Development of a fuzzy temporal model to describe the influence of external environment parameters on the LTE standard communication systems

DOI №______

Abstract

The considered communication system is presented as a hierarchy in terms of the detail of the system in question. The described interdependence of the parameters of systems of different levels makes it possible to consider the effect on the system as a whole of certain changes that occur in any of the subsystems. In general, it can be said that changes in this subsystem occur due to some factors affecting the value of the subsystem parameters, and these actions can affect any system of any level, which generally leads to changes in the whole system. The presentation of external destabilizing factors in the form of aggregated indicators affecting the parameters and quality characteristics of signals is proposed. As the main ones, external impacts were chosen as demographic parameters, territorial parameters and a generalized indicator, which includes many events affecting the system. Changes that entail the impact of external factors on the subsystem may be some actions to modernize this subnet or vice versa — the failure of any element of the subsystem. A fuzzy temporal model is presented, which describes the influence of the main parameters of the environment on the performance of complexes and communication systems of the LTE standard. Such a description of the functioning of the radio system allows you to predict the state of the system and select the appropriate control solutions to improve the predicted situation. The environmental parameters and the state of the system can describe some fuzzy situation, therefore, based on a set of factors collected over a certain observation interval of one or several time series, it is possible to determine the most common situations and create a base of reference situations.

Keуwords: temporal model; LTE; destabilizing factors; external environment.

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