ELECTROMAGNETIC REALITY OF THE ENVIRONMENT
M.Yu. Maslov, NIIR — Samara Branch, head of the scientific center, associate professor, Ph.D.; mikem@soniir.ru
Yu.M. Spodobaev, NIIR — Samara Branch, chief researcher, professor, Dr.Sci.(Tech.); spod@soniir.ru
Developing wireless technologies have caused the appearance of multi-frequency stochastic non-stationary electromagnetic fields in the environment, which has led to the need to revise the concept and principles of protecting the population from a new influencing factor. The possibility of conducting medical and biological research and introducing generalized safety criteria in a new «in digital» experimental format is discussed.
Keywords: wireless technologies, stochastic electromagnetic fields, influencing factor, population protection, medical and biological research, safety criterion, «in digital» experiment.
RADIO MONITORING OF TECHNOGENIC OBJECTS IN NEAR-EARTH SPACE. TECHNOLOGIES USED AND DEVELOPMENT PROSPECTS
S.V. Kizima, The M.I. Krivosheev Radio Research & Development Institute (NIIR), Research center of big data processing systems, director, ITU expert, associate professor, Dr.Sci.(Tech.); kizima@niir.ru
The article is devoted to the problems of increasing the efficiency of satellite radio monitoring. The radio monitoring technologies used do not provide the necessary high level of completeness of satellite radio monitoring due to the significant increase in the number of technical objects in near-Earth space. The article discusses promising technologies of satellite radio monitoring based on the assessment of the parameters of the state of the electromagnetic situation from objects in near-Earth space.
Keywords: spacecrafts, radio emissions, radio monitoring, completeness of control, primary radio measurements, secondary processing of measurement information, electromagnetic situation, spatial scanning diagrams.
DECOMPRESSION METHOD OF FPV VIDEO STREAMS FROM UNMANNED SYSTEMS BASED ON A LATENT DIFFUSION NEURAL NETWORK MODEL
А.A. Berezkin, Bonch-Bruevich State university of telecommunications (SPbSUT), associate professor, Ph.D.; berezkin.aa@sut.ru
R.M. Vivchar, SPbSUT, associate professor, Ph.D.; vivchar. rm@sut.ru
R.V. Kirichek, SPbSUT, rector, Dr.Sci.(Tech.); kirichek@sut.ru
A.A. Zaharov, The M.I. Krivosheev Radio Research & Development Institute (NIIR), deputy director general, associate professor, Ph.D.; a.zaharov@niir.ru
The article proposes an original method for restoring a compressed video stream while preserving the ability of an unmanned system to perform assigned tasks. The novelty of the proposed method lies in the fact that the underlying diffusion model, developed by transforming the elements of a pretrained deep generative neural network model of inverse diffusion, allows not only to restore the originally compressed transmitted video stream in order to reduce the delay, but also to maintain the required quality of the transmitted image.
Keywords: reverse diffusion, stable diffusion, video stream compression, neural network decoder, unmanned system.
ALGORITHMS FOR ENERGY SAVING IMPROVEMENT OF USER EQUIPMENT IN 5G NR COMMUNICATION SYSTEMS. PART II
G.A. Ermolaev, Lobachevsky State University of Nizhni Novgorod, mobile communication systems department, postgraduate; gregory.a.ermolaev@gmail.com
The purpose of this work is to increase the efficiency of the discontinuous reception (DRX) scheme used for user equipment (UE) energy saving in 5th Generation (5G) wireless mobile communication systems of the New Radio (NR) standard starting from the first release (NR Release-15). In the second part of the paper, the energy efficiency of the algorithms proposed in the first part is analyzed by the system level simulations for various traffic models in the most important scenario (Dense Urban Macro) of the 5G wireless mobile communication systems deployment in urban environments. The analysis of the simulation results showed that the proposed methods of the discontinuous reception scheme adaptation to incoming traffic provide a significant gain in energy saving (up to 70%) for all types of data traffic in case of low load of the communication system time-frequency resources. Modeling of the communication system with using the signal for the user equipment transition to sleep mode demonstrates its versatility with respect to the type of incoming data traffic.
Keywords: radio communication systems, energy saving, discontinuous reception scheme, DRX, receiving and transmitting equipment, digital signal processing algorithms, 5G NR.
