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Load-aware spectrum distribution in wireless LANs

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by Thomas Moscibroda , Ranveer Ch , Yunnan Wu , Sudipta Sengupta , Paramvir Bahl , Yuan Yuan
Venue:In ICNP’08
Citations:17 - 0 self
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BibTeX

@INPROCEEDINGS{Moscibroda_load-awarespectrum,
    author = {Thomas Moscibroda and Ranveer Ch and Yunnan Wu and Sudipta Sengupta and Paramvir Bahl and Yuan Yuan},
    title = {Load-aware spectrum distribution in wireless LANs},
    booktitle = {In ICNP’08},
    year = {}
}

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Abstract

Abstract—Traditionally, the channelization structure in IEEE 802.11-based Wireless LANs has been fixed: Each access point (AP) is assigned one channel and all channels are equally wide. In contrast, it has recently been shown that even on commodity hardware, the channel-width can be adapted dynamically purely in software. Leveraging this capability, we study the use of dynamic-width channels, where every AP adaptively adjusts not only its center-frequency, but also its channel-width to match its traffic load. This gives raise to a novel optimization problem that differs from previously studied channel assignment problems. We propose efficient spectrum-distribution algorithms and evaluate their effectiveness through analysis and simulations using realworld traces. Our results indicate that by allocating more spectrum to highly-loaded APs, the overall spectrum-utilization can be substantially improved and the notorious load-balancing problem in WLANs can be solved naturally. I.

Citations

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1 Distributed Self-stabalizing Placement of Replicated Resources in Emerging Networks - Ko, Rubenstein
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