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Centralized dynamic frequency allocation for cell-edge demand satisfaction in fractional frequency reuse networks

Author

Listed:
  • Maryum Hina

    (University of Engineering and Technology)

  • Sarmad Sohaib

    (University of Engineering and Technology)

Abstract

Fractional frequency reuse (FFR) has emerged as a well-suited remedy for inter-cell interference reduction in the next-generation networks by allocating frequency reuse factor (FRF) of unity for the cell-center (CC) and higher FRF for the cell-edge (CE) users. However, this strict FFR comes at a cost of equal partitioning of frequency resources to the CE which most likely has varying demands in current networks. In order to mitigate this, we propose a centralized dynamic resource allocation scheme which allocates demand-dependent resources to CE users. The proposed scheme therefore outperforms the fixed allocation scheme of strict FFR for both CC and CE users. Complexity analysis provides a fair means of analyzing the suitability of proposed algorithm. We have also compared the proposed methodology with a reference dynamic fractional frequency reuse (DFFR) scheme. Results show maximum performance gain of up to 30% for 3 reference cells employing Rayleigh fading—through normalized area spectral efficiency (ASE) analysis for both fixed allocation and DFFR. Spectral efficiency analysis also indicates per-cell performance gain for both CC and CE users. Further, detailed three-dimensional ASE plots give insights into the affects to other cells. Due to dynamic nature of traffic loads, the proposed scheme is a candidate solution for satisfying the demands of individual cells.

Suggested Citation

  • Maryum Hina & Sarmad Sohaib, 2017. "Centralized dynamic frequency allocation for cell-edge demand satisfaction in fractional frequency reuse networks," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 65(4), pages 795-808, August.
    • Handle: RePEc:spr:telsys:v:65:y:2017:i:4:d:10.1007_s11235-016-0266-z
    DOI: 10.1007/s11235-016-0266-z
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    Cited by:

    1. Ahmed Murkaz & Riaz Hussain & Junaid Ahmed & Muhammad Adil & Babatunji Omoniwa & Adeel Iqbal, 2018. "An intra–inter-cell device-to-device communication scheme to enhance 5G network throughput with delay modeling," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 69(4), pages 461-475, December.

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