期刊名称：International Journal of Computer Science & Information Technology (IJCSIT)
印刷版ISSN：0975-4660
电子版ISSN：0975-3826
出版年度：2015
卷号：7
期号：6
页码：83
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In the last few years, the Vehicular Ad-hoc Network (VANET) has come to be an important area ofresearch. Significant research has been conducted to improve the performance of VANETS. One output offurther research conducted on VANET is the Vehicular Delay Tolerant Network (VDTN). It is anapplication of the mobile DTN where nodes relay messages in the network using a store-carry-forwardapproach. Due to its high mobility, it suffers frequent disconnections and also congestions at nodes whichleads to message drops. To minimize the rate of message drops and so optimize the probability of messagedelivery so that drivers are increasingly aware of the situation of the road, we propose a congestioncontrol mechanism: Congestion Aware Spray and Wait (CASaW) protocol in this work so as to optimize therate of message delivery to its destination and so increase the awareness of drivers in the vehicularenvironment thereby improve road safety. The results have shown that our proposition performed betterthan other classical VDTN protocols in terms of message delivery probability and rate of packet dropsperformance measures. We used the Opportunistic Networking Environment (ONE) simulator to implementthe classical VDTN protocols: the PROPHET protocol, the Epidemic protocol, the MaxProp protocol andthe Spray and Wait Protocol. The simulation scenarios shows a better performance for the congestioncontrol mechanism we propose as it maintains a good message delivery rate as well as minimize the rate ofpacket losses thereby optimizing the chances of messages getting to their destinations and so improve roadsafety.
