基于移动模型的车载自组织网络连通特征  

Connectivity characteristics based on mobility model for vehicular Ad Hoc networks

作　　者：冯慧芳[1] 孟玉如 

机构地区：[1]西北师范大学数学与统计学院,兰州730070

出　　处：《计算机应用》2015年第7期1829-1832,1848,共5页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61363081);甘肃省高等学校基本科研业务费;甘肃省科技计划资助项目(1308RJZA294)

摘　　要：针对车载自组织网络(VANET)的连通性问题,分析了其拓扑动态变化过程中网络的连通性的演化特征。首先,提出以连通分支数、连通概率及连通长度为评价指标的VANET拓扑连通性参数;然后,结合车辆换道功能的智能驾驶移动模型(IDM-LC),应用Vanet Mobi Sim仿真软件建立VANET;最后,通过仿真实验分析了节点通信半径与平均连通分支数、平均连通率及平均连通长度之间的关系,同时分析了VANET连通分支数的统计分布特征,用Q-Q图和T检验验证得出结论:连通分支数服从正态分布,且该统计分布特征与节点通信半径无关。Aiming at the problem of connectivity in Vehicular Ad Hoc Network （ VANET）, the evolution characteristics of connectivity characteristics for VANET were analyzed. Firstly, the number of connected components, connectivity probability and connectivity length were proposed to be used for the evaluation connectivity metrics for VANET. Then, based on Intelligent Driver Model with Lane Changes （IDM-LC）, the VANET was set up through VanetMobiSim software. Finally, the relation of node communication radius and the average number of connected components, average connectivity probability and average connectivity length were given. At the same time, the statistical distribution of the number of connected components was also analyzed. The results show that number of connected components follows a normal distribution by using Q-Q plot and T-test. Moreover, the results also show that the statistical distribution of the number of connected components is independent of the node communication radius.

关 键 词：车载自组织网络 连通性 统计分布 换道功能的智能驾驶模型 VANET Mobi SIM 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]