容迟网络中基于复制策略的单播路由算法研究

摘要

容迟/容延网络(Delay Tolerant Network/DTN)泛指由于节点移动、能量管理、调度等原因而出现频繁中断、甚至长时间处于中断状态的一类网络.针对DTN具有的时延高、割裂频繁、节点能量受限、以及节点移动性等特点,通过对DTN中基于复制策略的单播路由策略进行分类和比较,提出了如何优化DTN单播路由算法、提高网络传输率的建议.%Delay/Disruption Tolerant Network (DTN) are intermittently-connected networks that may suffer from frequent and long lasting disconnection due to various reasons such as mobility, power management, scheduling, etc. researchers face several challenges in DTN such as high end-to-end delay, inter-contact interval, energy limit of nodes and node mobility, etc. Characteristics and performance comparison of duplication-based unicast routing strategy are presented in 'this thesis. Suggestions of how to optimize unicast routing algorithm to improve the network transmission rate are proposed.