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中文摘要：
以排队分析和网络仿真为手段定量分析了在不同路径长度和流量负载条件下的最小时延可测性，发现约50个探测包即可有很大概率测量到有10跳长路径的最小时延．通过回归分析，建立了反映探测包数量与路径长度关系的线性方程．在互联网的实际测量验证了该方法是有效的．
英文摘要：
By means of queuing analysis and network simulation, the measurability of end-to-end minimum packet delay has been quantificationally analyzed, and it was found that 50 packets was more than enough to measure the minimum delay of a 10 hops long path with very great probability. At last, a linear equation, which describes the relation between probe packets number and the path length, was built by the way of regression analysis. Actual measurements in the Internet revealed the validation of the method.
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