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Towards a collision-free WLAN: dynamic parameter adjustment in CSMA/E2CA

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dc.contributor.author Barceló Vicens, Jaume
dc.contributor.author Bellalta, Boris
dc.contributor.author Cano Bastidas, Cristina
dc.contributor.author Sfairopoulou, Anna
dc.contributor.author Oliver Riera, Miquel
dc.contributor.author Verma, Kshitiz
dc.date.accessioned 2016-02-16T15:32:04Z
dc.date.available 2016-02-16T15:32:04Z
dc.date.issued 2011
dc.identifier.citation Barcelo J, Bellalta B, Cano C, Sfairopoulou A, Oliver M, Verma K. Towards a collision-free WLAN: dynamic parameter adjustment in CSMA/E2CA. EURASIP Journal on Wireless Communications and Networking. 2011;2011(708617):1-11. DOI: 10.1155/2011/708617.
dc.identifier.issn 1687-1472
dc.identifier.uri http://hdl.handle.net/10230/25840
dc.description.abstract Carrier sense multiple access with enhanced collision avoidance (CSMA/ECA) is a distributed MAC protocol that allows collisionfree/naccess to the medium in WLANs. The only difference between CSMA/ECA and the well-known CSMA/CA is that the former/nuses a deterministic backoff after successful transmissions. Collision-free operation is reached after a transient state during which/nsome collisions may occur. This paper shows that the duration of the transient state can be shortened by appropriately setting the/ncontention parameters. Standard absorbing Markov chain theory is used to describe the behaviour of the system in the transient/nstate and to predict the expected number of slots to reach the collision-free operation. The paper also introduces CSMA/E2CA,/nin which a deterministic backoff is used two consecutive times after a successful transmission. CSMA/E2CA converges quicker to/ncollision-free operation and delivers higher performance than CSMA/ECA, specially in harsh wireless scenarios with high frameerror/nrates. The last part of the paper addresses scenarios with a large number of contenders. We suggest dynamic parameter/nadjustment techniques to accommodate a varying (and potentially high) number of contenders. The effectiveness of these/nadjustments in preventing collisions is validated by means of simulation
dc.description.sponsorship The present paper is the extended version of a MACOM/nworkshop paper. The authors benefited from the feedback/nand discussion in the workshop. The authors are specially/nindebted with N. Abramson for his clarifications regarding/nAloha and with D. Malone for providing recent and/nvaluable references. This work has been partially supported/nby the Spanish Government under Projects nos. TEC2008-/n0655/TEC (GEPETO, Plan Nacional I+D) and CSD2008-/n00010 (COMONSENS, Consolider-Ingenio Program).
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Springer Verlag
dc.relation.ispartof EURASIP Journal on Wireless Communications and Networking. 2011;2011(708617):1-11
dc.rights © 2011 Jaume Barcelo et al. This is an open access article distributed under the Creative Commons Attribution License,/nwhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.title Towards a collision-free WLAN: dynamic parameter adjustment in CSMA/E2CA
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1155/2011/708617
dc.subject.keyword WLAN
dc.subject.keyword MAC
dc.subject.keyword Contention protocol
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/CSD2008-00010
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/TEC2008-0655
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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