Intermittent Geocast Routing in Urban Vehicular Delay Tolerant Networks

作     者：Zhiyuan Li Panpan Wu 

作者机构：the School of Computer Science and Telecommunication EngineeringJiangsu University Zhenjiang 212013 China the Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing 210003 China 

出 版 物：《Tsinghua Science and Technology》 (清华大学学报（自然科学版（英文版）)

年 卷 期：2016年第21卷第6期

页      面：630-642页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 0838[工学-公安技术] 081001[工学-通信与信息系统] 

基　　金：partially supported by the National Natural Science Foundation of China(Nos.61202474,61272074,61373017,and 61572260) the Project Funded by China Postdoctoral Science Foundation(No.2015M570469) the Natural Science Foundation of Jiangsu Province(No.BK20130528) the Key Research and Development Program(Social Development)Foundation of Zhenjiang(No.SH2015020) the Senior Professional Scientific Research Foundation of Jiangsu University(No.12JDG049) 

主　　题：urban vehicular delay tolerant networks geocast routing node forwarding capability connection time 

摘      要：Nowadays, both vehicular active safety service and user infotainment service have become two core applications for urban Vehicular Delay Tolerant Networks（u VDTNs）. Both core applications require a high data transmission capacity over u VDTNs. In addition, the connection between any two vehicles in u VDTNs is intermittent and opportunistic. Intermittent data dissemination over u VDTNs is a stringent and challenging issue. In this paper,we propose Intermittent Geocast Routing（IGR）. For the first step, IGR has to estimate the active connection time interval via the moving directions and velocities between any two vehicles. Second, the throughput function for u VDTNs is fitted by building a wavelet neural network traffic model. Third, the throughput function within the effective connection time interval is integrated to obtain the forwarding capability estimation of the node. Fourth, a high-efficiency geocast routing algorithm using the node forwarding capability for u VDTNs is designed. Finally, IGR is simulated on the opportunistic Network Environment simulator. Experimental results show that IGR can greatly improve the packet delivery ratio, transmission delay, delay jitter, and packet loss rate compared with the state of the art.