软件定义的VANET系统设计与实现  

Design and Implementation of Software-defined VANET System

作　　者：孔祥会 赵国锋[1] 邓炳光[1] 周继华 张蕾[3] 徐川[1] KONG Xiang-hui;ZHAO Guo-feng;DENG Bing-guang;ZHOU Ji-hua;ZHANG Lei;XU Chuan(School of Communication and Information Engineering,Chongqing University of Post and Telecommunications,Chongqing 400065,China;Chongqing Jinmei Communication Co.Ltd.,Chongqing 400030,China;China Telecom Corporation Technology Innovation Center,Beijing 102209,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆市金美通信有限责任公司,重庆400030 [3]中国电信股份有限公司技术创新中心,北京102209

出　　处：《小型微型计算机系统》2020年第10期2140-2145,共6页Journal of Chinese Computer Systems

基　　金：十三五重点实验室项目(61422090301)资助;国家重大专项项目(2018ZX03001016)资助;重庆市技术创新与应用示范项目(cstc2018jszx-cyzdX0120)资助;重庆市研究生科研创新项目(CYB19176)资助。

摘　　要：传统车载自组织网络(VANET)采用软硬件高度耦合的架构,导致系统的可扩展性和灵活性较差.软件定义网络(SDN)的新特性可实现VANET网络功能的灵活可编程,进而极大地优化VANET架构.针对当前需求,本文提出并实现了一种基于SDN的VANET系统,该系统重构了车载节点与路边节点,实现节点的WAVE特性,并将网络节点的控制功能从底层软件抽象为可编程接口满足SDN架构的需求,新增集中控制单元实时监控网络状态并管理网络节点,新增应用模块实现系统的可编程特性,同时设计了基于可编程接口的应用对信道切换时间进行管理.实验结果表明,本系统部署简单,设备符合WAVE协议标准,系统架构具备良好的集中控制能力,可编程接口灵活易用,有效提升了VANET的网络性能.Traditional vehicular ad-hoc netw ork(VANET)adopts a highly coupled architecture of hardw are and softw are,resulting in poor scalability and flexibility of the system.New features of Softw are Defined Netw orking(SDN)enable flexible programming of VANET netw ork functions and greatly optimize the VANET architecture.Aiming at the current demand,this paper proposes an SDNbased VANET system,w hich reconstructs the vehicle node and the roadside node,realizes the WAVE feature of the node,and abstracts the control function of the netw ork node from the underlying softw are to the programmable interface to meet the SDN architecture.The new centralized control unit monitors the netw ork status and manages the netw ork nodes in real-time,adds application modules to implement the programmable features of the system,and designs a programmable interface-based application to manage the channel sw itching time.The experimental results show that the system is simple to deploy,the device conforms to the WAVE protocol standard,the system architecture has good centralized control capability,and the programmable interface is flexible and easy to use,w hich effectively improves the netw ork performance of VANET.

关 键 词：VANET 软件定义网络 可编程 WAVE协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]