黄星河,李艾静,王海.DTN体系结构及关键技术研究综述[J].计算机科学,2018,45(12):19-23, 31
DTN体系结构及关键技术研究综述
Survey of DTN Architecture and Key Technologies
投稿时间:2018-03-25  修订日期:2018-07-18
DOI:10.11896/j.issn.1002-137X.2018.12.003
中文关键词:  延迟/中断容忍网络,体系结构,路由算法
英文关键词:Delay/Disruption tolerant network,Architecture,Routing algorithm
基金项目:本文受国家自然科学基金:基于Wi-Fi性能保证的LTE与Wi-Fi共存机制研究(61702545)资助
作者单位E-mail
黄星河 中国人民解放军陆军工程大学通信工程学院 南京210007 xidianxinghe@163.com 
李艾静 中国人民解放军陆军工程大学通信工程学院 南京210007
上海交通大学电子信息与电气工程学院 上海200240 
lishan_wh@126.com 
王海 中国人民解放军陆军工程大学通信工程学院 南京210007 hai_wang@189.cn 
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中文摘要:
      中断/延迟容忍网络(Disruption/ Delay Tolerant Network,DTN)是从Ad-hoc网络中抽象出来的一种全新的网络模型。与传统的无线移动自组织网络不同,该网络模型的应用场景具有高延迟、易中断等特点。高延迟、易中断的网络环境被称为受限网络。DTN作为一个针对受限网络的新兴研究领域,使用特殊的“存储-携带-转发”模式进行数据传递,以对抗受限网络中的高延迟和易中断带来的影响。它的发展将对未来军事战争、航天通信、抢险救灾等诸多场景提供更为可靠的通信保证。文中分析了DTN体系架构及其特性,研究了DTN路由协议并指出其适用的场景,最后总结了DTN研究中遇到的难点问题,并指出未来研究需要关注的方向。
英文摘要:
      Disruption / Delay tolerant network (DTN) is a totally new network model abstracted from MANET(Mobile Ad-hoc network).Different from traditional wireless mobile Ad-hoc networks,DTN is mainly used in high-delay and instable environment.As an emerging study area for restricted network environment,DTN uses a special mode “store-carry-forward” for data transfer,so as to combat the effects of higher latency and disruption in restricted networks.The development of DTN will provide a more reliable communication for scenarios such as future military wars,space communications,disaster relief and so on.In this paper,firstly,the architecture and characteristics of DTN were analyzed.Then the DTN routing protocol was studied from the aspects of the calculated amount,reliability and dependence on other node’s state information.Finally,some difficult problems on DTN were presented,and some research topics that might bring great progress to DTN systems were emphasized.
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