A MODEL OF THE PACKET SERVICE PROCESS AT IAB NODE
V.A. Beschastnyi, Peoples' Friendship University of Russia (RUDN University), associate professor, Ph.D.; beschastnyy-va@rudn.ru
E.A. Machnev, RUDN University, postgraduate; 1 042 200 071@rudn.ru
D.Yu. Ostrikova, RUDN University, associate professor, Ph.D.; ostrikova-dyu@rudn.ru
E.S. Golos, RUDN University, postgraduate; 1 142 220 130@rudn.ru
Yu.V. Gaidamaka, RUDN University, professor, Dr.Sci.(Phys.-Math.); gaydamaka-yuv@rudn.ru
Ye.A. Kucheryaviy, Higher School of Economics (HSE), A.N. Tikhonov Institute of Electronics and Mathematics, professor, Dr.Sci.(Tech.); ykucheryaviy@hse.ru
The recently standardized by 3GPP integrated access and backhaul (IAB) technology is expected to provide costefficient densification of 5G New Radio access network. This technology may provide a simple and efficient solution for providing uninterrupted connectivity along the highways. However, relying on multi-hop communications, one of the critical metrics in such a system is latency that has been hardly explored so far. In this paper, we consider a roadside deployment of IAB system operating in millimeter wave (mmWave) band. To this aim, we utilize the tools of the queuing theory to characterize the packet delay as a function of system parameters. Our numerical results show that the choice of the transmission phases' duration is the key optimization parameter for controlling the packet latency.
Keywords: IAB, 5G, New Radio, half-duplex, packet latency, queuing theory.
THEORETICAL SUBSTANTIATION OF ZERO ABSOLUTE TRANSMISSION LEVELS IN TELECOMMUNICATIONS
S.A. Iasinskii, S.M. Budyonny’s Military Academy of Communications, professor, associate professor, Dr.Sci.(Tech.); yasinsky777@mail.ru
The article presents a mathematical and electrical model to substantiate zero absolute transmission levels in resistance, on the basis of which the corresponding voltage and current levels are calculated. The refined zero absolute transmission levels obtained after theoretical substantiation from scientific positions are proof of the correctness of the empirical choice of the existing zero (reference) values of their resistance and power.
Keywords: telecommunication, absolute transmission levels, linear electrical circuits, golden section.
REFORMING THE LICENSING STRUCTURE IN THE FIELD OF TELECOMMUNICATIONS IN THE RUSSIAN FEDERATION
D.A. Palcin, The M.I. Krivosheev Radio Research & Development Institute (NIIR), director of research center, palcin@niir.ru
A.P. Pshenichnikov, Moscow Technical University of Communications and Informatics, professor, Ph.D.; psheni4nikov@yandex.ru
The main trends in the global practice of licensing in the field of telecommunications are considered, and the analysis of the state of licensing of communication services in the Russian Federation in the context of deep technological modernization of the industry is carried out. As a matter of discussion, a number of measures have been proposed to bring licensing requirements in line with the current structure of the telecommunications network of the Russian Federation and promising areas of its development.
Keywords: licensing of communication services, three-tier licensing structure.
AN ALGORITHM FOR A SPACECRAFT TO SELECT AN EARTH STATION TO ESTABLISH COMMUNICATIONS IN BANDS WHOSE RADIO TRANSPARENCY DEPENDS ON THE STATE OF THE ATMOSPHERE
I.N. Panteleimonov, The M.I. Krivosheev Radio Research & Development Institute (NIIR), head of the laboratory; panteleimonov@niir.ru
Due to the complexity of accurate weather forecasting, traditional planning of communication sessions between spacecraft and earth stations in wavelength ranges, where the radio transparency depends on the state of the atmosphere, can lead to the impossibility of carrying out communication sessions with a given quality. The article describes an algorithm for automatically selecting an earth station by a spacecraft to establish high-speed communications with highly directional antenna systems in the specified wavelength ranges, depending on the state of the atmosphere, which can serve as the basis for creating information exchange systems with multi-satellite constellations.
Keywords: spacecraft, Earth station, pointed antenna, low-directional antenna, on-board equipment, low-speed subscriber line, high-speed subscriber line.
UNDERWATER WIRELESS ACOUSTIC TRANSCEIVER
V.F. Myshkin, Tomsk Polytechnic University (TPU), nuclear fuel cycle department, professor, Dr.Sci.(Phys.-Math.); gos100@tpu.ru
I.I. Pavlov, Siberian State University of Telecommunications and Information Science, department of radio engineering devices and technosphere security, associate professor, Ph.D.; iipavlov02@mail.ru
S.F.Balandin, V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, optical location laboratory, senior research scientist, Ph.D.; bal@iao.ru
V.A. Khan, TPU, professor, V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, lead researcher, professor, Dr.Sci.(Tech.); nt.centre@mail.ru
The paper proposes a structural scheme of a wireless underwater acoustic transceiver, which will be characterized by low cost, minimal power consumption (that is, long battery life), the ability to organize communication between transceivers both in the line of sight (point-to-point mode) and to organize communication between transceivers that are not in the line of sight (transit mode) and modularity, replacing failed units rather than the entire wireless underwater acoustic transceiver.
Keywords: underwater acoustic communication channel, underwater acoustic communication system, wireless underwater acoustic transceiver, reception mode, transmission mode, transit node mode.
