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Resource Allocation with Partitioning Criterion for Macro-Femto Overlay Cellular Networks with Fractional Frequency Reuse

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Abstract

The interference mitigation technique based on fractional frequency reuse (FFR) provides improved cell-edge performance with similar overall cell capacity as that of systems with the frequency reuse factor of one. Furthermore, frequency sub-band allocation by FFR has the benefit of allowing flexibility for the deployment of femto-cells through frequency partitioning. Determination of a proper frequency partitioning criterion between the cell-center and the cell-edge, and between the cells with femto-cells is an important issue. In addition, time resource partitioning introduces another degree of freedom to the design of time-frequency resource allocation. In this paper, we propose a novel time-frequency resource allocation mechanism using FFR for a macro-femto overlay cellular network. Feasible frequency sub-band and time resource is allocated to the cell-center and the cell-edge region in a cell by the proposed partitioning criterion and the time partitioning ratio. We provide a guideline for how to determine the partitioning criterion for the regions and how to design the amount of time resource. We derive the average capacity of macro-cells and femto-cells, and introduce a new harmonic mean metric to maximize the average capacity of the regions while achieving the fairness among users in a cell.

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Authors and Affiliations

  1. School of Information and Communication Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea

    Chang-Yeong Oh, Min Young Chung, Hyunseung Choo & Tae-Jin Lee

Authors
  1. Chang-Yeong Oh
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  2. Min Young Chung
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  3. Hyunseung Choo
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  4. Tae-Jin Lee
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Corresponding author

Correspondence to Tae-Jin Lee.

Additional information

A preliminary version of this work was presented at ICCSA’10 [18].

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Oh, CY., Chung, M.Y., Choo, H. et al. Resource Allocation with Partitioning Criterion for Macro-Femto Overlay Cellular Networks with Fractional Frequency Reuse. Wireless Pers Commun 68, 417–432 (2013). https://doi.org/10.1007/s11277-011-0459-4

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  • DOI: https://doi.org/10.1007/s11277-011-0459-4

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