| 用马尔可夫调制的泊松过程近似多分形突发流量研究 |
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| 引用本文： | 纪其进.用马尔可夫调制的泊松过程近似多分形突发流量研究[J].东南大学学报,2004,20(4):436-441. |
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| 作者姓名： | 纪其进 |
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| 作者单位： | 东南大学计算机网络和信息集成技术教育部重点实验室，南京210096 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 研究了用马尔可夫调制的泊松过程(MMPP)对Internet多分形流量突发行为进行近似建模的能力. MMPP可用于描述适当时间尺度范围内流量的变化以及相关性, 而且它可作为排队系统输入过程得到分析结果. 描述了刻画突发流量行为的重要统计量, 在此基础上给出了一个基于矩的MMPP参数估计方法. 除了对MMPP进行拟合优度检测以外, 本文通过将MMPP的样本过程和实际流量记录输入到排队系统模型中比较其输出结果来研究MMPP对排队性能的预测能力. 数值和仿真实验表明, MMPP能够较好地用于对多分形流量近似建模, 即可以准确地预测网络结点的排队性能.
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| 关 键 词： | 多分形流量 马尔可夫调制的泊松过程(MMPP) 排队时延 分组丢失率 |
On approximating multifractal traffic burstiness with Markov modulated Poisson processes |
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| Ji Qjin.On approximating multifractal traffic burstiness with Markov modulated Poisson processes[J].Journal of Southeast University(English Edition),2004,20(4):436-441. |
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| Authors: | Ji Qjin |
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| Abstract: | We investigate the approximating capability of Markov modulated Poisson processes (MMPP) for modeling multifractal Internet traffic. The choice of MMPP is motivated by its ability to capture the variability and correlation in moderate time scales while being analytically tractable. Important statistics of traffic burstiness are described and a customized moment-based fitting procedure of MMPP to traffic traces is presented. Our methodology of doing this is to examine whether the MMPP can be used to predict the performance of a queue to which MMPP sample paths and measured traffic traces are fed for comparison respectively, in addition to the goodness-of-fit test of MMPP. Numerical results and simulations show that the fitted MMPP can approximate multifractal traffic quite well, i.e. accurately predict the queueing performance. |
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| Keywords: | multifractal traffic Markov modulated Poisson processes queueing delay packet loss rate |
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