车载自组网城市环境信道传播模型设计与仿真

doi:10.11772/j.issn.1001-9081.2016.10.2680

计算机应用 ›› 2016, Vol. 36 ›› Issue (10): 2680-2685.DOI: 10.11772/j.issn.1001-9081.2016.10.2680

车载自组网城市环境信道传播模型设计与仿真

李桂森^1,2, 陈仁¹, 朱顺痣^1,2

1. 厦门理工学院计算机与信息工程学院, 福建厦门 361024;
2. 厦门市智慧交通诱导工程技术研究中心(厦门理工学院), 福建厦门 361024

收稿日期:2016-04-19 修回日期:2016-05-25 出版日期:2016-10-10 发布日期:2016-10-10
通讯作者: 李桂森,E-mail:lgs@xmut.edu.cn
作者简介:李桂森(1980—),男,广东肇庆人,讲师,博士,主要研究方向:VANET数据分发与收集、VANET路由;陈仁(1983—),男,福建平潭人,讲师,博士研究生,主要研究方向:社交网络、智能交通大数据;朱顺痣(1973—),男,福建东山人,教授,博士,CCF会员,主要研究方向:数据挖掘、智能信息推荐、隐私保护、系统工程。
基金资助:
福建省自然科学基金资助项目（2015J01276）；厦门理工学院高层次人才项目（YKJ12022R）；厦门理工学院科研基金资助项目（E201411329）；厦门市科技计划项目（3502Z20150006）。

Design and simulation of channel propagation model for vehicular Ad Hoc network under urban environment

LI Guisen^1,2, CHEN Ren¹, ZHU Shunzhi^1,2

1. School of Computer and Information Engineering, Xiamen University of Technology, Xiamen Fujian 361024, China;
2. Xiamen Engineering Research Center for Intelligent and Inductive Transportation System (Xiamen University of Technology), Xiamen Fujian 361024, China

Received:2016-04-19 Revised:2016-05-25 Online:2016-10-10 Published:2016-10-10
Supported by:
This work is partially supported by the Natural Science Foundation of Fujian Province (2015J01276), the High-level Talent Project of Xiamen University of Technology (YKJ12022R), the Natural Science Foundation of Xiamen University of Technology (E201411329), the Science and Technology Planning Project of Xiamen (3502Z20150006).

摘要/Abstract

摘要： 针对车载自组网（VANET）在城市环境中信道传播模型不真实的问题，提出了一个考虑障碍物影响的信道传播模型。首先，通过地图位置处理把信号的传播分为直接的视距传输、经过1次转向的非视距传输和禁止传输三类；其次，给出了视距与非视距传输下接收端的接收功率表达式；最后，推导了Nakagami分布下的分组传递率。理论分析和洪泛广播协议仿真实验结果表明，该模型有效反映了信号传播受路旁障碍物影响的真实情况，在轻负载的稀疏场景降低了31.4个百分点的覆盖率，而在重负载的稠密场景则提升了13.32个百分点的覆盖率。所提模型模拟了5.9 GHz高频信号的直线传输效应，为通信协议的设计策略以及真实的VANET仿真提供了依据。

关键词: 车载自组网, 传播模型, 非视距, 障碍物, 分组传递率

Abstract: Since the channel propagation model for Vehicular Ad Hoc NETwork (VANET) is unrealistic in the urban environment, an propagation model considering the impact of obstacle was proposed. Firstly, using the position of the vehicle in the digital map, the propagation of the signal was classified into three types: Line Of Sight (LOS), Not Line Of Sight with one (NLOS-1) turn and prohibitive propagation. Secondly, the expression of the received signal power was introduced under the conditions of LOS and NLOS-1. Finally, the packet delivery ratio with Nakagami distribution was deduced. Theoretical analysis and simulation results show that the model can reflect an realistic propagation of the signal which is hindered by the obstacles at roadside, the reachability is decreased by 31.4 percentage points in light load and sparse network, while it is increased by 13.32 percentage points in heavy load and dense network. The rectilinear propagation effect of the high frequency 5.9 GHz signal was simulated by the proposed model, which provides a basis for the communication protocol design and the realistic simulation of VANET.

Key words: Vehicular Ad Hoc NETwork (VANET), propagation model, Not Line Of Sight (NLOS), obstacle, Packet Delivery Ratio (PDR)

中图分类号:

TP393.01

李桂森, 陈仁, 朱顺痣. 车载自组网城市环境信道传播模型设计与仿真[J]. 计算机应用, 2016, 36(10): 2680-2685.

LI Guisen, CHEN Ren, ZHU Shunzhi. Design and simulation of channel propagation model for vehicular Ad Hoc network under urban environment[J]. Journal of Computer Applications, 2016, 36(10): 2680-2685.

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车载自组网城市环境信道传播模型设计与仿真

Design and simulation of channel propagation model for vehicular Ad Hoc network under urban environment

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