A Hybrid Type DTN Routing Method Using Delivery Predictability and Maximum Number of Replication
A Hybrid Type DTN Routing Method Using Delivery Predictability and Maximum Number of Replication
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DOI：
10.1109/waina.2015.30
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发表时间：
2015-03
期刊：
影响因子：
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通讯作者：
Tomoaki Miyakawa;A. Koyama
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文献类型：
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作者：
Tomoaki Miyakawa;A. Koyama
近年来，随着无线通信终端的普及，对可以随时随地使用的无线网络的需求正在增加。在一些无线网络中，通信环境已经变得具有长时间的通信延迟和链路断开的发生。这在目前的通信网络中是不应该的。在这种恶劣的通信环境下，容延迟/中断/断开网络（DTN）作为一种高可靠性的通信技术受到了人们的关注。在DTN中，每个节点将消息复制到遇到的节点，接收节点重复此过程，直到消息到达目的节点。然而，在DTN，这假设较差的通信环境，它是很难确定节点的复制。由于DTN中的节点通过路由方法控制复制，因此通信性能会因通信环境和路由方法的亲和力而变化。因此，DTN中的路由方法是DTN的重要研究对象。在本文中，我们提出了一种路由方法，结合喷雾和等待，先知。Spray and Wait限制复制次数，Prophet通过比较目的节点的交付可预测性来确定复制节点。我们的目标是通过结合这两种方法来提高消息的到达率。通过对真实的机器实验和仿真实验的评价，我们表明该方法比Spray and Wait和Prophet具有更高的消息到达率。
In recent years, by spread of wireless communication terminal, a demand for wireless networks which can use anywhere and anytime is increasing. In some of wireless networks, communication environments have became with long time communication delay and occurrence of link disconnection. It was not supposed in current communication networks. In such a worst communication environment, Delay / Disruption / Disconnection Tolerant Networks (DTN) are paid attention as a communication technology with high reliability. In DTN, each node replicates messages to an encountered node and the receiving node repeats this procedure until the messages reach destination nodes. However, in DTN which assumes poor communication environment, it is difficult to determine nodes for replication. Since nodes in DTN control the replication by a routing method, communication performance changes by affinity of communication environments and routing methods. From these reasons, the routing method is important research target in DTN. In this paper, we propose a routing method which combines Spray and Wait, and Prophet. The Spray and Wait restricts a number of replications and the Prophet determines a replicated node by comparing delivery predictability for destination node. We aim improvement of message arrival rate by combining these two methods. From evaluations of experiments of real machine and simulation, we show that the proposed method has high message arrival rate than Spray and Wait, and Prophet.