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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Distributed Resource Allocation in Two-Hierarchy Networks

  • Liu, Shuhui (School of Information and Communications Engineering, Beijing University of Posts and Telecommunications) ;
  • Chang, Yongyu (School of Information and Communications Engineering, Beijing University of Posts and Telecommunications) ;
  • Wang, Guangde (School of Information and Communications Engineering, Beijing University of Posts and Telecommunications) ;
  • Yang, Dacheng (School of Information and Communications Engineering, Beijing University of Posts and Telecommunications)
  • Received : 2011.07.15
  • Accepted : 2011.09.15
  • Published : 2012.04.04
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Abstract

In this paper, a new distributed resource allocation algorithm is proposed to alleviate the cross-tier interference for orthogonal frequency division multiplexing access macrocell and femtocell overlay. Specifically, the resource allocation problem is modeled as a non-cooperative game. Based on game theory, we propose an iterative algorithm between subchannel and power allocation called distributed resource allocation which requires no coordination among the two-hierarchy networks. Finally, a macrocell link quality protection process is proposed to guarantee the macrocell UE's quality of service to avoid severe cross-tier interference from femtocells. Simulation results show that the proposed algorithm can achieve remarkable performance gains as compared to the pure waterfilling algorithm.

Keywords

References

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