延迟中断容忍网络路由技术综述

A Survey on Routing Techniques in Delay/Disruption Tolerant Network

延迟中断容忍网络(DTN)是针对极端环境下无稳定端到端连接应用场景的一种网络架构。首先分析DTN逐跳传输、能力受限、场景复杂等主要网络特性。然后对比分析了转发、复制、效用、社会、编码五种路由要素,及其代表性DTN路由算法的性能。最后对典型路由算法进行性能对比,并指出如何对DTN路由算法进行评估和选择。通过技术综述为DTN路由算法研究提供参考。

Delay/Disruption Tolerant Network(DTN)is a network framework for the scenarios where constant end-to-end paths are rarely available.We analyze the major challenges of routing in DTN,including forwarding“Hop-by-Hop”,limitation of nodes and complex scenarios.Then we compare five factors of DTN routing algorithms,which are forwarding,replication,utility,sociality and coding.Typical routing algorithms and their performances are present.Finally major routing algorithms in DTN are summarized and compared.Furthermore,the evaluation and selection of routing algorithms in DTN are provided.This paper is devoted to providing insights on routing algorithms in DTN.