延迟容忍网络是一种新型的自组织网络。由于其高误码率、长延迟以及动态的拓扑结构，导致网络中难以维持稳定的端到端的路径。路由算法是延迟容忍网络中研究成果最丰盛的领域，研究者们也取得了许多具有代表性的研究成果。在网络中，移动模型控制着节点的运动方式，确定节点移动的方向、速度，包括在某一点停留的时间。然而，在通常情况下，研究人员往往只在单一的移动模型下评估所提出的新的路由算法，而忽视该算法在其他移动模型下的表现。文中从传输成功率、平均延迟和路由开销三个方面重点研究不同的移动模型对路由算法的影响。实验采用ONE模拟器，仿真了节点在南京市特定区域上的移动情形，得出了路由算法在不同移动模型下的性能表现折线图。结果表明：移动模型对路由算法有着巨大的影响。%DTN ( Delay Tolerant Network) is a new type of mobile Ad Hoc network. Due to its high bit-error rate,long delay and dy-namic topology,there is barely stable end-to-end path in those networks. Routing algorithm is the most abundant area of DTN and many representative researches have been achieved. The mobility model controls the node movement pattern,determining the direction,speed and the rest time in DTNs. However,researchers usually tend to evaluate their new routing protocols under single mobility model,ignoring the performance under other models. In this paper,focus on assessing the impact of mobility model on some distinguish routing protocols in terms of delivery probability,average latency and overhead ratio. Use the ONE to simulate the scenario where nodes move in certain ar-ea in Nanjing. The line charts generated show the performance of the routing algorithm under different mobility models. The simulation shows that the mobility has a great impact on the routing algorithm.
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