Improved method of constructing two-sided boundaries of reliability indicators of information and communication network equipment with limited output information

Authors

  • Igor Gyrenko Institute of Special Communication and Information Protection of the National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv, Ukraine https://orcid.org/0000-0002-7688-7926
  • Iryna Kononova Institute of Special Communication and Information Protection of the National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Ukraine https://orcid.org/0000-0001-6945-0323
  • Yurii Shchyhol Institute of Special Communication and Information Protection of the National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv, Ukraine https://orcid.org/0000-0002-7621-0616

DOI:

https://doi.org/10.20535/2411-1031.2023.11.1.283811

Keywords:

information and communication networks, reliability indicators, a priori uncertainty, disruption, failure

Abstract

When researching issues of ensuring the specified reliability of information and communication network equipment, an important direction is the development of effective methods for assessing the intensity of failures and their impact on the processes of network functioning. Solving the problems of assessment and ensuring reliability may face the uncertainty of the source information due to the limited possibility of obtaining a large number of studies of random variables that determine the reliability, maintainability and process of system functioning, which are necessary to assess the degree of coincidence of theoretical and statistical distributions. Usually, only the mathematical expectation and variance of the random variable can be accurately determined from test results or operational data.The purpose of the study is to develop an improved method for assessing the reliability of information and communication network equipment in conditions where individual distribution functions of the initial random variables are unknown, and only their first and second initial moments are determined. The article presents an improved analytical method, which is used to obtain calculation ratios necessary for the creation of two-way evaluations of the reliability indicators of the communication equipment of the information and communication network. In this method, persistent disruption and failures under conditions of a priori uncertainty are taken into account. The main idea of the proposed improved method is to single out typical functionals that reflect the main reliability indicators of communication equipment with time and (or) structural redundancy. These functionals will be calculated on the complete initial information and further used to obtain accurate lower and upper bounds at known initial moments of the distribution of initial random variables at the first stage. At the second stage, bilateral estimates of reliability indicators will be obtained by applying the limit values of the corresponding functionals. It has been found that failures can significantly degrade reliability performance, even when structural and temporal redundancy is used.

Author Biographies

Igor Gyrenko, Institute of Special Communication and Information Protection of the National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv

candidate of technical sciences, deputy chief of the Institute for Academic Affairs

Iryna Kononova, Institute of Special Communication and Information Protection of the National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»

candidate of technical sciences, associate professor, associate professor of Special department No. 3 

Yurii Shchyhol, Institute of Special Communication and Information Protection of the National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv

сandidate of juridical sciences, associate professor of Special department No. 1

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Published

2023-06-29

How to Cite

Gyrenko, I., Kononova, I., & Shchyhol, Y. (2023). Improved method of constructing two-sided boundaries of reliability indicators of information and communication network equipment with limited output information. Collection "Information Technology and Security", 11(1), 84–95. https://doi.org/10.20535/2411-1031.2023.11.1.283811

Issue

Vol. 11 No. 1 (2023)

Section

ELECTRONIC COMMUNICATION SYSTEMS AND NETWORKS

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