MODEL OF SERVICING OF REQUESTS WITH PRECEDENCES AND PREEMPTION IN THE LINK OF THE MULTISERVICE COMMUNICATION NETWORK
The tasks of protecting against overloads, balancing losses and ensuring priority servicing of requests (calls) for infocommunication services in a multiservice communication network are currently of great importance. This task becomes especially acute in the conditions of crisis situations and emergencies, as well as equipment failures due to their ultimate technical and operational reliability and various destabilizing influences on it. This article is devoted to the construction of an analytical model for servicing multiservice traffic in the link of a multiservice communication network that implements the discipline of servicing applications with priorities and interruption. Analysis of the process of receipt of applications and the transfer of information is carried out at the level of establishing connections. The flows arriving at the input of the link are Poisson flows, and the service times of applications have an exponential distribution and are independent of each other. In this work is given description of the system in the Kendall-Basharin notation, presents its state space and the corresponding transition diagram of a random process, the interaction algorithm of the call flow with the queuing system are considered. Calculated expressions are obtained for the quality of service characteristics of the incoming calls flows and conclusions are drawn on the application of the developed model.