QUALITY OF SERVICE PROVIDING OF INFORMATIONAL SYSTEMS ON A BASE OF A CONTROLLED PROCESS LOCAL MODEL

O.G. Slavko, P.P. Kostenko

The problem of quality of service in information systems and networks is examined. It is shown that a problem of parametric identification of mathematical model of data transferring process in case of its nonstationary and uncertainty is occur in a task of quality of service providing. Indicated that method of the controlled process local model synthesis can be applied to the transfer of network data, mathematical models of which are described by ordinary differential equations. The improvement of method of quality of service providing with usage of a controlled process local model of the data in real time while preventing congestions. The proposed method allows to adjust the parameters of the algorithms of random early detection in case of parametric uncertainty and nonstationarity of the data transfer process on a base of the equivalent of unknown input signals.

Key words: data transfer process, процесс передачи данных, quality of service, congestion avoidance.