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7th International Conference on Cognitive Radio Oriented Wireless Networks

Research Article

On TDD cross-tier in-band interference mitigation: a practical example

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  • @INPROCEEDINGS{10.4108/icst.crowncom.2012.248599,
        author={Michal Cierny and Risto Wichman and Jyri H\aa{}m\aa{}l\aa{}inen and Cassio Ribeiro and Zhi Ding and Xin Liu},
        title={On TDD cross-tier in-band interference mitigation: a practical example},
        proceedings={7th International Conference on Cognitive Radio Oriented Wireless Networks},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2012},
        month={7},
        keywords={heterogeneous networks femtocell macrocell power control},
        doi={10.4108/icst.crowncom.2012.248599}
    }
    
  • Michal Cierny
    Risto Wichman
    Jyri Hämäläinen
    Cassio Ribeiro
    Zhi Ding
    Xin Liu
    Year: 2012
    On TDD cross-tier in-band interference mitigation: a practical example
    CROWNCOM
    IEEE
    DOI: 10.4108/icst.crowncom.2012.248599
Michal Cierny1, Risto Wichman1,*, Jyri Hämäläinen1, Cassio Ribeiro2, Zhi Ding3, Xin Liu3
  • 1: Aalto university
  • 2: Nokia research center
  • 3: University of California, Davis
*Contact email: risto.wichman@aalto.fi

Abstract

This work considers in-band interference that appears in two-tier macro/femto cellular networks when macrocells and femtocells operate on the same frequency band. We focus on the time division duplex (TDD) mode where uplink-downlink nterference occurs if time sharing between uplink and downlink are different in the overlaying macrocell and underlying femtocells. We derive an optimal power control based solution for a simple example scenario and then propose an extension for general multicell/multilink network. Finally, we show through simulations that the proposed solution can be used to mitigate the outage in the femtocell uplink without harming the macrocell layer.

Keywords
heterogeneous networks femtocell macrocell power control
Published
2012-07-24
Publisher
IEEE
http://dx.doi.org/10.4108/icst.crowncom.2012.248599
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