Metrological support of data transmission systems: the main problems and ways to solve them

Abstract

The issues of metrological support of packet data transmission networks are considered. The main problems of traceability in the transmission of measurement units of parameters of packet data transmission networks to measuring instruments are described. The results of the analysis of the fleet of measuring instruments traceable to the State primary standard of units of quantity of transmitted (received) information (data) and units of values of parameters of packet data transmission networks GET 200-2023 are presented. The cardinal differences between the methods of measuring the parameters of packet networks implemented using GET 200-2023 or measuring instruments and working standards are considered. Network parameters that determine their integrity and stability include bandwidth, packet transmission delay, packet transmission delay variation, and packet loss coefficient. It is established that when measuring the parameters of networks with operational traffic, the fractal and avalanche-like behavior of packet communication networks complicates the application of statistical mathematics and classical error theory, and measurements turn into an iterative research process. It is shown that the method of using rigid logic implemented in GET 200-2023 to obtain a synchro pulse associated with a logical event allows avoiding the problem of uncertainty of the time of a logical event, characteristic of measuring instruments based on   software logic. A number of issues of metrological support for packet networks are noted, which are currently not covered by legislative acts and do not have an adequate technical solution. Government agencies in the field of legislative metrology and all interested parties are invited to pay attention to this.