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Uplink Interference Avoidance Scheme to Improve Femtocell Performance in Heterogeneous Cellular Networks
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 Title & Authors
Uplink Interference Avoidance Scheme to Improve Femtocell Performance in Heterogeneous Cellular Networks
Kwon, Jung Hyoung; Sang, Young Jin; Kim, Kwang Soon;
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This paper proposes a cross-tier interference avoidance scheme to improve femtocell performance in single frequency heterogeneous cellular networks (SFHCN). The scheduled macrocell users located close femtocell base stations cause serious interference to those femtocells so that the performance of femtocell is dramatically deteriorated. To solve this problem, this paper proposes an interference avoidance scheme by reversing the uplink and downlink frames of such femtocells. After reversing the uplink and downlink frames, femtocell base station relays the macrocell user data as well as transmitting its own data. In the 1st relaying link, femtocell and macrocell users transmit their data respectively divided uplink frames and in the 2nd relaying link, femtocell base station transmit macrocell and femtocell data using a simultaneously superposition coding scheme. Computer simulation results confirm performance improvement of proposed scheme.
Femtocell;Uplink Interference Avoidance;Heterogeneous Cellular Networks;
 Cited by
펨토셀시스템 자원 최적화를 위한 게임이론 기반 기지국 선택 기법,장정규;손인수;

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