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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">20225</article-id><article-id pub-id-type="doi">10.22363/2312-9735-2018-26-4-357-370</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Computer Science</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Информатика и вычислительная техника</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Session-level control in heterogeneous mobile radio networks with device-to-device connections</article-title><trans-title-group xml:lang="ru"><trans-title>Управление потоками в гетерогенных мобильных сетях радиодоступа с соединениями устройство - устройство</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Andreev</surname><given-names>Sergey D</given-names></name><name xml:lang="ru"><surname>Андреев</surname><given-names>Сергей Дмитриевич</given-names></name></name-alternatives><bio xml:lang="en"><p><span lang="en-AU">Cand.Sc., Ph.D., senior research scientist at Tampere University of Technology, Finland</span></p></bio><bio xml:lang="ru"><p><span lang="ru-RU">кандидат технических наук, </span>Ph<span lang="ru-RU">.</span>D<span lang="ru-RU">, старший научный сотрудник Технологического университета г. Тампере, Финляндия</span></p></bio><email>serge.andreev@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Samouylov</surname><given-names>Konstantin E</given-names></name><name xml:lang="ru"><surname>Самуйлов</surname><given-names>Константин Евгеньевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Professor, Doctor of Technical Sciences, Professor of Department of Applied Probability and Informatics of Peoples’ Friendship University of Russia (RUDN University)</p></bio><bio xml:lang="ru"><p>профессор, доктор технических наук, профессор кафедры прикладной информатики и теории вероятностей</p></bio><email>samuylov-ke@rudn.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tyurlikov</surname><given-names>Andrey M</given-names></name><name xml:lang="ru"><surname>Тюрликов</surname><given-names>Андрей Михайлович</given-names></name></name-alternatives><bio xml:lang="en"><p>Professor, Doctor of Technical Sciences, Professor of Department of Infocommunication Systems of Saint-Petersburg State University of Aerospace Instrumentation</p></bio><bio xml:lang="ru"><p>профессор, доктор технических наук, профессор кафедры инфокоммуникационных систем</p></bio><email>turlikov@vu.spb.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tampere University of Technology</institution></aff><aff><institution xml:lang="ru">Технологический университет г. Тампере</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia (RUDN University)</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Saint-Petersburg State University of Aerospace Instrumentation</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный университет аэрокосмического приборостроения</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2018</year></pub-date><volume>26</volume><issue>4</issue><issue-title xml:lang="en">VOL 26, NO4 (2018)</issue-title><issue-title xml:lang="ru">ТОМ 26, №4 (2018)</issue-title><fpage>357</fpage><lpage>370</lpage><history><date date-type="received" iso-8601-date="2018-12-21"><day>21</day><month>12</month><year>2018</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Andreev S.D., Samouylov K.E., Tyurlikov A.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Андреев С.Д., Самуйлов К.Е., Тюрликов А.М.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Andreev S.D., Samouylov K.E., Tyurlikov A.M.</copyright-holder><copyright-holder xml:lang="ru">Андреев С.Д., Самуйлов К.Е., Тюрликов А.М.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/20225">https://journals.rudn.ru/miph/article/view/20225</self-uri><abstract xml:lang="en"><p>In the emerging fifth-generation mobile networks, the challenge of system capacity and user connection quality boosting becomes increasingly important. To this aim, it is possible to apply a novel direct communication technique that is built upon device-to-device (D2D) connectivity. Such heterogeneous interactions allow to offload data flows from a cellular network into the D2D system, which may operate in unlicensed frequencies. However, there emerge several problems with interference coordination and radio resource allocation. This work considers a model of the direct communication system with cellular assistance, which serves user-initiated data flows (sessions), as well as proposes an algorithm to control traffic offloading from a cellular network onto the D2D connections. Analytical and simulation results are offered to investigate this heterogeneous system with D2D communication capabilities.</p></abstract><trans-abstract xml:lang="ru"><p>В перспективных мобильных сетях пятого поколения все более актуальной становится задача повышения ёмкости системы связи, а также качества пользовательского соединения. Для этих целей возможно применять новый способ прямого соединения пользователей, построенный на взаимодействии устройство-устройство (device-to-device, D2D). Такое гетерогенное взаимодействие позволяет выгружать потоки данных из сотовой сети в систему D2D, которая может функционировать на нелицензированных частотах. Однако при этом возникает ряд особенностей, связанных с учётом интерференции и распределением ресурсов радиоканала. В данной статье рассматривается модель системы прямых соединений D2D с сотовой поддержкой, обслуживающей потоки пользовательских данных (сессии), а также предлагается алгоритм управления выгрузкой трафика из сотовой сети на соединения D2D. Приводятся результаты аналитического и имитационного моделирования, позволяющие провести исследование гетерогенной системы связи с возможностью взаимодействия устройство-устройство.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Fifth-generation networks</kwd><kwd>direct connectivity</kwd><kwd>device-to-device (D2D) communication with cellular assistance</kwd><kwd>traffic offloading control</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Сети пятого поколения</kwd><kwd>прямое соединение пользователей</kwd><kwd>связь устройство</kwd><kwd>устройство с сотовой поддержкой, управление выгрузкой трафика</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">J. G. Andrews, S. Buzzi, W. Choi, S. V. Hanly, A. Lozano, A. C. K. Soong, J. C. 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