Научный журнал «ИНФОРМАЦИОННЫЕ ТЕХНОЛОГИИ И ТЕЛЕКОММУНИКАЦИИ»
Сообщение
2020, Vol. 8, Iss. 4 |
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THE DEVELOPMENT OF TELECOMMUNICATION NETWORKS IN ANGOLA REPUBLIC
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T. Nzinga, A. Koucheryavy
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Abstract: Research subject. The article is devoted to the analysis of the development of telecommunication networks in the Republic of Angola and the prospects for their development Method. System analysis. Core results. Determination of promising areas of research in the development of communication networks in terms of their creation in sparsely populated and hard-to-reach areas. Practical relevance. The results of the article can be used to modernize the telecommunication network of the Republic of Angola.
Keywords: telecommunication networks, hard-to-reach and sparsely populated areas, space-terrestrial telecommunication networks, telecommunication networks of the fifth and next generations.
DOI 10.31854/2307-1303-2020-8-4-1-9
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ARCHITECTURES OF THE FAST DEPLOYABLE FLYING NETWORK FOR EMERGENCIE
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T. Dinh, R. Kirichek
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Abstract: Climate change and natural disasters affected most of the countries all over the globe. The consequence such as tropical storms, floods and droughts directly affect social and various industrial sectors including Information Communication Technology. The article is intended to describe the architectures of the fast deployable flying network for emergencies to be used in a natural disaster.
Keywords: emergency telecommunication network, flying network, UAV, natural disaster.
DOI 10.31854/2307-1303-2020-8-4-10-22
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IMPLEMENTATION METHODS FOR SDN CONTROLLERS IN A UAV NETWORK
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M. Model, V. Kovalenko, A. Volkov, A. Muthanna
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Abstract: Research subject. The division of the performed functions between all UAVs of the same cluster, a comparison of the methods for implementing the SDN controller into the UAV network, a description of the sequence of actions implemented in the UAV cluster, depending on a specific application scenario. Method. Analysis of standards and recommendations in the field of SDN technologies and construction of UAV networks; Comparison of SDN controller implementation methods: outside the cluster, on the head node, on all UAVs of the same cluster, and implementation using two controllers (one outside the cluster, and the second on the head node). Core results. 4 ways of using the UAV are described in detail, as well as the sequence of actions performed by the UAV cluster for each method; Compared 4 ways to implement the SDN controller in the UAV network; A method for dividing the performed functions between UAVs of one cluster is presented. Practical relevance. The sequences of actions presented for each method of application will allow in the future to implement the execution of these scenarios using a UAV cluster; The article details the advantages and disadvantages of all four ways to implement an SDN controller; the presented method of dividing functions between UAVs has less resource consumption for individual UAVs and for the entire cluster as a whole, than with the method with the implementation of all functions on each UAV of the cluster.
Keywords: UAV, UAV networks, ground and flying segment, SDN, SDN controller and switch, UAV-BS, UAV-UE, sensor field, data relay, head node.
DOI 10.31854/2307-1303-2020-8-4-23-34
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EVALUATION OF INTERFERENCE IN ULTRA-DENSE 5G RADIO ACCESS NETWORKS WITH BEAMFORMING
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G. Fokin
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Abstract: In this paper, we investigate the dependence of the level of intersystem interference on the beam width of the adaptively formed antenna radiation pattern and the territorial separation of neighboring devices in ultra-dense 5G radio access networks. The results of simulation modeling of a radio access network based on 19 base stations with the parameterization of the antenna array gain by the width of the radiation pattern in the horizontal plane show that when the base station beam is directed to the user device and narrowed from 360° to 5°, the level of intrasystem interference decreases by 15 dB compared with the case of omnidirectional antennas. The results of simulation of a radio access network based on 19 three-sector base stations with planar antenna arrays of 64 elements illustrate a significant reduction in the level of interference in comparison with the case of omnidirectional antennas and, in order to obtain zones of a positive signal-to-noise ratio, confirm the need for a territorial separation of neighboring devices by 10–20 % of the range of radio coverage.
Keywords: location-aware beamforming, ultra-dense radio access network, base station, user device, 5G, cluster, beamwidth.
