Measuring, Analyzing and Modeling of RTT Delay for Internet-Based Networked Control Systems

doi:10.7652/xjtuxb201602005

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Measuring, Analyzing and Modeling of RTT Delay for Internet-Based Networked Control Systems

更新时间：2025-07-09

- Measuring, Analyzing and Modeling of RTT Delay for Internet-Based Networked Control Systems
- Vol. 50, Issue 2, Pages: 26-32(2016)
- 作者机构：
  
  吉林大学计算机科学与技术学院,长春,130022
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201602005
  CLC： TP393
- Online First：10 February 2016，
  
  Published：2016
- 稿件说明：
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Measuring, Analyzing and Modeling of RTT Delay for Internet-Based Networked Control Systems[J]. 2016, 50(2): 26-32.
DOI：

Measuring, Analyzing and Modeling of RTT Delay for Internet-Based Networked Control Systems[J]. 2016, 50(2): 26-32. DOI： 10.7652/xjtuxb201602005.

摘要

为了得到准确地描述互联网远程实时控制系统时延的分布模型

对短时间窗口往返时延(round-trip time

RTT)进行了测量、统计和分析

提出了一种短时窗RTT时延混合威布尔(Weibull)模型。该混合模型满足网络控制系统的实时性需求

具备对短期非平稳的短时间窗口RTT时延样本随机聚类特性的描述能力

并利用期望最大化(expectation-maximization

EM)算法估计模型的混合分量密度及混合分量模型参数。实验结果表明:使用二重混合威布尔模型建模短时窗RTT时延样本能够很好地反映时延的随机聚类特性

K-S检验显示该模型对样本匹配效果评价可接受

该模型为互联网远程控制系统的优化控制提供了一种更准确的参考模型。

Abstract

A mixture Weibull model for short window RTT delay is proposed to obtain an accurate model to describe the delay distribution of real-time Internet remote control systems by measuring and analyzing short window round-trip delay(RTT). The model meets real-time requirements of network control systems

has the ability to describe the randomized clustering feature for non-stationary short window RTT delay

and uses the expectation-maximization(EM)algorithm to estimate component densities and parameters of the model. Experimental results confirm the efficiency and precision of 2-mixture Weibull model for the short window RTT delay

and a K-S test shows an acceptable result that the model matches the sample. It is concluded that the model provides a more accurate reference model for optimal control of Internet real-time remote control systems.

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Keywords

references

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