Method and system for correcting clock drift in one-way and two-way delay jitter measurement

Abstract

The present invention relates to a method and system for correcting clock drift deviation, which is used to obtain accurate time delay jitter in one-way and two-way time delay jitter measurement, including obtaining n groups of original data samples (i, d i ), where, i=1,2,…,n, i is the number of measurements, d i is the time delay; for n groups of raw data samples, linear fitting is carried out with the least squares method to obtain a linear equation y=a+bx, and the measurement times i of the n groups of raw data samples are substituted into the linear equation y=a+bx , then the fitting result y of the clock drift deviation of each measurement is obtained i =a+bi; the time delay d of the n groups of original data samples i Subtract the clock drift deviation y i , get the corrected measurement result as the delay jitter value: D i =D i -y i , (i=1,2,...,n); according to the delay jitter D i Make a line graph to reflect the change of delay jitter over time.

Description

technical field [0001] The invention relates to the field of computer network measurement, in particular to a method and system for correcting clock drift in time delay and jitter measurement technology. Background technique [0002] With the rapid development of Internet technology and network application services, users' demand for network resources has increased unprecedentedly, and the network has become more and more complex. The ever-increasing number of network users and applications will lead to a heavy burden of network traffic and overloading of network equipment, resulting in a decrease in network performance. Therefore, it is necessary to extract and analyze the performance indicators of the network, and improve and improve the performance of the network according to the analysis results. Network performance measurement came into being. Discover network bottlenecks, optimize network configuration, and further discover possible dangers in the network, manage net...

AI Technical Summary

Problems solved by technology

[0014] 2) Effect of clock drift

Under the influence of clock drift, traditional delay and jitter measurement methods will get wrong measurement results, which will lead to wrong judgments of network quality by measurement personnel, and further lead to wrong network management and control strategies, further deteriorating network performance

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