与计算机学院;国家电网莱芜供电公司;
【基金】：国家自然科学基金资助项目(61379157) 广东省科技计划项目(2015B010111001,2015A010103007) 广州市科技计划项目(201510010068)~~
【分类号】：TN929.5;U495
【正文快照】： 0引言近年兴起的车载自组织网络原是移动自组织网络的一个分支,随着IEEE802.11p[1]、IEEE1609[2]等标准的起草以及逐步确立,车载自组织网络逐渐从移动自组织网络中独立出来。车联网(Vehicular Ad Hoc Network,VANET)是由车辆与路边基础单元组成的车载网络,是以车载自组织网

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