Russian Federation
Russian Federation
Purpose: To develop a methodology for assessing the quality of data transmission network functioning (DTN) of cyber-physical systems (CPS) at JSCo “RZD” in the event of cyberattacks by malicious actors and possible technical failures. Methods: The authors used specific and general mathematical models. These included a mathematical model of the radio channel, incorporating connection establishment and maintenance processes; a cyberattack model of the “Denial of Service” type; a model for detecting cyberattacks, followed by the restoration of data transmission; and a model for data transmission via various routes; a model of a communication node in the context of cyberattacks and potential technical failures; a model for data transmission over wired communication channels using the TCP protocol, as well as a comprehensive model of the DTN of the CPS at JSCo “RZD” in the event of malicious cyberattacks and technical failures. Results: The methodology developed allows for the evaluation of the quality of DTN functioning of the CPS at JSCo “RZD” in the event of cyberattacks and technical failures. Measures to prevent disruptions in data transmission to the CPS control objects have been identified. The methodology is presented in the form of a flowchart algorithm, where each block illustrates the calculation of time distribution functions based on specific mathematical models. Practical significance: The proposed methodology is intended for a comprehensive assessment of the quality of DTN functioning of the CPS at JSC “RZD” in the event of cyberattacks and technical failures. It is particularly beneficial for research organizations and companies involved in the development and improvement of unmanned and robotic systems, as it provides the approaches for designing reliable and resilient data transmission networks.
Data transmission network, communication network, methodology, quality of functioning assessment, mathematical model
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