The thesis is dedicated to the solution of an urgent scientific task, its essence being the development of a methodology for creating protected specialized networks, aimed at increasing the efficiency of industrial services provision.
Industrial facilities of the heavy and metallurgical industries constantly accumulate huge volumes of sensitive data about their employees, customers, production, scientific research, solutions and financial outcomes. Obtaining financial results, sensitive data by rivals or cyber criminals may cause enterprises’ irreversible financial and reputational losses.
The main means of counteracting information and cyber security threats are a complex of administrative disposals and introduction of infrastructure protection from external unauthorized access and illegal sensitive data takeover.
As a result of analyzing cyber attacks for the last five years, most attacks have accounted for the crucial infrastructure, energy, transport, logistics enterprises.
The starting point of the research is the analysis of the functioning industrial services and studying advanced technologies opportunities to create a unified specialized information and industrial network, able to satisfy the business and industry needs at the level of the network accessibility and unauthorized access security.
A considerable impact of the information sphere on the social progress specifies the necessity of closer attention to expand and introduce private industrial networks for the purpose of increasing the efficiency of functioning of specialized information and industrial networks that may be used in the coal and metallurgical industries.
Development of such a methodology will make it possible to create a flexible system, meeting needs of the business, related to industrial production automation and information security.
Due to the system of network elements authenticity, access to the IoT platform will be restricted, making it possible to minimize risks of hackers’ attack isothermic methods via a smart-gadget.
While considering model systems of constructing and administering industrial networks infrastructure, four separate levels are defined that are combined into a unified information and communication industrial infrastructure.
The analysis of the functioning models of industrial networks has resulted in detecting considerable failures, caused by the signal propagation environment. That is why there emerges the need to develop a universal methodology of creating specialized protected systems, improving the efficiency of providing industrial services, based on theoretical and practical solutions, using electromagnetic emission under special conditions.
To develop such a methodology, special environment is analyzed and mathematical schemes of electromagnetic emission spread in mines are calculated. The mathematical calculations result in the conclusion that radio waves spread under special conditions is radically different from radio waves spread on the Earth surface. As a result, radio waves spread will occur with multi-ray characteristics, with relay or Rician fading. Following the interference, diffraction losses occur due to shading.
In modern mines a considerable level of electrical and magnetic interference is caused by the functioning electrical equipment in underground mining workings. To tackle the issue of electrical and magnetic interference impact, it is necessary to conduct separate research with a proper list of the used equipment.
The calculations analysis has proven that a signal power will differ depending on the antenna height and location. The signal can spread in a line pattern, be echoed or be deflected. The reception quality will depend on several factors. In a similar way the signal reception can be influenced by unwanted signals from other sources that can use the same or neighboring frequencies.
The research outcomes have shown that while planning a specialized radio access network it is necessary to take into account additional indices of signal fading for the purpose of organizing reliable communication channels under the special conditions of electrical and magnetic waves spread. The theoretical experimental research of electrical and magnetic field spread in various frequency ranges in rocks has shown the possibility of distant transmission of signals, exceeding 200 m, in "clear" underground mining workings and more than 1 km with the beam antenna application.
Based on the outcomes of mathematical assessment of radio waves spread, two scenarios of developing a protected private industrial network in a mine have been suggested. To meet the network accessibility demands, in case of an incident in the underground mine part, the methodology of reserving a RAN system part, as well as reserving a far-flung Core (EPC) subsystem.
