车用自组织网络路由判据研究进展  

Research and development of routing metrics for VANET

作　　者：陈宇峰[1,2] 向郑涛[1] 董亚波[2] 鲁东明[2] 

机构地区：[1]湖北汽车工业学院电气与信息工程学院,湖北十堰442002 [2]浙江大学计算机科学与技术学院,浙江杭州310027

出　　处：《计算机工程与设计》2010年第10期2191-2195,共5页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2007AA01Z240);中国博士后科学基金项目(20070411180);湖北省高等学校优秀中青年科技创新团队计划基金项目(T200903);湖北汽车工业学院博士科研启动基金项目(BK200901)

摘　　要：分析了车用自组织网络(vehicular Ad-hoc NETwork,VANET)中基于位置信息的路由判据、基于车辆运动信息的路由判据和基于链路质量的路由判据的优缺点,提出了结合跳数指标和车辆速度以及重传数的路由判据,以限制路径长度;采用多径路由思想以减少路由发现频率;为解决车辆运动信息采集方面的通用性和车辆改装问题,提出了利用OBD(on-board diagnostic)技术的车辆信息获取方法。仿真结果表明,基于上述两种改进判据的协议S-AOMDV和R-AOMDV获得比最小跳数AOMDV(Ad hoc on-demand multipath distance vector)协议更高的性能,特别是在节点负载较重的情况下,S-AOMDV和R-AOMDV的PDF(packet delivery fraction)提高了3.54%和5.53%,E-EDelay(average end-to-end delay)降低了11.92%和53.95%。The advangages and disadvangages of position-based metrics,vehicular-motion-based metrics and link-quality-based metrics for VANET（vehicular Ad-hoc NETwork） are analyzed.Two routing metrics are proposed,which are the metric combining hop counts and vehicle speed,and the metric combining hop counts and retransmission counts.The two new metrics can limit routing length.In addition,the multipath routing idea is used to decrease route discovery frequency.Furthermore,a method of vehicular information col-lection using OBD（on-board diagnostic） technology is proposed to solve the problems of compatibility and modification of vehicles.Simulation results show that the two routing protocols based on the above two improved metrics,termed as S-AOMDV and R-AOMDV,achieve better performance than AOMDV（Ad hoc on-demand multipath distance vector） with minimum hop-count metric.Especially with high load,the performance metrics of PDF（packet delivery fraction） of S-AOMDV and R-AOMDV are improved by 3.54% and 5.53%,respectively,while the performance metrics of Average End-to-End Delay are reduced by 11.92% and 53.95%,respectively.

关 键 词：车用自组织网络 路由判据 位置信息 车辆运动信息 链路质量信息 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]