DYNAMIC CONTROL OF RADIO FREQUENCY RESOURCE OF 5G NETWORKS FOR VARIOUS TYPES OF SPECTRUM ACCESS
V.O. Tikhvinsky, FSUE NIIR, chief researcher, JSC NIITC, deputy general director on innovation technologies, MTUCI, professor, Dr.Sci.(Econ.); vtniir@mail.ru
At the stage of development of technical requirements for the equipment of 5G networks, these were proposed many innovative solutions that increase 5G capabilities and efficiency of the already allocated spectrum resource for radio network by various methods of dynamic management of this resource. However, the implementation of these innovations requires a change in existing regulatory rules for access to the radio spectrum, especially in Russia. The article describes scenarios and functional modules that provide dynamic spectrum resource management of 5G networks using unlicensed spectrum and licensed spectrum sharing.
Keywords: radio spectrum, RS, electromagnetic compatibility, EMC, LAA, LSA, NG RAN, 5G networks.
THE PROBLEMS OF FREQUENCY RESOURCE SHARING FOR 700 MHZ BAND OF 5G NETWORKS
V.P. Vysotchin, Air Force Research Institute (CNII VVS) of the Ministry of Defense of the Russian Federation, head of a department, senior researcher, Ph.D.; cnii_vvs_1@mil.ru
The article discusses electromagnetic compatibility issues of mobile 5G equipment and receivers of aeronautical radio navigation service (ARNS) in 700 MHz frequency band. The results of studies of an effect of unintended interference from 5G network transmitters on ARNS receivers for various interaction scenarios are presented. EMC measures ensuring their compatibility and spectrum sharing are defined.
Keywords: 5G network, azimuth-rangefinder radio beacon (ADRM), aeronautical radio navigation service (ARNS), electromagnetic compatibility, EMC, unintended radio interference (RFL).
IDENTIFICATION OF UMTS AND LTE MOBILE NETWORK SIGNALS IN THE STUDY OF EMC WITH GSM NETWORKS
V.P. Vysotchin, CNII VVS of the Ministry of Defense of the Russian Federation, head of a department, senior research fellow, Ph.D.; cnii_vvs_1@mil.ru
M.I. Nedobezhkin, CNII VVS of the Ministry of Defense of the Russian Federation, senior research fellow; cnii_vvs_1@mil.ru
V.V. Antochin, CNII VVS of the Ministry of Defense of the Russian Federation, senior research fellow; cnii_vvs_1@mil.ru
The problem of frequency sharing in Russia requires experimental studies, as well as the development of signal identification systems for simultaneous operation of the GSM-900, UMTS-900, LTE-900 mobile networks in the same frequency range. The method that improves the process of identification of broadband signals of LTE and UMTS networks against the background of unintended radio interferences induced by GSM networks.
Keywords: unintended radio interference (URI), mobile communication networks, GSM, UMTS, LTE, electromagnetic compatibility, EMC), identification, electromagnetic situation.
PROBLEMS OF RADIO FREQUENCY SPECTRUM CONVERSION IN THE INTERESTS OF THE DEVELOPMENT OF 5G/IMT-2020 SYSTEMS
V.S. Yakimenko, Air Force Academy named after N.E. Zhukovsky and Y.A. Gagarin, Military educational scientific center (MESC), SRTI of Electronic Warfare, leading researcher, Dr.Sci.(Tech.); yakimenkoav@mail.ru
S.N. Yanshin, Air Force Academy named after N.E. Zhukovsky and Y.A. Gagarin, MESC, SRTI of Electronic Warfare, leading researcher, Ph.D.; yanshin@list.ru
The successful development of 5G/IMT-2020 telecommunications systems implies providing them with the necessary amounts of the radio frequency spectrum. In modern conditions, the solution of the problem is possible through the implementation of measures for the conversion of the radio frequency spectrum. The problems of radio frequency spectrum conversion are discussed.
Keywords: radio frequency spectrum conversion, radio electronic equipment, efficiency of use RF, frequency band release.
DYNAMIC TRAFFIC MANAGEMENT OF MEDICAL SENSOR NETWORKS
M.A. Blinnikov, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications (SPbSUT), department of communication networks and data transmission (CN and DT), postgraduate; michael. blinnikov@gmail.com
R.Ya. Pirmagomedov, SPbSUT, department of CN and DT, associate professor, Ph.D.; prya.spb@gmail.com
The existing operating modes of the medical nanonetworks body control unit (BCU) are analyzed. A new dynamic data packaging protocol is developed for the BCU. Also, simulation of a medical nanonetwork application operating in various modes is performed. Recommendations for the BCU’s buffer memory are presented. Equations for calculation of the total delay in
transmitting the sensory report and the amount of information transmitted by the application are obtained. The prototype of BCU operating under the dynamic data packaging protocol is developed.
