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Characterizing network elements and paths using packet loss behavior.

机译:使用数据包丢失行为来表征网络元素和路径。

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摘要

This dissertation explores problems that arise in characterizing network elements and network paths. Characterizing network elements and paths can be valuable for network performance improvement, and network simulation and modeling. Three broad kinds of characterization are explored in this dissertation: (a) characterizing buffer space; (b) characterizing packet loss models; and (c) differentiating packet loss types.; In characterizing buffer space of a single network element, two methods are studied: a probabilistic method, and a heuristic method. The probabilistic method characterizes buffer space by making use of stochastic properties of network traffic. The heuristic method makes use of the queuing behavior of the network element. Both methods are evaluated in simulation and are shown to be effective.; In characterizing buffer space and packet loss models of the bottleneck link along an end-to-end network path, this dissertation develops a method called loss pairs. This method is evaluated both in simulation and in experiments conducted over an emulated multi-hop network environment, and shown to be effective given typical assumptions about path properties.; Finally, by making use of the loss pairs method, this dissertation develops a method for end-to-end differentiation of losses in a mixed wired/wireless environment. This method attributes a loss to its most likely cause: congestion or wireless channel fading. Using simulation it is shown that this differentiation method works well, and is superior to a traditional alternative method.
机译:本文探讨了表征网络元素和网络路径时出现的问题。表征网络元素和路径对于网络性能改善以及网络仿真和建模非常有价值。本文探讨了三种广泛的表征方法:(a)表征缓冲空间; (b)表征丢包模型; (c)区分丢包类型。在表征单个网络元素的缓冲区空间时,研究了两种方法:概率方法和启发式方法。概率方法通过利用网络流量的随机属性来表征缓冲区空间。启发式方法利用了网络元素的排队行为。两种方法都在仿真中进行了评估,并证明是有效的。在表征沿端到端网络路径的瓶颈链路的缓冲区空间和数据包丢失模型时,本文开发了一种称为“损失对”的方法。在模拟多跳网络环境下进行的仿真和实验中,都对该方法进行了评估,并且在给出有关路径属性的典型假设的情况下,该方法是有效的。最后,通过使用损耗对方法,本文提出了一种在有线/无线混合环境中对损耗进行端到端微分的方法。这种方法将损失归因于其最可能的原因:拥塞或无线信道衰落。通过仿真表明,这种区分方法效果很好,并且优于传统的替代方法。

著录项

  • 作者

    Liu, Jun.;

  • 作者单位

    Boston University.;

  • 授予单位 Boston University.;
  • 学科 Computer Science.
  • 学位 Ph.D.
  • 年度 2003
  • 页码 152 p.
  • 总页数 152
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术、计算机技术;
  • 关键词

  • 入库时间 2022-08-17 11:44:48

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