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Mobile Networks and Applications

, Volume 22, Issue 5, pp 806–813 | Cite as

Analysis of Two-Tier LTE Network with Randomized Resource Allocation and Proactive Offloading

  • Aleksandar Ichkov
  • Vladimir Atanasovski
  • Liljana Gavrilovska
Article
  • 152 Downloads

Abstract

Heterogeneity in cellular networks comprising multiple base stations’ types imposes new challenges in network planning and deployment. Radio Resource Management (RRM) techniques such as dynamic sharing of the available resources and advanced user association strategies determine the overall network capacity and efficiency. This paper targets a two-tier heterogeneous LTE network consisting of macro and femto tiers. It introduces randomization of the allocated resources on the femto tier, novel proactive offloading scheme in the user association phase and a novel femto tier access control. System level simulation results in terms of rate distribution, i.e. the percentage of users that achieve certain rate in the system, show that an optimal RRM strategy can be designed for different network scenarios. The proposed proactive offloading scheme in the association phase improves the performance of the congested networks by efficiently utilizing the available femto tier resources. Moreover, the introduced femto hybrid access allows up to 20 times higher data rates for the authorized users, compared to the non-authorized users in the network.

Keywords

Heterogeneous networks Femtocells Randomized RRM Proactive offloading Access control 

Notes

Acknowledgments

This work was performed within the NATO SfP-984409 project “Optimization and Rational Use of Wireless Communications Bands” (ORCA). The authors would like to thank everyone involved.

References

  1. 1.
    Gavrilovska L et al. (2015) Visions towards 5G: technical requirements and potential enablers. Springer Journal on Wireless Personal Communications 87(3):731–757Google Scholar
  2. 2.
    N. Bhushan et al. (2014) Network densification: the dominant theme for wireless evolution into 5G, IEEE Commun Mag Google Scholar
  3. 3.
    Andrews JG et al. (2013) Femtocells: past, present and future. JSAC 30(3):497–508Google Scholar
  4. 4.
    B. Nui et al. (2013) The design of resource management mechanism with hybrid access in a macro-femto system, IEEE Globecom 4679–4685. doi: 10.1109/GLOCOMW.2013.6855690
  5. 5.
    S. N. Chiu, D. Stoyan, W. S. Kendall, J. Mecke (2013) Stochastic geometry and its applications, 3rd Edition, p 582Google Scholar
  6. 6.
    Ali MS (2015) An overview on interference management in 3gpp lte-advanced heterogeneous networks. Int J Futur Commun Netw 8(1)Google Scholar
  7. 7.
    H. ElSawy, E. Hossain and M. Haenggi (2013) Stochastic geometry for modeling, analysis, and design of multi-tier and cognitive cellular wireless networks: a survey. in IEEE Commun Surv Tutorials, vol. 15, no. 3, pp. 996–1019, Third QuarterGoogle Scholar
  8. 8.
    Dhillon HS et al. (2012) Modeling and analysis of K-Tier downlink heterogeneous cellular networks. IEEE JSAC 30(3):550–560Google Scholar
  9. 9.
    Dhillon HS, Andrews JG (2014) Downlink rate distribution in heterogeneous cellular networks under generalized cell selection. IEEE Wireless Comm Lett 3(1):42–45Google Scholar
  10. 10.
    Andrews JG (2013) Seven ways that hetnets are a cellular paradigm shift. IEEE Comm Magazine 51(3):136–144Google Scholar
  11. 11.
    H. S. Dhillion et al. (2013) Load-aware modeling and analysis of heterogeneous cellular networks. IEEE Trans Wireless Comm. https://arxiv.org/pdf/1204.1091v3.pdf
  12. 12.
    Y. J. Sang and K. S. Kim (2014) Load distribution heterogeneous cellular networks. IEEE Comm Lett 18(2):237–240Google Scholar
  13. 13.
    S. Singh, H. S. Dhillon and J. G. Andrews (2013) Offloading in heterogeneous networks: modeling, analysis and design insights, IEEE Trans Wireless CommunGoogle Scholar
  14. 14.
    G. de la Roche et al. (2009) Access control mechanisms for femtocells. IEEE Comm Mag 48(1):33–39Google Scholar
  15. 15.
    Cheung WC, Quek TQS, Kountouris M (2012) Throughput optimization, spectrum allocation, and access control in two-tier femtocell networks. IEEE J Sel Areas Commun 30(3):561–574CrossRefGoogle Scholar
  16. 16.
    Jeanette Wannstrom and Keith Mallinson. Heterogeneous networks in LTE, available at: http://www.3gpp.org/technologies/keywords-acronyms/1576-hetnet

Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Aleksandar Ichkov
    • 1
  • Vladimir Atanasovski
    • 1
  • Liljana Gavrilovska
    • 1
  1. 1.Faculty of Electrical Engineering and Information TechnologiesSs. Cyril and Methodius University in SkopjeSkopjeMacedonia

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