Improvement of the probability model of a typical fragment of the departmental digital telecommunications network of the SESU

Andrew Feshchenko

National University of Civil Defence of Ukraine

http://orcid.org/0000-0002-4869-6428

Alexander Zakora

National University of Civil Defence of Ukraine

http://orcid.org/0000-0001-9042-6838

Larisa Borisova

National University of Civil Defence of Ukraine

http://orcid.org/0000-0001-6554-1949

DOI: https://doi.org/10.52363/2524-0226-2022-35-9

Keywords: digital telecommunication network, reliability, probability of trouble-free operation, emergency situation

Аnnotation

The analysis of working conditions of constituent elements, hierarchy of structure of departmental digital telecommunication network allows to consider it as set of standard fragments which are executed without reservation, and with repeated reservation of the central, regional, regional knots connected by communication channels for which block diagrams are developed. reliability and probabilistic models taking into account the standardized operating parameters of these elements. It is shown that the required reliability of the telecommunication network is achieved by increasing the reliability of its elements and multiplicity of redundancy, with uncertain influence on the maintenance of equipment, so studies of the dependence of the probability of good condition of the redundancy of the corresponding network nodes and communication channels and are given in the form of analytical and graphic materials of statistical mathematical modeling. As a result of research it is established that in order to reduce the requirements for the reliability of the elements of a typical fragment of the departmental digital telecommunications network it is enough to use structural separate double redundancy of nodes of different hierarchies in the presence of triple redundancy. Research data are useful and important to increase the probability of good condition of a typical fragment of the departmental telecommunications network as at the design stage by choosing the structure and multiplicity of redundancy nodes not only at the central level but also at regional and district level nodes. maintenance of nodes and communication channels depending on the ratio of the period of preventive maintenance to the time of operation to failure.

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