DOI 10.31854/2307-1303-2020-8-4-35-59
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HARDWARE SYSTEM FOR PARALLEL PROCESSING OF FLASH MEMORY CHIPS FOR PREPARING AN IDENTIFICATION SYSTEM
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S. Vladimirov, A. Yankovskiy
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Abstract: Research subject. The paper presents options for the implementation of a hardware-software system for parallel processing of flash memory chips for preparing an identification system. Method. The analysis of the degradation rate of memory modules is carried out and the average values of the processing time and the number of processing cycles for one memory chip during the preparation of the identifier are determined. Core results. Parallel and serial-parallel schemes for flash memory chips processing are proposed. Practical relevance. It is proposed to use the developed complex for the creation of identifying flash memory microcircuits intended for statistical research of identification methods and protocols.
Keywords: identification, flash memory, degraded memory, parallel processing.
DOI 10.31854/2307-1303-2020-8-4-60-68
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EXPLORING A MODEL NETWORK FOR ORCHESTATION IOT SERVICES BASED ON KUBERNETES
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D. Ermolenko, K. Kilicheva, A. Khakimov, A. Muthanna
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Abstract: This paper focuses on the implementation of the concept of microservices, which can be used to design and implement distributed edge services for IoT applications. Basically, IoT is a platform where integrated services are connected to a common network, so all devices are able to collect and exchange data with each other. Typically, monolithic user mobility services are developed for the core components of the ETSI MEC Unified Systems Reference Architecture. The ETSI MEC views microservices as a tool for separating monolithic applications into a set of loosely coupled distributed components, i.e. which provides an independent unit that implements a function. This architecture is expected to facilitate dynamic adaptation at runtime. However, increased modularity can also increase the load on orchestration and system management. In MEC, user equipment is connected through gateways to microservices running at the edge node. In the work, a distributed service is implemented using Docker containers and is designed to actually adapt to surrounding low-capacity servers. The results demonstrate that low latency for edge applications can be achieved with this kind of implementation. The integration of software technology with a standardized boundary system provides a solid foundation for subsequent development. This article discusses the use of edge computing architecture and Kubernetes for orchestration and management of network applications.
Keywords: Edge computing, Kubernetes, IoT, Clustering. Orchestration.
DOI 10.31854/2307-1303-2020-8-4-69-82
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A SURVAY ON THE SWARM INTELLIGENCE APPROACHES TO CONTROLLER PLACEMENT PROBLEM IN THE SOFTWARE DEFINED NETWORKS DESIGN AND OPTIMIZATION
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A. Vybornova
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Abstract: This article is dedicated to the overview and analysis of the existing approaches to the controller placement problem for the multi-controller Software Defined Networks (SDN) with a focus on the swarm intelligence methods. For this purpose, the controller placement problem is defined, as well as possible optimization functions and constraints. Research subject of this article is a controller placement problem for the multi-controller SDN. As a research method a comparative analysis is used. Core results of the work is a comparison of different approaches based on the different optimality criteria and constraints. Practical relevance of the work is that the results can be used in the SDN design and optimization.
Keywords: swarm intelligence, software defined networks, particle swarm optimization.
DOI 10.31854/2307-1303-2020-8-4-83-92
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ANALYSIS OF NETWORK RELIABILITY OF NETWORK SYNCHRONIZATION
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M. Lobastova, A. Matyukhin, A. Muthanna
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Abstract: This article describes the challenges of modern communication networks reliability, analyses ITU-T recommendations and regulations governing the communication networks reliability in Russian Federation. The network clock network is an integral part of digital communication networks. Therefore, the issue of the synchronization network reliability should be given great attention. Research subject. In this article, we discussed the reliability of the clock synchronization network. Method. The main mathematical tools are graph theory and probability theory. To implement the proposed method for assessing the structural reliability of the synchronization network, the direct search method is used. Core results. The results allow us to conclude that the proposed method can be applied to assess the structural reliability of the clock synchronization network. Practical relevance. The solution proposed in this article can be used for a reasonable assessment of the network structural reliability indicators, which is necessary for making a decision on the choice of a route for transmitting a synchronization signal.
Keywords: clock network synchronization, synchronization network reliability, ensuring reliability, brute-force method, two-pole network, 5G network, Internet of Things.
DOI 10.31854/2307-1303-2020-8-4-93-99
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Авторизация
