Abstract
作为一种新型的体系结构,容延容断网络(delay/disruption tolerant network,简称DTN)近年来得到了广泛的研究与应用.由于其面临的应用环境极为特殊,传统网络的路由协议无法适用于DTN,各种针对DTN的路由技术相继提了出来.在对DTN路由进行形式化分析以后,提出了路由技术的分类方法,然后着重分析并比较了当前一些较为重要的路由技术的核心路由机制和特点.最后总结DTN路由技术的研究现状以及存在的问题,指出未来路由研究的重点.;In the recent years, as a new emerging network architecture, Delay/Disruption Tolerant Networks (DTNs) have received extensive attention and are widely investigated. Since the major application scenarios of DTN are extremely particular routing protocols designed for the traditional networks are not suitable for DTN. Therefore, numerous routing protocols have been proposed for DTN. In this paper, the formulation issues of DTN routing protocols are firstly studied, and the classification concerns are then proposed for those protocols. Thereafter, this paper focuses on analyzing and comparing existing representative DTN routing protocols. Finally, current research status and the existing problems about DTN routing protocols are summarized, the key issues and future trends in DTN routing are pointed out.
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