WLAN Channel Selection Without Communication

Leith, Douglas J. and Clifford, P. and Malone, D.W. (2012) WLAN Channel Selection Without Communication. Computer Networks, 56 (4). pp. 1424-1441. ISSN 1389-1286

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In this paper we consider how a group of wireless access-points can self-configure their channel choice so as to avoid interference between one another and thereby maximise network capacity. We make the observation that communication between access points is not necessary, although it is a feature of almost all published channel allocation algorithms. We argue that this observation is of key practical importance as, except in special circumstances, interfering WLANs need not all lie in the same administrative domain and/or may be beyond wireless communication distance (although within interference distance). We demonstrate the feasibility of the communicationfree paradigm via a new class of decentralized algorithms that are simple, robust and provably correct for arbitrary interference graphs. The algorithm requires only standard hardware and we demonstrate its effectiveness via experimental measurements.

Item Type: Article
Additional Information: Preprint of article submitted to Elsevier. The final version of this article is published in Computer Networks Vol.56 No.4(2012), pp.1424–1441. DOI: j.comnet.2011.12.015
Keywords: 802.11; WLAN; Channel allocation;
Academic Unit: Faculty of Science and Engineering > Research Institutes > Hamilton Institute
Item ID: 3755
Depositing User: Dr. David Malone
Date Deposited: 13 Jun 2012 15:24
Journal or Publication Title: Computer Networks
Publisher: Elsevier
Refereed: No

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