| 基于802.11p/WAVE的车联网连通性模型及其应用研究 |
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| 引用本文： | 刘业,吴国新. 基于802.11p/WAVE的车联网连通性模型及其应用研究[J]. 通信学报, 2013, 34(6): 10-91. DOI: 10.3969/j.issn.1000-436X.2013.06.010 |
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| 作者姓名： | 刘业 吴国新 |
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| 作者单位： | 1. 中国科学技术大学 苏州研究院，江苏 苏州 215123；2. 中国科学技术大学 软件学院，江苏 苏州 215123；3. 阳立电子（苏州）有限公司，江苏 苏州 215000；4. 东南大学 计算机科学与工程学院，江苏 南京 210096 |
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| 基金项目： | 国家自然科学基金资助项目(60903181)；东南大学计算机网络和信息集成教育部重点实验室开放研究基金资助项目(K93-9-2010-14)；江苏省博士后基金资助项目(1101136C) |
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| 摘 要： | 首先对高速公路交通场景的车联网连通性模型进行了研究,分析推导了某特定路段上任意两车之间的连通概率、连通集直径长度以及连通集数目等连通性模型参数指标与车辆密度及传输距离之间关系的数学解析式,并在此基础上分析出车联网的节点位置是满足伽马分布的结论。接着根据车联网报文存储转发的特点,设计了一种车联网的报文格式,并应用连通性模型中的相关参数解析式给出了广播消息报文的TTL字段的初始值设定方案,从而能够有效地控制广播报文的泛滥情形,仿真实验证实了所建模工作的有效性,为车联网WAVE协议栈上层协议的设计提供了重要的理论基础。
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| 关 键 词： | 车联网 802.11p 连通性 泊松过程 伽马分布 |
Study on the connectivity model of VANETbased on 802.11p/WAVE and its application |
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| LIU Ye,WU Guo-xin. Study on the connectivity model of VANETbased on 802.11p/WAVE and its application[J]. Journal on Communications, 2013, 34(6): 10-91. DOI: 10.3969/j.issn.1000-436X.2013.06.010 |
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| Authors: | LIU Ye WU Guo-xin |
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| Affiliation: | 1. Suzhou Institute for Advanced Study,University of Science and Technology of China,Suzhou 215123,China;2. School of Software Engineering,University of Science and Technology of China,Suzhou 215123,China;3. Nettech Technology (Suzhou)Co.Ltd.,Suzhou 215000,China;4. School of Computer Science and Engineering,Southeast University,Nanjing 210096,China |
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| Abstract: | Firstly, a vehicular mobility model was proposed for the freeway traffic scenarios. Then the connectivity parameters of VANET, such as the connected probability between any two cars, the diameter size of connected cluster and the number of connected cluster, were analyzed. And on the basis of these, the conclusion that the location of VANET node at one time snapshot meets the gamma distribution was drawn. Furthermore, a VANET message package format considering flooding message number was designed, in which TTL field was discussed in detail by introducing the analytic expression of connectivity model. Finally, simulations also verify the conclusion. The connectivity model proposed should provide an important theoretical basis for the upper-level protocols of VANET WAVE stack. |
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| Keywords: | VANET 802.11p connectivity Poisson process Gamma distribution |
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