Nenov A. Methods and models estimation of telecommunication networks dependability

1. Object of research: The process of analyzing and evaluating the dependability of telecommunication networks during their design and operation. Objective: Improving the reliability and efficiency of evaluating the dependability of telecommunication networks during their design and operation by solving complex scientific and technical issues related to the study, improvement and development of methods and models for assessing the dependability of telecommunication networks. Methods: Methods and principles of systematic approach, reliability theory, graph theory, stochastic processes, methods of algorithmic design. Theoretical and practical results, and novelty: an analytical method to assess the structural reliability of telecommunication networks for structural characteristics first proposed, the using of this method allows to perform an assessment of the dependability of telecommunication networks in terms of the variability of its structure; model of a random graph G (n, L, p) improved, the use of this model allows to take into account the structural dynamics and dependability characteristics of telecommunication networks in the analysis of structural dependability; method for estimating the number of paths in a random graph with given structural characteristics improved that provides a more accurate assessment of structural dependability of telecommunication networks by structural characteristics; recommendations for the effective application of the model G (n, L, p) and the method for evaluating the dependability of telecommunication networks for structural characteristics proposed; further development are the method of the identification and classification of factors that determine the dependability of telecommunications networks, enabling the systematic consideration of these factors. Degree of implementation: using the developed software was the estimation of structural dependability fragment relay communication network of SE "Odessa regional radio broadcasting center," which was used in the modernization of the network stations Odessa-Ismail; to quickly obtain the number of paths in telecommunication networks indeterminate structure dimensions from 10 to 100 units built kit nomograms; the work used in the research work of the Training and Research Institute of refrigeration, cryotechnology and ecoenergetics them. V.S. Martynovsky at Odessa National Academy of Food Technologies. Industry - Engineering, Telecommunications.