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


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.


Heterogeneous networks Femtocells Randomized RRM Proactive offloading Access control 



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.


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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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