| 稀疏交通环境下基于轨迹的车联网数据分发 |
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| 引用本文： | 彭鑫,申巧巧,李文,刘志鹏.稀疏交通环境下基于轨迹的车联网数据分发[J].软件学报,2016,27(S1):59-70. |
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| 作者姓名： | 彭鑫 申巧巧 李文 刘志鹏 |
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| 作者单位： | 湖南理工学院 信息与通信工程学院, 湖南 岳阳 414006;复杂工业物流系统智能控制与优化湖南省重点实验室(湖南理工学院), 湖南 岳阳 414006,湖南理工学院 信息与通信工程学院, 湖南 岳阳 414006;复杂工业物流系统智能控制与优化湖南省重点实验室(湖南理工学院), 湖南 岳阳 414006,湖南理工学院 信息与通信工程学院, 湖南 岳阳 414006;复杂工业物流系统智能控制与优化湖南省重点实验室(湖南理工学院), 湖南 岳阳 414006,湖南理工学院 信息与通信工程学院, 湖南 岳阳 414006;复杂工业物流系统智能控制与优化湖南省重点实验室(湖南理工学院), 湖南 岳阳 414006 |
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| 基金项目： | 国家自然科学基金（61300039）；湖南省自然科学基金（14JJ3130）；湖南省教育厅重点项目（12A057）；湖南省研究生科研创新项目（CX2016B671） |
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| 摘 要： | 在稀疏交通环境下，车联网的数据转发机会较少，车辆携带数据时间较长，从而造成较大的数据传输时延.针对该问题，提出了基于车辆轨迹信息的数据转发协议（data dissemination based on trajectory，简称DDBT）.协议采用“携带+连通组件”思想，通过分析双向交通路段延迟特征，建立了端对端传输延迟模型，提出了在路口接入点协助下基于最小传输延迟期望的车辆留存副本多径转发原则.理论分析及仿真实验结果表明，提出的DDBT协议在稀疏交通环境下表现出较好的数据传输延迟性能.
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| 关 键 词： | 稀疏车联网 数据传输 路段延迟模型 多径转发 |
| 收稿时间： | 2016/5/31 0:00:00 |
| 修稿时间： | 2016/9/29 0:00:00 |
Data Dissemination Based on Trajectory for Sparse VANETs |
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| PENG Xin,SHEN Qiao-Qiao,LI Wen and LIU Zhi-Peng.Data Dissemination Based on Trajectory for Sparse VANETs[J].Journal of Software,2016,27(S1):59-70. |
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| Authors: | PENG Xin SHEN Qiao-Qiao LI Wen and LIU Zhi-Peng |
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| Affiliation: | College of Information and Communication Engineering, Hu''nan Institute of Science and Technology, Yueyang 414006, China;Key Laboratory on Complex Industrial Logistics Systems Intelligent Controlling and Optimization of Hu''nan Province(Hu''nan Institute of Science and Technology), Yueyang 414006, China,College of Information and Communication Engineering, Hu''nan Institute of Science and Technology, Yueyang 414006, China;Key Laboratory on Complex Industrial Logistics Systems Intelligent Controlling and Optimization of Hu''nan Province(Hu''nan Institute of Science and Technology), Yueyang 414006, China,College of Information and Communication Engineering, Hu''nan Institute of Science and Technology, Yueyang 414006, China;Key Laboratory on Complex Industrial Logistics Systems Intelligent Controlling and Optimization of Hu''nan Province(Hu''nan Institute of Science and Technology), Yueyang 414006, China and College of Information and Communication Engineering, Hu''nan Institute of Science and Technology, Yueyang 414006, China;Key Laboratory on Complex Industrial Logistics Systems Intelligent Controlling and Optimization of Hu''nan Province(Hu''nan Institute of Science and Technology), Yueyang 414006, China |
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| Abstract: | In sparse traffic vehicular ad hoc networks (VANETs) environment, vehicles usually have limited data forwarding opportunities. Packets are carried by vehicles for a long time, and as a result there is larger data transmission delay in sparse VANETs. In order to alleviate the problem, a data delivery protocol named Data Dissemination Based on Trajectory (DDBT) is proposed for sparse VANETs. In this protocol, packets are delivered according to trajectory of vehicles and forwarded under the assistance of connected component of VANETs. The concept of carry and connected component is employed. In addition, link delay model of road segment is deduced under two-way traffic environment, and based on that, end-to-end delivery delay model of packets is established. According to the delay model, multi-path forwarding strategy is proposed by using the minimal expected delivery delay. Theoretical analysis and simulation experiments show that the DDBT protocol has preferable performance in data delivery delay in sparse VANETs. |
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| Keywords: | sparse VANETs data transmission link delay model multi-path forwarding |
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