Publication:
Providing service guarantees in 802.11e EDCA WLANs with legacy stations

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Telemáticaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Network Technologieses
dc.contributor.authorBanchs Roca, Albert
dc.contributor.authorSerrano Yáñez-Mingot, Pablo
dc.contributor.authorVollero, Luca
dc.date.accessioned2012-03-06T15:20:40Z
dc.date.available2012-03-06T15:20:40Z
dc.date.issued2010-08
dc.description.abstractAlthough the EDCA access mechanism of the 802.11e standard supports legacy DCF stations, the presence of DCF stations in the WLAN jeopardizes the provisioning of the service guarantees committed to the EDCA stations. The reason is that DCF stations compete with Contention Windows (CWs) that are predefined and cannot be modified, and as a result, the impact of the DCF stations on the service received by the EDCA stations cannot be controlled. In this paper, we address the problem of providing throughput guarantees to EDCA stations in a WLAN in which EDCA and DCF stations coexist. To this aim, we propose a technique that, implemented at the Access Point (AP), mitigates the impact of DCF stations on EDCA by skipping with a certain probability the Ack reply to a frame from a DCF station. When missing the Ack, the DCF station increases its CW, and thus, our technique allows us to have some control over the CWs of the legacy DCF stations. In our approach, the probability of skipping an Ack frame is dynamically adjusted by means of an adaptive algorithm. This algorithm is based on a widely used controller from classical control theory, namely a Proportional Controller. In order to find an adequate configuration of the controller, we conduct a control-theoretic analysis of the system. Simulation results show that the proposed approach is effective in providing throughput guarantees to EDCA stations in presence of DCF stations.
dc.description.sponsorshipEuropean Community's Seventh Framework Program
dc.description.sponsorshipPartly funded by the Ministry of Science and Innovation of Spain, under the QUARTET project (TIN2009-13992-C02-01)
dc.description.statusPublicado
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationIEEE Transactions on Mobile Computing, (August 2010), 9 (8), 1057-1071.
dc.identifier.doihttps://www.doi.org/10.1109/TMC.2010.52
dc.identifier.issn1536-1233
dc.identifier.publicationfirstpage1057
dc.identifier.publicationissue8
dc.identifier.publicationlastpage1071
dc.identifier.publicationtitleIEEE Transactions on Mobile Computing
dc.identifier.publicationvolume9
dc.identifier.urihttps://hdl.handle.net/10016/13705
dc.language.isoeng
dc.publisherIEEE
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/214994
dc.relation.publisherversionhttp://dx.doi.org/10.1109/TMC.2010.52
dc.rights© IEEE
dc.rights.accessRightsopen access
dc.subject.ecienciaTelecomunicaciones
dc.subject.otherWLAN
dc.subject.other802.11
dc.subject.other802.11e
dc.subject.otherEDCA
dc.subject.otherDCF
dc.subject.otherACKS
dc.subject.otherLegacy stations
dc.subject.otherThroughput guarantees
dc.subject.otherControl theory
dc.titleProviding service guarantees in 802.11e EDCA WLANs with legacy stations
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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