Mobility Robustness in LTE Based on Automatic Neighbor Relation Table

  • Konrad Połys
  • Krzysztof Grochla
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 522)


We evaluate the effect of automatic updates to the LTE Neighbor Relation Table (NRT) to optimize the efficiency of handovers in the network. We propose an algorithm which monitors the handovers within the LTE network and detects events when the procedure was started to early (handover to early) or too late (handover too late). Basing on the observed statistics in Operation and Maintenance server (OAM) the proposed algorithm updates the NRT to maximize the network throughput and minimize the probability of loss of connectivity. Performed simulations show that correctly forbidden handovers can reduce number of unnecessary signaling, reduce risk of fail during handover and reduce the time required to perform the handovers.


LTE ANR Neighbour relation table SON No HO Handover to early 



The work is partially supported by NCBIR Project LIDER/10/194/L-3/11/.


  1. 1.
    Cisco: Cisco visual networking index: global mobile data traffic forecast update 2013–2018. Cisco Public Information (2014)Google Scholar
  2. 2.
    Domański, A., Domańska, J., Czachórski, T.: The impact of self-similarity on traffic shaping in wireless LAN. In: Balandin, S., Moltchanov, D., Koucheryavy, Y. (eds.) NEW2AN 2008. LNCS, vol. 5174, pp. 156–168. Springer, Heidelberg (2008) CrossRefGoogle Scholar
  3. 3.
    Rostański, M., Mushynskyy, T.: Security issues of IPv6 network autoconfiguration. In: Saeed, K., Chaki, R., Cortesi, A., Wierzchoń, S. (eds.) CISIM 2013. LNCS, vol. 8104, pp. 218–228. Springer, Heidelberg (2013) CrossRefGoogle Scholar
  4. 4.
    3rd Generation partnership project: technical specification 25.484, v12.0.0 (2014)Google Scholar
  5. 5.
    Yan, X., Şekercioğlu, Y.A., Narayanan, S.: A survey of vertical handover decision algorithms in fourth generation heterogeneous wireless networks. Comput. Netw. 54(11), 1848–1863 (2010)CrossRefzbMATHGoogle Scholar
  6. 6.
    Grochla, K., Połys, K.: Influence of the handoff threshold hysteresis on heterogeneous wireless network performance. In: Proceedings of 7th International Working Conference HET-NETs (2013)Google Scholar
  7. 7.
    Dhand, P., Dhillon, P.: Handoff optimization for wireless and mobile networks using fuzzy logic. Int. J. Comput. Appl. 63(14), 31–35 (2013)Google Scholar
  8. 8.
    3GPP: Telecommunication management; Study on enhancement of OAM aspects of distributed self-organizing network (SON) functions. TS 32.860, 3rd Generation Partnership Project (3GPP). December 2014Google Scholar
  9. 9.
    Słabicki, M., Grochla, K.: Performance evaluation of SNMP, NETCONF and CWMP management protocols in wireless network (2014)Google Scholar
  10. 10.
    Chrost, L., Grochla, K.: Conservative graph coloring: a robust method for automatic PCI assignment in LTE. In: Kwiecień, A., Gaj, P., Stera, P. (eds.) CN 2013. CCIS, vol. 370, pp. 268–276. Springer, Heidelberg (2013) CrossRefGoogle Scholar
  11. 11.
    Mueller, C.M., Bakker, H., Ewe, L.: Evaluation of the automatic neighbor relation function in a dense urban scenario. In: Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd, pp. 1–5. IEEE (2011)Google Scholar
  12. 12.
    Dahlén, A., Johansson, A., Gunnarsson, F., Moe, J., Rimhagen, T., Kallin, H.: Evaluations of LTE automatic neighbor relations. In: Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd, pp. 1–5. IEEE (2011)Google Scholar
  13. 13.
    Cai, T., van de Beek, J., Sayrac, B., Grimoud, S., Nasreddine, J., Riihijarvi, J., Mahonen, P.: Design of layered radio environment maps for RAN optimization in heterogeneous LTE systems. In: IEEE 22nd International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), pp. 172–176. IEEE (2011)Google Scholar
  14. 14.
    Becvar, Z., Mach, P., Vondra, M.: Self-optimizing neighbor cell list with dynamic threshold for handover purposes in networks with small cells. In: Wireless Communications and Mobile Computing (2013)Google Scholar
  15. 15.
    Watanabe, Y., Matsunaga, Y., Kobayashi, K., Sugahara, H., Hamabe, K.: Dynamic neighbor cell list management for handover optimization in LTE. In: Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd, pp. 1–5. IEEE (2011)Google Scholar
  16. 16.
    Capdevielle, V., Feki, A., Fakhreddine, A.: Self-optimization of handover parameters in LTE networks. In: 11th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks (WiOpt), pp. 133–139. IEEE (2013)Google Scholar
  17. 17.
    Gorawski, M., Grochla, K.: Review of mobility models for performance evaluation of wireless networks. In: Gruca, A., Czachórski, T., Kozielski, S. (eds.) Man-Machine Interactions 3. AISC, vol. 242, pp. 573–584. Springer, Heidelberg (2014) CrossRefGoogle Scholar
  18. 18.
    Openstreetmap project.
  19. 19.
    Rose, D.M., Jansen, T., Werthmann, T., Türke, U., Kürner, T.: The IC 1004 urban hannover scenario-3D pathloss predictions and realistic traffic and mobility patterns. In: European Cooperation in the Field of Scientific and Technical Research, COST IC1004 TD(13)8054 (2013)Google Scholar
  20. 20.
    Rappaport, T.S., et al.: Wireless Communications: Principles and Practice, vol. 2. Prentice Hall PTR, New Jersey (1996)Google Scholar
  21. 21.
    Foremski, P., Gorawski, M., Grochla, K.: Source model of TCP traffic in LTE networks. In: Czachórski, T., Gelenbe, E., Lent, R. (eds.) Information Sciences and Systems 2014, pp. 125–135. Springer, Switzerland (2014)CrossRefGoogle Scholar
  22. 22.
    Fan, J., Yin, Q., Li, G.Y., Peng, B., Zhu, X.: MCS selection for throughput improvement in downlink LTE systems. In: Proceedings of 20th International Conference on Computer Communications and Networks (ICCCN), pp. 1–5. IEEE (2011)Google Scholar
  23. 23.
    Piro, G., Baldo, N., Miozzo, M.: An LTE module for the NS-3 network simulator. In: Proceedings of the 4th International ICST Conference on Simulation Tools and Techniques, pp. 415–422. ICST (Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering) (2011)Google Scholar
  24. 24.
    Kawser, M.T., Hamid, N.I.B., Hasan, M.N., Alam, M.S., Rahman, M.M.: Downlink SNR to CQI mapping for different multiple antenna techniques in LTE. Int. J. Inf. Electron. Eng. 2(5), 757–760 (2012)Google Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Institute of Theoretical and Applied InformaticsPolish Academy of ScienceGliwicePoland

Personalised recommendations