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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">bsuir</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады БГУИР</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady BGUIR</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7648</issn><issn pub-type="epub">2708-0382</issn><publisher><publisher-name>БГУИР</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35596/1729-7648-2023-21-2-49-57</article-id><article-id custom-type="elpub" pub-id-type="custom">bsuir-3600</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICS</subject></subj-group></article-categories><title-group><article-title>Влияние неоднородности пространственного распределения периферийного радиооборудования сетей 4G/5G на уровень электромагнитного фона, создаваемого в зданиях</article-title><trans-title-group xml:lang="en"><trans-title>Influence of the Heterogeneity of Spatial Distribution of Peripheral Radio  Equipment of 4G/5G Networks on the Level of Electromagnetic Background Created in Buildings</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мордачев</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Mordachev</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мордачев Владимир Иванович, к. т. н., доцент, ведущий научный сотрудник</p><p>220013, г. Минск, ул. П. Бровки, 6</p><p>Тел.: +375 17 293-84-38</p></bio><bio xml:lang="en"><p>Mordachev Vladimir Ivanovich, Сand. of Sci., Associate Professor</p><p>220013, Minsk, P. Brovki St., 6</p><p>Tel.: +375 17 293-84-38</p></bio><email xlink:type="simple">mordachev@bsuir.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>24</day><month>04</month><year>2023</year></pub-date><volume>21</volume><issue>2</issue><fpage>49</fpage><lpage>57</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мордачев В.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Мордачев В.И.</copyright-holder><copyright-holder xml:lang="en">Mordachev V.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.bsuir.by/jour/article/view/3600">https://doklady.bsuir.by/jour/article/view/3600</self-uri><abstract><p>Известные результаты исследований радиочастотного электромагнитного фона, создаваемого в зданиях радиочастотным электромагнитным излучением периферийного оборудования систем мобильной связи 4G/5G, включая оборудование массовой межмашинной связи/интернета вещей (mMTC/IoT) и абонентских устройств беспроводной телефонии и передачи данных, основаны на использовании модели равномерного случайного распределения этого оборудования по внутреннему объему здания. Ее адекватность при анализе ряда сценариев 4G/5G подвергается сомнению в связи с тем, что за исключением абонентских устройств, основная часть располагаемого в зданиях периферийного радиооборудования mMTC/IoT размещается на стенах помещений с тенденцией их группирования вблизи мест пересечения плоских поверхностей стен, пола и потолка. В статье приведены результаты сравнительных оценок средней интенсивности электромагнитного фона внутри здания при различном характере распределения множества точечных источников радиочастотных электромагнитных полей по внутреннему пространству здания: при их однородном равномерном распределении по его объему и при двух типах неоднородности этого распределения – при равномерном распределении источников по его внутренним поверхностям и равномерном их распределении по линиям пересечения этих поверхностей. Эти результаты свидетельствуют об относительно малом влиянии рассмотренных видов неоднородности пространственного размещения источников излучений на оценки средней интенсивности создаваемого ими электромагнитного фона внутри здания при использовании методики, основанной на представлении внутреннего пространства здания в виде совокупности телесных углов, отдельные элементы внутреннего пространства которых характеризуются постоянством средней объемной плотности источников и усредненных условий распространения радиоволн в направлении точки наблюдения. </p></abstract><trans-abstract xml:lang="en"><p>Known results of studies of the radio frequency electromagnetic background generated in buildings by electromagnetic radiation from the peripheral equipment of 4G/5G mobile communications, including equipment for massive machine-type communication/Internet of things (mMTC/IoT) and user’s devices for wireless telephony and data transmission, are based on the use of a model of uniform random distribution of this equipment over the building internal space. The adequacy of this model for the analysis of a number of 4G/5G scenarios is questioned due to the fact that, excluding user’s devices, the main part of the mMTC/IoT peripheral radio equipment located in buildings is distributed along the walls of the premises with a tendency to concentrate them near the intersections of flat surfaces of walls, floors and ceilings. Paper presents the results of comparative estimates of the average intensity of electromagnetic background inside building for different types of distribution of the set of point sources of RF electromagnetic fields over the building interior space: for their uniform distribution over internal space and for two types of heterogeneity of this distribution: for uniform distribution of sources over building internal surfaces and with their uniform distribution along the lines of intersection of these surfaces. Results of this analysis indicate a relatively small effect of the considered types of heterogeneity in the spatial distribution of radiation sources on the estimates of the electromagnetic background average intensity created by these sources inside the building, when using a technique based on the representation of the internal space of a building as a set of solid angles, which internal space separate sections are characterized by the constancy of the sources average space density and by the average conditions for radio waves propagation in the direction of the observation point. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>мобильная связь</kwd><kwd>4G</kwd><kwd>5G</kwd><kwd>периферийное устройство</kwd><kwd>электромагнитное излучение</kwd><kwd>электромагнитный фон</kwd><kwd>распространение радиоволн</kwd><kwd>электромагнитная безопасность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mobile communications</kwd><kwd>4G</kwd><kwd>5G</kwd><kwd>peripheral equipment</kwd><kwd>electromagnetic radiation</kwd><kwd>electromagnetic background</kwd><kwd>radio waves propagation</kwd><kwd>electromagnetic safety</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Mordachev V. I. (2021) Characteristics of the Electromagnetic Environment Created by Radiations of User Equipment of ...4G/5G/6G Cellular (Mobile) Communications in Buildings. Doklady BGUIR. 19 (6), 42–50. http://dx.doi.org/10.35596/1729-7648-2021-19-6-42-50 (in Russian).</mixed-citation><mixed-citation xml:lang="en">Mordachev V. I. (2021) Characteristics of the Electromagnetic Environment Created by Radiations of User Equipment of ...4G/5G/6G Cellular (Mobile) Communications in Buildings. Doklady BGUIR. 19 (6), 42–50. http://dx.doi.org/10.35596/1729-7648-2021-19-6-42-50 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Mordachev V. (2022) System Analysis of Electromagnetic Environment Created by Radiating 4G/5G User Equipment Inside Buildings. Proc. of the Int. Symp. “EMC Europe 2022”, Sweden, Sept. 5–8. 525–530. 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