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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">tuzsut</journal-id><journal-title-group><journal-title xml:lang="ru">Труды учебных заведений связи</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Telecommunication Universities</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-324X</issn><issn pub-type="epub">2712-8830</issn><publisher><publisher-name>СПбГУТ</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">tuzsut-232</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Исследование нагрузочных характеристик сети UMTS</article-title><trans-title-group xml:lang="en"><trans-title>The UMTS Load Characteristics Study</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>Симонина</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Simonina</surname><given-names>O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>СИМОНИНА Ольга Александровна, кандидат технических наук, доцент, доцент кафедры радиосвязи и вещания Санкт-Петербургского государственного университета телекоммуникаций им. проф. М.А. Бонч-Бруевича</p><p>Санкт-Петербург, 193232, Российская Федерация</p></bio><email xlink:type="simple">olga.simonina@spbgut.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Санкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-Бруевича<country>Россия</country></aff><aff xml:lang="en">The Bonch-Bruevich State University of Telecommunications<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>20</day><month>09</month><year>2017</year></pub-date><volume>3</volume><issue>3</issue><fpage>93</fpage><lpage>99</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Симонина О.А., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Симонина О.А.</copyright-holder><copyright-holder xml:lang="en">Simonina O.</copyright-holder><license 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://tuzs.sut.ru/jour/article/view/232">https://tuzs.sut.ru/jour/article/view/232</self-uri><abstract><p>Статья посвящена исследованию нагрузок, создаваемых в сети UMTS трафиком различных мультимедийных услуг. Исследование проведено с помощью имитационного моделирования. Показано, что критичными являются варианты с увеличением доли видеотрафика свыше 70 %. При этом в случае одновременной передачи потокового трафика и трафика передачи данных отказ происходит на уровне доступа, при превалировании мультимедийного трафика – потокового и голосового – на ядре сети. Данное исследование представляет интерес для эксплуатации сетей UMTS и планирования развития сети.</p></abstract><trans-abstract xml:lang="en"><p>The article is devoted to network traffic multimedia service UMTS. The study was conducted using simulation modeling. It is shown that it is critical to increase the share of video traffic over 70%. In the case of simultaneous transmission of streaming traffic and data traffic failure occurs on the access level. With the increase in the share multimedia traffic (voice and stream) a failure occurs on the core network. This study is of interest for the operation of UMTS networks and planning network development.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>UMTS</kwd><kwd>пропускная способность</kwd><kwd>мультимедийные услуги сети мобильной связи</kwd></kwd-group><kwd-group xml:lang="en"><kwd>UMTS</kwd><kwd>bandwidth</kwd><kwd>multimedia services mobile network</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">ICT Facts and Figures. 2016. ITU. URL: https://www.itu.int/en/Itu-D/statistics/Pages/default.aspx.</mixed-citation><mixed-citation xml:lang="en">ICT Facts and Figures. 2016. ITU. URL: https://www.itu.int/en/Itu-D/statistics/Pages/default.aspx.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Measuring the Information Society Report. 2017. ITU. 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