PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Tytuł artykułu

Analysis of an Adaptive Switching Point for LTE TDD by Dynamic System-Level Simulations

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This paper introduces an LTE system level simulator and presents investigations of scenarios with differently balanced traffic emergence between uplink and downlink as well as inhomogeneous distribution of link direction asymmetry. In the TDD mode of LTE, duplexing is implemented via sharing the time domain between uplink and downlink users. This is done by different switching configurations, which offer varying capacity distributions between downlink and uplink, from a downlink-heavy configuration with 90 percent of the capacity in downlink direction to uplink heavy configurations with 60 percent uplink. We utilize the available capacity perfectly by adjusting the link configuration appropriately to traffic emergence. Performance gains when selecting a configuration appropriate to the arising traffic compared to usage of a static configuration with equally distributed capacity are investigated. In case of different configurations, additional interference can occur in neighbored cells due to distinct communication direction at the same time. We clarify the differences between these scenarios and quantify the gains and losses when the switching point between uplink and downlink is variable.
Twórcy
  • Research Group Networks and Mobility, Department of Mobile Computing at the University of Applied Sciences Upper Austria, Campus Hagenberg, Softwarepark 11, 4232 Hagenberg, Austria
  • Department of Mobile Computing at the University of Applied Sciences Upper Austria, School of Informatics, Communications and Media, Softwarepark 11, 4232 Hagenberg, Austria
Bibliografia
  • [1] G. Piro, L. Grieco, G. Boggia, F. Capozzi, and P. Camarda, “Simulating LTE cellular systems: An open-source framework,” IEEE Transactions on Vehicular Technology, vol. 60, no. 2, pp. 498–513, Feb. 2011.
  • [2] J. Ikuno, M. Wrulich, and M. Rupp, “System level simulation of LTE networks,” in Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st, May 2010, pp. 1–5.
  • [3] Q. Zheng, H. Du, J. Li, W. Zhang, and Q. Li, “Open-LTE: An open LTE simulator for mobile video streaming,” in 2014 IEEE International Conference on Multimedia and Expo Workshops, Jul. 2014, pp. 1–2.
  • [4] Y. Wang, S. Frattasi, T. Sorensen, and P. Mogensen, “Network timesynchronization in TDD based LTE-advanced systems,” in Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th, Apr. 2009, pp. 1–5.
  • [5] Y. Wang, K. Valkealahti, K. Shu, R. Sankar, and S. Morgera, “Performance evaluation of flexible TDD switching in 3gpp LTE system,” in 2012 35th IEEE Sarnoff Symposium (SARNOFF), May 2012, pp. 1–4.
  • [6] J. R. Kulcsar, “Qualit¨atsevaluierung repr¨asentativer Werte f¨ur das Interface zwischen Link-Level- und System-Level-Simulatoren in Mobilkommunikationssystemen,” Master’s thesis, Fachhochschule Hagenberg, Austria, 2009.
  • [7] J. C. Ikuno, M. Wrulich, and M. Rupp, “System level simulation of LTE networks,” in Proc. 2010 IEEE 71st Vehicular Technology Conference: VTC2010-Spring, Taipei, May 2010.
  • [8] J. B. Andersen, T. S. Rappaport, and S. Yoshida, “Propagation measurements and models for wireless communications channels,” Comm. Mag., vol. 33, no. 1, pp. 42–49, Jan. 1995.
  • [9] J.-E. Berg, “A recursive method for street microcell path loss calculations,” in Personal, Indoor and Mobile Radio Communications, 1995. PIMRC’95. ’Wireless: Merging onto the Information Superhighway’, Sixth IEEE International Symposium on, vol. 1, 1995, pp. 140–143.
  • [10] C. Osterkorn, G. Ostermayer, and M. Huemer, “Comparison of oneand two-dimensional slow fading models in mobile radio system simulations,” in IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005, vol. 4, Sep. 2005, pp. 2650–2654 Vol. 4.
  • [11] T. T. Ha, Theory and Design of Digital Communication Systems. Cambridge University Press, 2010.
  • [12] E. Dahlman, S. Parkvall, J. Skold, and P. Beming, 3G Evolution, Second Edition: HSPA and LTE for Mobile Broadband. Academic Press, 2008.
  • [13] V. Pauli, I. Viering, C. Buchner, E. Saad, G. Liebl, and A. Klein, “Efficient link-to-systemlevel modeling for accurate simulations of MIMO-OFDM systems,” in Proceedings of the 2009 IEEE international conference on Communications, ser. ICC’09. Piscataway, NJ, USA: IEEE Press, 2009, pp. 3599–3604.
  • [14] M. Wrulich, S. Eder, I. Viering, and M. Rupp, “Efficient Link-to-System Level Model for MIMO HSDPA,” in IEE GlobeCom. IEEE Press, 2008.
  • [15] A. G. Alexiou, C. Bouras, V. Kokkinos, A. Papazois, and G. Tsichritzis, “Efficient MCS selection for MBSFN transmissions over LTE networks.” in Wireless Days. IEEE, 2010, pp. 1–5.
  • [16] 3GPP, “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures,” 3rd Generation Partnership Project (3GPP), TS 36.213, Sep. 2008.
  • [17] ETSI, “Universal Mobile Telecommunications System (UMTS); Selection procedures for the choice of radio transmission technologies of the UMTS,” ETSI, Tech. Rep., 1998, tR 101 112 V3.2.0 (1998-04).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-18b95654-57c5-41f7-a5a9-5cf6d1ba2943
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.