Multi-Objective Handover in LTE Macro/Femto-Cell Networks

  • Roy, Abhishek (Samsung Electronics) ;
  • Shin, Jitae (College of Information and Communication Engineering, Sungkyunkwan University) ;
  • Saxena, Navrati (College of Information and Communication Engineering, Sungkyunkwan University)
  • 투고 : 2011.11.02
  • 심사 : 2012.08.01
  • 발행 : 2012.10.31

초록

One of the key elements in the emerging, packet-based long term evolution (LTE) cellular systems is the deployment of multiple femtocells for the improvement of coverage and data rate. However, arbitrary overlaps in the coverage of these femtocells make the handover operation more complex and challenging. As the existing handover strategy of LTE systems considers only carrier to interference plus noise ratio (CINR), it often suffers from resource constraints in the target femtocell, thereby leading to handover failure. In this paper, we propose a new efficient, multi-objective handover solution for LTE cellular systems. The proposed solution considers multiple parameters like signal strength and available bandwidth in the selection of the optimal target cell. This results in a significant increase in the handover success rate, thereby reducing the blocking of handover and new sessions. The overall handover process is modeled and analyzed by a three-dimensional Markov chain. The analytical results for the major performance metrics closely resemble the simulation results. The simulation results show that the proposed multi-objective handover offers considerable improvement in the session blocking rates, session queuing delay, handover latency, and goodput during handover.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation (NRF)

참고문헌

  1. 3rd Generation Partnership Project (3GPP), "Evolved universal terrestrial radio access (E-UTRA) and evolved universal terrestrial radio access network (E-UTRAN); overall description, technical specification, stage 2 (release 8)," TS 36.300 V8.4.0, 2008.
  2. P. Xia, V. Chandrasekhar, and J. G. Andrews, "Open vs. closed access femtocells in the uplink," IEEE Trans. Wireless Commun., vol. 9, no. 12, pp.3798-3809, Dec. 2010. https://doi.org/10.1109/TWC.2010.101310.100231
  3. V. Chandrasekhar, J. G. Andrews, and A. Gatherer, "Femtocell networks: A survey," IEEE Commun. Mag., vol. 46, pp. 59-67, Sept. 2008. https://doi.org/10.1109/MCOM.2008.4623708
  4. R. Y. Kim, J. S. Kwak, and K. Etemad, "WiMAX femtocell: Requirements, challenges, and solutions," IEEE Commun. Mag., vol. 47, pp. 84-91, Sept. 2009.
  5. M. Andrews, V. Capdevielle, A. Feki, and P. Gupta, "Autonomous spectrum sharing for mixed LTE femto and macro cells deployments," in Proc. IEEE INFOCOM, Mar. 2010, pp. 1-5.
  6. M. Emmelmann, S. Wiethoelter, A. Koepsel, C. Kapler, and A. Wolisz, "Moving toward seamless mobility: State of the art and emerging aspects in standardization bodies," Springer Wireless Personal Commun., vol. 43, no. 3, pp. 803-816, 2007. https://doi.org/10.1007/s11277-007-9255-6
  7. R. Bless, J. Hillebrand, C. Prehofer, and M. Zitterbart, "A quality-ofservice signaling architecture for seamless handover support in next generation, IP-based mobile networks," Springer Wireless Personal Commun., vol. 43, no. 3, pp. 817-835, Nov. 2007. https://doi.org/10.1007/s11277-007-9260-9
  8. A. Dutta, S. Das, D. Famolari, Y. Ohba, K. Taniuchi, V. Fajardo, R. M. Lopez, T. Kodama, and H. Schulzrinne, "Seamless proactive handover across heterogeneous access networks," Springer Wireless Personal Commun., vol. 43, no. 3, pp. 837-855, Nov. 2007. https://doi.org/10.1007/s11277-007-9266-3
  9. Y-S. Kim, D-H. Kwon, and Y-J. Suh, "Seamless handover support over heterogeneous networks using FMIPv6 with definitive L2 triggers," Springer Wireless Personal Commun., vol. 43, no. 3, pp. 919-932, Nov. 2007. https://doi.org/10.1007/s11277-007-9265-4
  10. W.-K. Liao and Y.-C. Chen, "Supporting vertical handover between universal mobile telecommunications system and wireless LAN for real-time services," IET Commun., vol. 2, no. 1, pp. 75-81, Jan. 2008. https://doi.org/10.1049/iet-com:20050368
  11. Y. Wu, K. Yang, L. Zhao, and X. Cheng, "Congestion-aware proactive vertical handoff algorithm in heterogeneous wireless networks," IET Commun., vol. 3, no. 7, pp. 1103-1114, July 2009. https://doi.org/10.1049/iet-com.2008.0451
  12. A. Racz, A. Temesvary, and N. Reider, "Handover performance in 3GPP long term evolution (LTE) systems," in Proc. ISTMWC, July 2007, pp. 1-5.
  13. L. Bajzik, P. Horvath, L. Korossy, and C. Vulkan, "Impact of intra-LTE handover with forwarding on the user connections," in Proc. ISTMWC, July 2007, pp. 1-5.
  14. C-S. Chiu and C-C. Huang, "Improving inter-sector handover user throughput by using partial reuse and softer handover in 3GPP LTE downlink," in Proc. Int. Conf. Advanced Commun. Technol., vol. 1, 2008, pp. 463-467.
  15. M. Anas, F. D. Calabrese, P. E. Ostling, K. I. Pedersen, and P. E. Mogensen, "Performance analysis of handover measurements and layer 3 filtering for UTRAN LTE," in Proc. IEEE PIMRC, Sept. 2007, pp. 1-5.
  16. M. Anas, F. D. Calabrese, P.E. Mogensen, C. Rosa, and K. I. Pedersen, "Performance evaluation of received signal strength based hard handover for UTRAN LTE," in Proc. IEEE VTC, Apr. 2007, pp. 1046-1050.
  17. T-H. Kim, Q. Yang, J-H. Lee, S-G. Park, and Y-S. Shin, "A mobility management technique with simple handover prediction for 3G LTE systems," in Proc. IEEE VTC, Oct. 2007, pp. 259-263.
  18. M. Chang, H. Lee, and M. Lee, "A per-application mobility management platform for application-specific handover decision in overlay networks," Elsevier Comput. Netw., vol. 53, no. 11, pp. 1846-1858, July 2009. https://doi.org/10.1016/j.comnet.2009.02.018
  19. A. Chinchuluun, P. M. Pardalos, A. Migdalas, and L. Pitsoulis, Eds., Pareto Optimality, Game Theory, and Equilibria, Springer Optimization and Its Applications, vol. 17, Springer, 2007.
  20. J. L. Cohon, Multiobjective Programming and Planning, Mathematics in Science and Engineering, Academic Press, 1978.
  21. T. W. Athan and P. Y. Papalambros, "A note on weighted criteria methods for compromise solutions on multiobjective optimization," Engineering Optimization, vol. 27, no. 2, pp. 155-176, 1996. https://doi.org/10.1080/03052159608941404
  22. OPNET Modeler, OPNET Technologies Inc. [Online]. Available: http://www.opnet.com/
  23. C. Smith and D. Collins, "3G Wireless Networks," 5th ed. McGraw-Hill Professional, 2001.
  24. C. Bettstetter, "Mobility modeling in wireless networks: Categorization, smooth movement, border effects," ACM Mobile Comput. Commun. Rev., vol. 5, no. 3, pp. 55-67, July 2001. https://doi.org/10.1145/584051.584056