基于移动网关选择的数据传输策略  

Data Transmission Strategy Based on Mobile Gateway Selection in VANETs

作　　者：刘新 常英贤 刘冬兰 谭虎 LIU Xin;CHANG Ying-xian;LIU Dong-Ian;TAN Hu(State Grid Shandong Electric Power Research Institute,Jinan 250003,China;State Grid Shandong Electric Power Company,Jinan 250000,China;State Grid Weifang Power Supply Company,Weifang 261041,China)

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250003 [2]国网山东省电力公司,山东济南250000 [3]国网山东省电力公司潍坊供电公司,山东潍坊261041

出　　处：《中国电子科学研究院学报》2019年第12期1286-1290,共5页Journal of China Academy of Electronics and Information Technology

摘　　要：为了提高车联网(Vehicle Ad hoc Networks,VANETs)中消息的分发效率,考虑V ANETs与长期演进LTE(Long-Term Evolution)的异构网络,并提出基于移动网关选择的数据传输策略(Data transmission strategy based on mobile gateway selection,DTMS)o DTMS策略将VANETs内的车辆划分为四类。并通过链路质量和车辆的移动速度信息择优选择车辆作为网关,并由网关协助车辆向Internet转发数据。同时,依据贪婪转发策略,选择下一跳转发节点。仿真结果表明,提出的DTMS策略有效地提高了数据包传递率,并控制路由开销。与按需平面距离向量路由(Ad hoc On-demand Distance Vector Routing,AODV)路由相比,DTMS策略的数据包传递率和归一化路由开销性能分别提高了近44.17%和15.87%.In order to improve performance of data dissemination of Vehicle Ad hoc Networks(VANETs),considering IEEE 802.11 p-and LTE based Hybrid Architecture,Data transmission strategy based on mobile gateway selection(DTMS)is proposed in this paper.The DTMS policy divides the vehi・cles in VANETs into four categories.Through link quality and vehicle speed information select the vehicle as the gateway,and the gateway to assist the vehicle to the Internet to forward data.Meanwhile,the next hop forwarding node is selected according to greedy forwarding strategy.Simulation results show that the proposed DTMS strategy can effectively improve the packet transfer rate and control the routing overhead.DTMS shows a 44.17%improvement in terms of packet delivery ratio and a 15.87%improvement in terms of normalized routing overhead over AODV routing.

关 键 词：车联网 IEEE 802.11p 长期演进 路由 移动网关 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]