Congestion Aware Spray And Wait Protocol: A Congestion Control Mechanism For The Vehicular Delay Tolerant Network
Congestion Aware Spray And Wait Protocol: A Congestion Control Mechanism For The Vehicular Delay Tolerant Network
复制标题
拥塞感知喷雾等待协议：车辆延迟容忍网络的拥塞控制机制
DOI：
10.5121/ijcsit.2015.7607
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Radenkovic
中科院分区：
文献类型：
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作者：
Chuka Oham;M. Radenkovic
近年来，车载自组织网络（VANET）已成为一个重要的研究领域。为了提高VANETS的性能，已经进行了大量的研究。对VANET进行进一步研究的一个成果是车辆容忍延迟网络（VDTN）。它是移动DTN的一种应用，其中节点在网络中使用存储-前转方法中继消息。由于其高移动性，它遭受频繁的断开连接和节点拥塞，从而导致消息丢失。为了最小化消息掉落率，从而优化消息传递的概率，使驾驶员越来越了解道路状况，我们在本工作中提出了一种拥塞控制机制：拥塞感知喷雾和等待（CASaW）协议，以优化消息传递到目的地的速度，从而提高驾驶员对车辆环境的认识，从而提高道路安全。结果表明，我们的方案在消息传递概率和丢包率方面的性能指标优于其他经典VDTN协议。我们使用机会网络环境（ONE）模拟器来实现经典的VDTN协议：PROPHET协议、Epidemic协议、MaxProp协议和Spray and Wait协议。仿真场景显示了我们提出的拥塞控制机制的更好性能，因为它保持了良好的消息传递率，并最小化了数据包丢失率，从而优化了消息到达目的地的机会，从而提高了道路安全。
In the last few years, the Vehicular Ad-hoc Network (VANET) has come to be an important area of research. Significant research has been conducted to improve the performance of VANETS. One output of further research conducted on VANET is the Vehicular Delay Tolerant Network (VDTN). It is an application of the mobile DTN where nodes relay messages in the network using a store-carry-forward approach. Due to its high mobility, it suffers frequent disconnections and also congestions at nodes which leads to message drops. To minimize the rate of message drops and so optimize the probability of message delivery so that drivers are increasingly aware of the situation of the road, we propose a congestion control mechanism: Congestion Aware Spray and Wait (CASaW) protocol in this work so as to optimize the rate of message delivery to its destination and so increase the awareness of drivers in the vehicular environment thereby improve road safety. The results have shown that our proposition performed better than other classical VDTN protocols in terms of message delivery probability and rate of packet drops performance measures. We used the Opportunistic Networking Environment (ONE) simulator to implement the classical VDTN protocols: the PROPHET protocol, the Epidemic protocol, the MaxProp protocol and the Spray and Wait Protocol. The simulation scenarios shows a better performance for the congestion control mechanism we propose as it maintains a good message delivery rate as well as minimize the rate of packet losses thereby optimizing the chances of messages getting to their destinations and so improve road safety.