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Parallel discrete event simulation of large scale wireless ad-hoc networks.

机译：大规模无线自组织网络的并行离散事件模拟。

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摘要

Discrete-event simulation is among the most commonly used techniques to evaluate protocols and architectures for mobile ad hoc networks. However, detailed simulation of large wireless networks is computationally intensive due to the necessity of simulating the interference among multiple simultaneous transmissions in the radio channel. The first result of this work is establishing necessity of simulating physical layer factors such as signal reception, path loss, fading, interference and noise computation, and preamble length. It is shown that such factors are relevant to the performance evaluations of higher layer protocols. The second part of this work investigates a number of techniques to optimize the performance of such simulations. The specific techniques that have been used include geographic partitioning using the effects of signal propagation on basic simulator performance as well as the parallel optimizations needed to execute the simulation using a synchronous conservative parallel simulation algorithm.{09}The parallel optimizations primarily consist of extracting lookahead necessary for the conservative simulation algorithm from the IEEE 802.11 MAC protocol and radio models. The optimizations were implemented in GloMoSim, a parallel simulator for mobile ad hoc networks, and a set of experiments were performed to measure their impact on the execution time of the simulation.
机译：离散事件仿真是评估移动自组织网络协议和体系结构的最常用技术之一。但是，由于必须模拟无线电信道中多个同时传输之间的干扰，因此大型无线网络的详细模拟需要大量计算。这项工作的第一个结果是确定了模拟物理层因素的必要性，例如信号接收，路径损耗，衰落，干扰和噪声计算以及前同步码长度。结果表明，这些因素与高层协议的性能评估有关。这项工作的第二部分研究了许多优化此类模拟性能的技术。已使用的特定技术包括使用信号传播对基本仿真器性能的影响进行地理划分，以及使用同步保守并行仿真算法执行仿真所需的并行优化。{09}并行优化主要包括提取先行记录IEEE 802.11 MAC协议和无线电模型中的保守仿真算法所必需的。优化是在GloMoSim（用于移动ad hoc网络的并行模拟器）中实现的，并进行了一组实验以衡量它们对模拟执行时间的影响。

著录项

  • 作者

    Martin, Jay Matthew.;

  • 作者单位

    University of California, Los Angeles.;

  • 授予单位 University of California, Los Angeles.;
  • 学科 Computer Science.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 171 p.
  • 总页数 171
  • 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

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