ISSN 1991-2927
 

ACP № 3 (61) 2020

Author: "Andrei Andreevich Privalov"

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Sergei Aleksandrovich Ageev, Doctor of Sciences in Engineering, Associate Professor; graduated from the Faculty of Radioengineering of Ulyanovsk Polytechnic Institute; Head of a research department at Radioavionica JSC in St. Petersburg; specializes in the design of telecommunication systems, automated communication management systems, and the development of methods and algorithms for managing complex systems; an author of articles and patents in the field of telecommunication and multiservice systems and communication networks. e-mail: serg123_61@mail.ruS. A. Ageev

Nina Sergeevna Ageeva, graduated from the Faculty of Engineering and Physics of the Saint Petersburg National Research University of Information Technologies, Mechanics, and Optics (ITMO University); Scientific Associate the Marshal Budjonny Military Academy of Signal Corps; specializes in building the automated service quality management systems in multiservice communication networks; an author of articles and patents in the field of data compression methods and algorithms in multiservice communication networks. e-mail: nine11ia@yandex.ru.N. S. Ageeva

Vladimir Vladimirovich Karetnikov, Doctor of Sciences in Engineering, Professor; graduated from the Saint Petersburg State University of Waterway Communications; Head of the Department of Inland Navigation at Admiral Makarov State University of Maritime and Inland Shipping; specializes in the design and development of systems, communication networks and radio navigation systems; an author of articles and patents in this subject area. e-mail: spguwc-karetnicov@yandex.ruV. V. Karetnikov

Andrei Andreevich Privalov, Doctor of Military Sciences; graduated from the Marshal Budjonny Military Academy of Signal Corps; Professor of the Department of Electrical Communication of the Emperor Alexander I St. Petersburg State Transport University; specializes in the field of mathematical modeling and development of methods, algorithms, and control systems of infocommunication systems; an author of articles and patents in the field of operational management of communication networks and large cyber-physical systems. e-mail: aprivalov@inbox.ruA. A. Privalov

The real-time assessing method for the state of network elements to provide for quality parameters in corporate high-speed multiservice communication networks60_3.pdf

The article suggests an intelligent method and algorithms of assessing the state of network elements to provide for quality parameters of communication services in corporate multi-service communication networks, which operate in near real- time mode. The distinctive feature of corporate multi-service networks is the rapid change of their state. And this is an automated network management system, which provides for the specified quality of communication services. In this way, the relevance of this research is highlighted by the need to implement network management processes with specified quality in near real-time mode. The real-time assessing method for network element state is based on the intelligent agent concept. The suggested approach assumes the intelligent agents are created as hierarchical situational fuzzy networks, where management solutions are made on the basis of solution of hierarchical system of optimization problems, which relies on the methods of fuzzy mathematical programming, unlike common case-based methods. The main paradigm of their operation lies in ‘situation – action.’ This allows to reduce significantly the dimension of solving task and to obtain Pareto-optimal solutions for quality management of communication services. The intelligent agent is able to implement management solutions automatically provided that the network manager designate such capabilities to it. The method of estimating traffic parameters is based on the concept of conventional nonlinear Pareto-optimal filtering developed by V.S. Pugachev. The core of this method is in the two-stage procedure. In the first stage the parameter estimations are predicted, and in the second one their values are corrected, after next observations have been received. Adaptation is implemented on the basis of pseudogradient procedures, which parameters are adjusted with Takagi-Sugeno fuzzy logical conclusion. The mean relative error of traffic parameters estimation does not exceed 10%, which is sufficient for real-time quality management of communication services.

Hierarchical situational fuzzy network, intelligent agent, pseudogradient procedures, conventional nonlinear Pareto-optimal filtering, Takagi-Sugeno fuzzy logical conclusion, fuzzy rule base, fuzzy knowledge base.

2020_ 2

Sections: Automated control systems

Subjects: Automated control systems.

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Natalia Valerevna Evglevskaia, Candidate of Sciences in Engineering; graduated from the Faculty of Electrical Engineering of Saint Petersburg State Transport University; a lecturer of the Marshal Budjonny Military Academy of Signal Corps; an author of articles in the field of information security. e-mail: n.evglevskaya@gmail.com. Roman Sergeevich Pak, Cadet of the Marshal Budjonny Military Academy of Signal Corps; an author of an article in the field of network theory. e-mail: pakroman17@gmail.comN. V. Evglevskaia

Roman Sergeevich Pak, Cadet of the Marshal Budjonny Military Academy of Signal Corps; an author of an article in the field of network theory. e-mail: pakroman17@gmail.comR. S. Pak

