延迟／中断容忍网络发展研究

延迟／中断容忍网络（DTN）具有长延时、某一时刻不存在端到端链路或者链路频繁中断等特点，作为一种新型体系结构，近年来受到广泛关注与研究。介绍了DTN网络的研究现状，分析了其体系结构特点，详细描述了目前DTN关键技术包括网络协议、路由与安全机制方面的研究进展及面临的挑战，最后介绍了DTN在深空探测、军事通信等领域的应用，指出了DTN在未来通信网络发展中的作用。

Study on Development of Delay/Disruption-tolerant Network

As an emerging network architecture, Delay/Disruption Tolerant Network （DTN） is greatly different from the traditional network model. It is characteristic of long delay, frequent disruptions and no end-to-end path etc. Firstly, investigations in this field are summarized, and the architecture of DTN is analyzed. Then, researches and solutions for network protocol, routing and security mechanism are described with some open and challenging issues presented. Lastly, applications of DTN in fields such as space networking, military tactical networking etc are introduced to show the importance of DTN in future communication networks.