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中文摘要：
延期容忍的网络(DTN ) 是由于节点的稀少的分发经历经常、长持续时间的分区的网络的一个类。它为更好的可伸缩性有宽广前景到新网络应用程序，差错容忍，并且高效。在 DTN，路径失败经常发生，因此消息转移不是可靠的。有时，甚至在一个很短的时期改变路由被要求，导致传播延期和接收延期。然而，传统的网络的一些著名假设在 DTN 不再是真的。在这份报纸，我们在 DTN 学习路径失败的问题。当路径显得完全正常时，在 DTN 的路径失败过程被描述，完全失败了并且部分失败了。传统的途径没基于使用精确已知的网络动力学说明消息损失。产生冗余性的容忍的计划是使用编码的檫除和完整的复制的一个新差错。这能极大地减少路径失败率。最后，一个交通 DTN 模型被分析。结果在 omparison 揭示我们的计划的优势到另外的现在的计划。
英文摘要：
Delay Tolerant Network （DTN） is a class of networks that experience frequent and long-duration partitions due to sparse distribution of nodes. It has a broad prospect to new network applications for a better sealability, fault-tolerant, and high performance. In DTNs, path failure occurs frequently, so message transfer is not reliable. Sometimes it is required to change routing even in a very short period, resulting in transmission delay and reception delay. However, some well-known assumptions of traditional networks are no longer true in DTNs. In this paper, we study the problem of path failures in DTNs. The path failure process in DTNs is described when the path appears completely normal, completely failed and partially failed. Traditional approaches based on using precisely known network dynamics have not accounted for message losses. A new fault tolerant scheme to generate redundancy is to use erasure coding and full replication. This can greatly decrease the path failure rate. At last, a traffic DTN model is analyzed. Results reveal the superiority of our scheme in comparison to other present schemes.
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