车载通信的网络连通性建模

doi:10.3969/j.issn.0255-8297.2017.01.007

Journal of Applied Sciences ›› 2017, Vol. 35 ›› Issue (1): 63-70.doi: 10.3969/j.issn.0255-8297.2017.01.007

• Communication Engineering • Previous Articles Next Articles

Connectivity Modeling for Vehicular Communication Networks

CHEN Si-min, ZHAO Hai-tao, ZHU Hong-bo, ZHANG hui

College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Received:2015-11-19 Revised:2016-06-20 Online:2017-01-30 Published:2017-01-30

Abstract

Abstract:

Vehicular communication network is a high-speed mobile Ad-Hoc network (MANET).Vehicle connectivity is important in studying multi-hop communications, and is a challenge due to rapid changes of topology caused by fast moving of vehicles and frequent disconnection of the network.In this paper, a connectivity model of vehicular communication network based on headway is established based on the point of headway.It is done by reasonably analyzing the trafc, and assuming that the headway follows the Erlang distribution and the speed of vehicles follows normal distribution.The relation between the numbers of arriving vehicles per unit time period and the average vehicle density, that between the range of communication and vehicle connectivity are analyzed.Simulation results show that the more vehicles arrive in a unit time period, the higher the average vehicle density.Consequently, an optimum range of communication can be obtained for good connectivity.The proposed network connectivity model is useful for transmitting data in vehicular communication networks.

Key words: vehicular connectivity, Erlang distribution, transmission range, vehicular Ad Hoc networks

CLC Number:

TN915

CHEN Si-min, ZHAO Hai-tao, ZHU Hong-bo, ZHANG hui. Connectivity Modeling for Vehicular Communication Networks[J]. Journal of Applied Sciences, 2017, 35(1): 63-70.

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Connectivity Modeling for Vehicular Communication Networks

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