Discrete and Continuous Models and Applied Computational ScienceDiscrete and Continuous Models and Applied Computational ScienceDiscrete and Continuous Models and Applied Computational Science2658-46702658-7149Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)8315ArticlesСтатьиResearch ArticleAn Analytical Model of Load Distribution Schemes in LTE Heterogeneous NetworksАналитическая модель схем распределения нагрузки в сетях LTE с разнородными узлами связиEfimushkinaT VЕфимушкинаТатьяна ВладимировнаTelecommunication Systems DepartmentКафедра систем телекоммуникацийtvefimushkina@gmailSamuylovK EСамуйловКонстантин ЕвгеньевичTelecommunication Systems DepartmentКафедра систем телекоммуникацийksam@sci.pfu.edu.ruPeoples’ Friendship University of RussiaРоссийский университет дружбы народов150120131NO1 (2013)№1 (2013)374408092016Copyright ©; 2013, Ефимушкина Т.В., Самуйлов К.Е.2013Ефимушкина Т.В., Самуйлов К.Е.http://creativecommons.org/licenses/by/4.0https://journals.rudn.ru/miph/article/view/8315The resource allocation problem in Orthogonal Frequency Division Multiple Access relay-enhanced heterogeneous cellular networks is studied. An analytical model of the downlink channel in discrete time is suggested. We derive and analyze various resource allocation algorithms. In order to evaluate the role of different resource allocation schemes we obtain blocking probabilities and other performance metrics of interest.Проведено исследование технологии беспроводного доступа LTE на основе ортогонального частотного мультиплексирования OFDM. Разработана и проанализирована аналитическая модель функционирования гетерогенной сети LTE для нисходящего канала. Получены формулы для основных ВВХ функционирования модели гетерогенной сети.LTE-AdvancedOFDMArelay stationanalytical modelperformance metricsLTE-AdvancedOFDMAретрансляционная станцияаналитическая модельвероятностно-временные характеристики1.Long Term Evolution (LTE): Overview of LTE Air-Interface. White Paper. — Motorola, 2007.2.REPORT ITU-R M.2134. Requirements Related to Technical Performance for IMT-Advanced Radio Interface(s). — 2008.3.Wang L. Resource Allocation in OFDMA Relay-Enhanced Cellular Networks: Ph.D. thesis / School of Multidisciplinary Sciences The Graduate University for Advanced Studies (SOKENDAI). — 2010.4.A Survey on 3GPP Heterogeneous Networks / A. Damnjanovic, J. Montojo, W. Yongbin et al. // IEEE Wireless Commun. — 2001. — Pp. 10–21.5.Osman A., Mohammed A. Performance Evaluation of a Low-Complexity OFDM UMTS-LTE System. — 2008.6.Performance Analysis of Reuse Partitioning-Based Subchannelized OFDMA Uplink Systems in Multicell Environments / E. Oh, M.-G. Cho, S. Han et al. // IEEE Transactions on Vehicular Technology. — 2008. — Pp. 2617–2621.7.Wongand I.C., Evans B.L. Optimal Downlink OFDMA Resource Allocation with Linear Complexity to Maximize Ergodic Rates // IEEE Transactions on Wireless Communications. — 2008. — Pp. 962–971.8.Wengand L., Murch R. D. Cooperation Strategies and Resource Allocations in Multiuser OFDMA Systems // IEEE Transactions on Vehicular Technology. — 2009. — Pp. 2331–2342.9.Kwak R., Cioffi J. Resource-Allocation for OFDMA Multi-Hop Relaying Downlink Systems // Proc. IEEE Globecom. — 2007.10.Kaneko M., Popovski P. Adaptive Resource Allocation in Cellular OFDMA Systems with Multiple Relay Stations // Proc. IEEE VTC-Spring. — 2007.11.Башарин Г.П. Лекции по математической теории телетрафика. — 2009.12.Iversen V.B. Teletraffic Engineering Handbook // ITU-D, SG 2 Q 16/2. — 2008.