Scheduling Algorithm for Beacon Safety Message Dissemination in Vehicular Ad-Hoc Networks

被引:4
作者
Sadatpour, Vahid [1 ]
Fathy, Mahmood [2 ]
Yousefi, Saleh [3 ]
Rahmani, Amir Masoud [1 ]
Cho, Eun-suk [4 ]
Choi, Min-kyu [4 ]
机构
[1] Islamic Azad Univ, Dept Comp, Sci & Res Branch, Tehran, Iran
[2] Iran Univ SciTechnol, Comp Engn Fac, Tehran, Iran
[3] Urmia Univ, Dept Comp Engn, Orumiyeh, Iran
[4] Hannam Univ, Dept Multimedia, Daejeon, South Korea
来源
COMMUNICATION AND NETWORKING | 2009年 / 56卷
关键词
beacon message dissemination; safety; scheduling; VANET;
D O I
10.1007/978-3-642-10844-0_17
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Beacon safety message dissemination in Vehicular Ad-hoc Networks (VANETs) suffers from poor reliability especially in congested road traffics. The main origin of this problem is CSMA nature of Dedicated Short Range C Communications (DSRC) in MAC layer. In this paper, a scheduling algorithm C in the application layer is proposed to alleviate the problem. We first divide the road into a number of geographical sections. In each section, we form a cluster the between moving vehicles. Then we perform a scheduling algorithm including two levels. In the first level, nonadjacent clusters can transmit at the same time. While the second level of scheduling deals with inside of each cluster in which we implement a TDMA-like approach. Simulation results show that the proposed algorithm improves the reliability in beacon message dissemination. Moreover, the accuracy of the information which each vehicle can obtain from its neighboring vehicles is significantly increased. Thus the proposed scheduling scheme leads to considerable enhancement of the safety level provided by Beacon Safety Messages (BSMs).
引用
收藏
页码:133 / +
页数:2
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