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Subcarrier Allocation for LTE Soft Frequency Reuse Based on Graph Colouring

  • Krzysztof Grochla
  • Konrad Połys
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 363)

Abstract

The paper discusses the parametrization of Soft Frequency Reuse (SFR) method to minimize the inter-cell interference. The optimization method to select the subcarrier allocation based on graph colouring is proposed. It is evaluated using numerical model for uniform (honeycomb) and non-uniform (based on sample deployed network) network topologies. The results prove that the proposed optimization method can significantly improve (up to 20 %) the throughput comparing to the random subcarrier allocation. We also show that selection of scheduling policy determines the optimal sub-band allocation and different SFR configuration should be used for different types of schedulers.

Keywords

LTE Soft frequency reuse SFR Graph colouring Inter-cell interferences Scheduling 

Notes

Acknowledgments

This work was funded by the Polish National Centre for Research and Development, grant no LIDER/10/194/L-3/11, http://projekty.iitis.pl/zosb.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Institute of Theoretical and Applied Informatics of PASGliwicePoland

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