Keywords: medical networks, body area networks, traffic modeling, e-health, nanonetworks.
MODEL OF INTERNET OF THINGS AS A DELAY TOLERANT NETWORK
O.A. Mahmood, SPbSUT, department of CN and DT, postgraduate; comm_447@yahoo.com
A.I. Paramonov, SPbSUT, department of CN and DT, professor, Dr.Sci.(Tech.); alex-in-spb@yandex.ru
A.Eu. Koucheryavy, SPbSUT, head of the department of CN and DT, professor, Dr.Sci.(Tech.); akouch@mail.ru
The article presents the results of the IoT networking features analysis. The focus is on the organization of the IoT, as well as on the modeling of the message delivery process in conditions of the low density of users and lack of mobile networks coverage. The target network is
considered as a network with moving nodes that can perform the functions of transporting data between points with different geographic coordinates. Approaches and methods for creating an IoT network as a network tolerant to delays are proposed.
Keywords: internet of things, IoT, delay tolerant network, DTN, ad hoc, MANET.
MATHEMATICAL MODEL FOR ANALYZING COMMUNICATION NETWORKS WITH ONE OR SEVERAL TRAFFIC EXCHANGE NODES
G.V. Chechin, Moscow Aviation Institute (MAI), department of radio systems and control complexes, information transmission and information security, associate professor, Ph.D.;
chechin.gen@mail.ru
A mathematical model of an Internet traffic exchange network through one or several Internet Exchange Points (IXP) in the form of a queuing network is presented. The model allows to carry out the analysis of alternative options for building a traffic exchange network and determine the optimal parameters of its structure: minimize the average delay and choose the capacity of
communication channels and the performance of traffic exchange nodes with restrictions on reliability and cost, choose a network topology for the exchange of traffic taking into account the main parameters.
Keywords: communication network, traffic, queuing system, average delay, capacity, availability factor, cost.
TECHNICAL ASPECTS OF THE DEVELOPMENT OF PROSPECTIVE COMMUNICATION PAYLOAD ELECTRIC GROUND SUPPORT EQUIPMENT
E.B. Protsenko, JSC Academician M.F. Reshetnev Information Satellite Systems (ISS), head of a sector; eprotsenko@iss-reshetnev.ru
D.A. Bolshakov, JSC Academician M.F. Reshetnev ISS, lead
engineer, Ph.D.; dbolshakov@iss-reshetnev.ru
The transition from satellites based on the traditional payloads to the High Throughput Satellites (HTS) and orbital frequency resource multiplexing impose new requirements to architecture and characteristics payloads and electrical ground support equipment. This article describes the architecture and technical features of the electrical ground support equipment unified as effectively as possible which is used for either testing of conventional communication repeaters or more complicated advanced applications.
Keywords: payload test, electrical ground support equipment, bit error rate, satellite communications.
CYCLOSTATIONARY MODELS OF INFOCOMMUNICATION SIGNALS WITH PULSE AMPLITUDE MODULATION
T.Ya. Shevgunov, MAI, associate professor, Ph.D.; shevgunov@gmail.com
V.A. Shevtsov, MAI, professor, Dr.Sci.(Tech.); vs@mai.ru
A.M. Petrakov, MAI, associate professor, Ph.D.; nio4@mai.ru
V.V. Borodin, MAI, associate professor, Ph.D.; doc_bor1@mail.ru
The two-dimensional autocorrelation function, cyclic autocorrelation function, and spectral correlation function are considered. Their closed-form expressions are obtained for a pulse amplitude modulated signal. It is shown that components of the cyclic and spectral autocorrelation functions which belong to non-zero cyclic frequencies contain additional information that can be used as a basis for new signal processing techniques and algorithms for control systems.
Keywords: cyclostationarity, cyclostationary random processes, periodically correlated random processes, spectral correlation function.
SYNCHRONIZATION USING CODE SEQUENCES A, C, S IN MULTILATERATION SYSTEMS
B.G. Sverdlov, MAI, associate professor, Ph.D.; sverdlovbg@rambler.ru
E.V. Sveshnikov, MAI, associate professor, senior research fellow, Ph.D.; sev1938@yandex.ru
The technology of multilateration (MLAT), that is used for monitoring the air traffic on the routes and in the airport area, assumes high-precision binding of the moments of reception of aircraft responder signals on spatially-spaced points of reception to a uniform time scale. As a result, the errors of the synchronization system have a direct impact on the final accuracy characteristics of the system. The article analyzes the capabilities of the synchronization system using code sequences A, C, S, that are used in the aircraft responder signal. This option provides a high degree of unification of equipment of synchronization system, reducing the cost of implementation and operation of MLAT, and high accuracy characteristics.
Keywords: multilateration systems, synchronization systems, SRNS GLONASS/GPS, aircraft responder of secondary radar, accuracy characteristics.