Дослідження бездротового централізованого мережевого кластера з реалізацією сеансів інфокомунікаційної взаємодії в незалежних віртуальних сегментах

Abstract

The growing trend of information traffic in centralized wireless communication systems clearly proves the need for the evolution of generations of mobile communications, in particular, the transition from 4G to 5G. According to the specification, the latter should be implemented flexible services for traffic management, improving the efficiency of which is an urgent task. The article presents a mathematical model of the process of functioning of a wireless centralized network cluster, sessions of infocommunication interaction in which are implemented in independent virtual segments of the information space of the base station. The researched process is described by the Markov queuing system, the inputs of the conveyors of which are coordinated with the independent flows of incoming requests from the end devices. It is taken into account that for the main-tenance of each such flow in the information environment of the base station is reserved the appropriate amount of system resources - the so-called virtual segment, the weight of which depends on the priority of the corresponding flow. The distri-bution of a single amount of system resources of the base station between the weighted virtual segments is carried out by a specialized management service dynamically. Within the framework of the proposed mathematical apparatus, an algorithm for forced termination of an active session of infocommunication interaction in an overloaded virtual segment and a service for managing the distribution of released system resources between the rest of virtual segments taking into account the degree of their overload. The simulation results showed that the functional mechanism of forced termination of infocommu-nication sessions and the system resource allocation service proposed by the authors allow the 5G base station to continue accepting new incoming requests despite the congestion of individual virtual network segments. Experiments have shown that the proposed software tools are effectively adapted to the available publicly available volume of system resources and the way to allocate within it the guaranteed amount of system resources for individual virtual network segments.