Andrei Andreevich Privalov, Doctor of Military Sciences, Professor; graduated from the Stavropol Higher Military School of Communications of Communications; Professor of the Department of Telecommunications of Emperor Alexander I St. Petersburg State Transport University; a patent holder, author of articles, monographs in the field of information security, mathematical modeling of systems and communication processes, telecommunications control systems. e-mail: aprivalov@inbox.ruA. A. Privalov

Nikolai Aleksandrovich Khmelliar, graduated from the Marshal Budjonny Military Academy of Signal Corps; an officer of a department of the Military Unit No. 61535; an author of articles in the field of network theory. e-mail: theboyxxx@yandex.ruN. A. Khmelliar

Simeon Aleksandrovich Shinkarev, Candidate of Sciences in Engineering; completed the postgraduate studies at the Marshal Budjonny Military Academy of Signal Corps; Associate Professor at the Marshal Budjonny Military Academy of Signal Corps; a patent holder, author of articles in the field of network theory. e-mail: se_men82@ mail.ruS. A. Shinkarev

Algorithm for finding the conditioned spanning tree to transmit synchronization signals to the communication networks60_13.pdf

In designing, building and operation stages of communication networks, the requirements for different subsystems, and especially for the control subsystem, must be taken into account. In the present environment of constant increase of transmitting messages in communication networks, the requirements for the quality of digital channels and network devices are getting higher. The control subsystem as an integral part of the communication network is to be built in conjunction with it, but there are some independent tasks, that can be solved only for the control subsystem. One of the most important subsystems is the clock network synchronization one, which generates, transmits and distributes synchronization signals, required for keeping functioning of all digital network devices and for providing services of specified quality. The most crucial aspect of the synthesis of the clock network synchronization subsystem is the selection of hierarchy (scheme) of control signal distribution. The authors of the article developed the algorithm of building such a subsystem, which is the minimal rank conditioned tree with the best length of the line grid connecting all network nodes. This algorithm allows obtaining the optimized clock network synchronization subsystem and the control subsystem in general, because the algorithm is multifunctional and can be used for solving different tasks. Problems described in the article are of great importance both for fixed network structures and for the conditions of dynamic change of communication networks topology.

conditioned spanning tree, control subsystem, theorem of O.B. Lupanov, algorithms of Prim and Kruskal, STP.

2020_ 2

Sections: Electrical engineering and electronics

Subjects: Electrical engineering and electronics.

Anton Olegovich Kravtsov, St. Petersburg State Transport University, graduated from the Faculty of Automation and Intelligent Technologies of Emperor Alexander I St. Petersburg State Transport University; Postgraduate Student at the Department of Electrical Communication of PGUPS; an author of articles in the field of information security of telecommunication networks; research interests are in the field of telecommunication control systems, security of the critical information infrastructure. [e-mail:kravcovanton@mail.ru]A. Kravtsov,

Andrei Andreevich Privalov, St. Petersburg State Transport University, Doctor if Military Sciences, Professor; graduated from the Stavropol High School of Communications; Professor at the Department of Electrical Communication of PGUPS; an author of more than 110 research articles and educational materials, eight inventions in the field of information security and mathematical modeling of systems and communication processes, telecommunication control systems. [e-mail: aprivalov@inbox.ru]A. Privalov,

Mariia Anatolevna Rakk, St. Petersburg State Transport University, Candidate of Science in Engineering; graduated from the Electroengineering Faculty of Leningrad Railway Transport Institute; Associate Professor at the Department of Electrical Communication of PGUPS; an author of articles in the field of queueing systems, communication system simulation. [e–mail: rakkma@mail.ru]M. Rakk

The Model of Data-Burst Transmitting Process in the Network MPLS-TP in Terms of Computer Attacks at Rare Influx of Data 56_5.pdf

The strategy of scientific and technical development of the ‘Russian Railways’ holding for the period up to 2020 and the prospect till 2025 ‘White book’ envisages the organization of a batch Multiservice Transport Network of railway telecommunication on the basis of Multi-Protocol switching technology on the labels for the transport network-Multiprotocol Label Switching-Transport Profile (MPLS-TP). The authors have developed a mathematical model of the process of transferring data packets in the network MPLS-TP in the conditions of computer attacks at rare influx of data. The probability of the successful cyberattacks on a network element implemented by penetrator as well as a mean time for that are characteristics of cyberattacks. Formulas for calculating mean time, the probability density function as well as the function of transfer time distribution in the n conditions of computer attacks on Multiservice Transport Network MPLS-TP Technology at rare influx of data and at the various values of the probability of penetrator’s accessibility to each network element on the routing of transmitting and recovering of each network-element performance after cyberattacks.

Transport communication network, MPLS-TP technology, Method of topological transformation of stochastic networks, calculation of average time of the package delivery, routing, computer attacks, critical information infrastructure, protection of critical information structure.

2019_ 2

Sections: Information systems

Subjects: Information systems.



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