计算机应用 ›› 2017, Vol. 37 ›› Issue (2): 445-449.DOI: 10.11772/j.issn.1001-9081.2017.02.0445

• 网络与通信 • 上一篇    下一篇

车载自组织网络动态中心性分析

冯慧芳, 王俊霞   

  1. 西北师范大学 数学与统计学院, 兰州 730070
  • 收稿日期:2016-08-03 修回日期:2016-09-28 出版日期:2017-02-10 发布日期:2017-02-11
  • 通讯作者: 冯慧芳,hffeng@nwnu.edu.cn
  • 作者简介:冯慧芳(1971-),女,甘肃古浪人,教授,博士,CCF会员,主要研究方向:移动无线网络、网络性能分析、复杂网络;王俊霞(1993-),女,甘肃平凉人,硕士研究生,主要研究方向:车载自组织网络。
  • 基金资助:
    国家自然科学基金资助项目(61363081,71561024);甘肃省高等学校基本科研业务费资助项目;甘肃省自然科学基金资助项目(1506RJZA121)。

Dynamic centrality analysis of vehicle Ad Hoc networks

FENG Huifang, WANG Junxia   

  1. College of Mathematics and Statistics, Northwest Normal University, Lanzhou Gansu 730070, China
  • Received:2016-08-03 Revised:2016-09-28 Online:2017-02-10 Published:2017-02-11
  • Supported by:
    This work is partially supported by the National Natural Science Foundation of China (61363081, 71561024), the Fundamental Research Funds for the Gansu Universities, the Natural Science Foundation of Gansu Province (1506RJZA121).

摘要: 针对车载自组织网络(VANET)拓扑结构的动态性特征,基于车辆换道功能的智能驾驶移动模型,应用VanetMobiSim仿真软件详细研究车载自组织网络拓扑结构的动态中心性。构建VANET时序网络模型,建立基于衰落因子和信息存储转发指数的动态中心性评价方法,该方法不仅能够描述当前网络拓扑与历史网络拓扑之间的联系,而且能够刻画VANET中信息的存储转发机制;最后,通过仿真实验分析了VANET动态中心性。结果表明虽然VANET拓扑结构的动态中心性随着衰落因子和信息存储转发指数的变化而变化,但重要节点整体的排名基本保持相对稳定的状态。该结论有助于更好地确定信息传播的中继节点,实现信息的成功投递,而且为VANET拓扑结构的抗毁性提供指导。

关键词: 车载自组织网络, 动态中心性, 重要节点, 排名, 仿真

Abstract: Dynamic network topology is one of the important characteristics of vehicle Ad Hoc networks (VANET). Based on Intelligent Driver Model with Lane Changes (IDM-LC), the VanetMobiSim was used to study the dynamic centrality of topology for VANET in detail. The temporal network model of VANET was built. The evaluation method of dynamic centrality based on the attenuation factor and information store-and-forward index was established, which not only can describe the relation between the current network topology and the historical one, but also can depict the store-and-forward mechanism of information transmission in VANET. Finally, the dynamic centrality of VANET was analyzed through the simulation experiment. The results show that although the dynamic centrality of VANET topology varies with time and parameters, the ranking of important nodes remains relatively stable. This conclusion not only can help us identify the relay nodes of information transmission better to achieve the successful delivery of information, but also provides guidance for invulnerability of VANET topology.

Key words: Vehicle Ad hoc Network (VANET), dynamic centrality, important node, ranking, simulation

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