VANET中基于模糊逻辑的RSU自适应数据更新方案  

Adaptive Data Update Scheme for RSU Based on Fuzzy Logic in VANET

作　　者：郝伟强 熊书明[1] HAO Weiqiang;XIONG Shuming(College of Computer Science and Communication Engineering,Jiangsu University,Zhenjiang,Jiangsu 212000,China)

机构地区：[1]江苏大学计算机科学与通信工程学院

出　　处：《计算机工程》2019年第11期86-90,96,共6页Computer Engineering

基　　金：国家自然科学基金(61702231);江苏省自然科学基金(BK20170556)

摘　　要：在基于路边基站(RSU)的车载自组网(VANET)路由协议中,RSU以固定周期更新数据导致交通控制中心(TCC)的部分数据容易失效,造成数据包丢失,严重影响路由协议性能。为此,提出一种基于模糊逻辑的RSU自适应数据更新周期计算方案。RSU根据自身服务范围内车辆节点的运动状况,利用注册表中数据量和数据更新速率参数,设计模糊逻辑控制系统,自适应计算数据更新周期,从而提高TCC中数据的有效性。实验结果表明,与BUS-VANET路由协议相比,基于该方案的VANET路由协议能够提升通信链路的稳定性和可靠性,并降低数据更新包数量和传输时延。In the routing protocols of Vehicular Ad Hoc Network(VANET)based on Road Side Unit(RSU),RSU updates data at a regular basis,causing a high risk of data invalidation in the Traffic Control Center(TCC).The resultant data packet loss can have a significant influence on the routing protocol performance.To address the problem,this paper proposes a fuzzy logic-based adaptive scheme to calculate the data update cycle of RSU in VANET.The scheme enables RSU to design a fuzzy logic-based control system,which considers the movement of vehicle nodes within the service scope of RSU and takes the data volume and data update speed in the registry as two inputs.The system can adaptively calculate the data update cycle to improve data validity in TCC.Experimental results show that compared with the BUS-VANET routing protocol,the VANET routing protocol based on this scheme can improve the stability and reliability of communication channels,and reduce the number of data update packets and transmission delay.

关 键 词：车载自组网 路由协议 模糊逻辑 路边基站 自适应数据更新 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]