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Joo, Changhee
Learning, Modeling, and Networking
Research Interests
  • Learning, modeling, networking, resource allocation, stochastic optimization, distributed computing, low complexity

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Location-based spectrum allocation and partitioning scheme for cross-tier interference mitigation in macro-femtocell networks

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Title
Location-based spectrum allocation and partitioning scheme for cross-tier interference mitigation in macro-femtocell networks
Author
Ryoo, SunheuiJoo, ChangheeBahk, Saewoong
Keywords
Beamforming; Cross-tier interference mitigation; Decentralized algorithm; Femtocell; Location-based; Spectrum allocation
Issue Date
201310
Publisher
ELSEVIER SCIENCE BV
Citation
COMPUTER NETWORKS, v.57, no.15, pp.2869 - 2879
Abstract
In this paper, we address the cross-tier interference problem in a two-tier network which consists of overlaid femtocells within a macrocell range. In the considered network, macro and femto base stations are assumed with the capabilities of power control and beamforming, differently from user terminals. Under such environments, we devise a decentralized solution where each femtocell determines whether to use shared spectrum or partitioned spectrum, considering users' location information. Introducing two simple distance thresholds, we can optimally partition the spectrum and allocate them without detailed channel information. Simulation results demonstrate that our decentralized scheme achieves comparable performance to the centralized one with low overhead and feedback delay.
URI
http://scholarworks.unist.ac.kr/handle/201301/3260
DOI
http://dx.doi.org/10.1016/j.comnet.2012.11.015
ISSN
1389-1286
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