Refinement of distribution type for one-way delay in the global network

The paper has been dedicated to measuring the IP performance metrics (IPPM). Description of measurement methods for one-way delay using the synchronization system time is given. Synchronization time of measuring units is achieved by using the navigation system GLONASS signals with microsecond precision. Experiments to measure the one-way delay, jitter and available bandwidth carried via hardware and software complex called NetTestBox. A mathematical model of the cumulative distribution function (CDF) for a one-way network delay is proposed as a sum of exponential and truncated normal distributions with weights coefficients. This hypothesis tested for truthfulness on three network routes with the use of Pearson's test. The resulting distribution function allows to describe the behavior of one-way network delay on the real network routes over long time intervals. Conclusions are made about the dynamics of the global network characteristics over the past 10 years and their compliance with the requirements of real-time applications.