| 新的基于逐跳时间标签的链路利用率测量方法 |
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| 引用本文： | 崔毅东,林宇,徐雅静,徐惠民.新的基于逐跳时间标签的链路利用率测量方法[J].北京邮电大学学报,2006,29(2):5-9. |
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| 作者姓名： | 崔毅东 林宇 徐雅静 徐惠民 |
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| 作者单位： | 北京邮电大学,电信工程学院,北京,100876;北京邮电大学,电信工程学院,北京,100876;北京邮电大学,电信工程学院,北京,100876;北京邮电大学,电信工程学院,北京,100876 |
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| 摘 要： | 提出了一种新的IP(Internet protocol)网络链路利用率测量方法. 探测源端主动向网络发送带有IP报头时间戳选项的探测报文，逐跳记录路由器的当前时间. 多个探测结果通过链路利用率统计算法的处理，消除探测分组的处理时延、传播时延以及路由器时钟扭曲带来的偏差，得到探测分组的单跳排队时延，进而量化并使用滑动窗口得到链路的利用率. 仿真验证了该方法的正确性.
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| 关 键 词： | 时间戳 链路利用率 时钟扭曲 滑动窗口 |
| 文章编号： | 1007-5321（2006）02-0005-05 |
| 收稿时间： | 2005-03-01 |
| 修稿时间： | 2005年3月1日 |
An Approach to Link Utilization Measurement Based on Per-Hop Time Stamp |
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| CUI Yi-dong,LIN Yu,XU Ya-jing,XU Hui-min.An Approach to Link Utilization Measurement Based on Per-Hop Time Stamp[J].Journal of Beijing University of Posts and Telecommunications,2006,29(2):5-9. |
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| Authors: | CUI Yi-dong LIN Yu XU Ya-jing XU Hui-min |
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| Affiliation: | School of Telecommunication Engineering, Beijing University of Posts and Telecommunications |
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| Abstract: | An approach to link utilization measurement was proposed: The source sends probe packets which have the time stamp options being set.The current router time is recorded in the packets.Since the packet processing delay,propagation delay and the impaction of the router clock skew greatly affect the probing results,the probing results are processed with the link utilization statistic(LUS) algorithm and the queuing delay of each probing packet is therefore obtained.When quantized and smoothed with the slide window,the queuing delay is finally transformed into link utilization.This approach is verified through simulation. |
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| Keywords: | time stamp link utilization clock skew slide window |
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