文档介绍：
DTN 中基于公平丢包的拥塞控制研究
王梦杰,谢东亮**
(北京邮电大学网络与交换技术国家重点实验室北京 100876)
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摘要:延迟容忍网络(Delay works,DTN)采用“存储-携带-转发”的方式进行路由,
依靠节点间的机会接触转发数据。当面对存储资源的持续性需求,而保管者本身的缓存又不
能得到释放时,势必造成某些活跃节点缓存资源的耗尽,此时就会导致网络的拥塞。为了解
决这一问题,本文建立了一种社会性多副本延迟容忍网络模型,并提出了一种基于公平丢包
的拥塞控制机制,试图在保证数据包级公平性的基础上缓解拥塞。最后,在 ONE 仿真平台
进行仿真验证,结果表明该机制可以更好的提升网络吞吐量、提高数据交付率。
关键词:延迟容忍网络;拥塞控制;网络模型;社会性;公平性
中图分类号:
Research on Congestion Control based on Fair Drop in DTN
WANG Mengjie, XIE Dongliang
(State Key Laboratory work and Switching, Beijing University of Posts and
munications, 100876)
Abstract: Delay works (DTNs) routing is based on "storage-carry-forward" approach, and
municate with each other based upon intermittent or opportunistic faced
with the ongoing demand of storage and custodians itself can't release the cache, it will cause some
custodians's cache resource depletion. This will lead work congestion. In order to solve this
problem, this paper established a social delay work model, and puts forward a congestion
control mechanism based on Fair Drop duplicate. Extensive simulations show that the proposed Fair
Drop algorithm can work performance greatly.
Key words: Delay works; Congestion Control; Network Model; Sociality; Fairness
0 引言
延迟容忍网络(DTN)源自于美军卫星通信,其目的是解决具有长延迟、高错误率、资
源受限、连接频繁中断等特点的受限网络中的通信问题,其特征是利用“存储-携带-转发”的
方式实现端到端的有效数据传输,对于国土资源、气象、航空航天、深洋、国防