新的基于逐跳时间标签的链路利用率测量方法  

An Approach to Link Utilization Measurement Based on Per-Hop Time Stamp

作　　者：崔毅东[1] 林宇[1] 徐雅静[1] 徐惠民[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《北京邮电大学学报》2006年第2期5-9,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(90204003)

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.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.

关 键 词：时间戳 链路利用率 时钟扭曲 滑动窗口 

分 类 号：TN929.53[电子电信—通信与信息系统]