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ORLA/OLAA: Orthogonal Coexistence of LAA and WiFi in Unlicensed Spectrum

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Telemáticaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Network Technologieses
dc.contributor.authorGarcía Saavedra, Andrés
dc.contributor.authorPatras, Paul
dc.contributor.authorValls, Víctor
dc.contributor.authorCosta Pérez, Xavier
dc.contributor.authorLeith, Douglas J.
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2019-05-28T09:51:03Z
dc.date.available2019-05-28T09:51:03Z
dc.date.issued2018-11-12
dc.description.abstractFuture mobile networks will exploit unlicensed spectrum to boost capacity and meet growing user demands cost-effectively. The 3rd Generation Partnership Project (3GPP) has recently defined a License Assisted Access (LAA) scheme to enable global Unlicensed LTE (U-LTE) deployment, aiming at 1) ensuring fair coexistence with incumbent WiFi networks, i.e., impacting on their performance no more than another WiFi device; and 2) achieving superior airtime efficiency as compared with WiFi. We show the standardized LAA fails to simultaneously fulfill these objectives, and design an alternative orthogonal (collision-free) listen-before-talk coexistence paradigm that provides a substantial improvement in performance, yet imposes no penalty on existing WiFi networks. We derive two optimal transmission policies, ORLA and OLAA, that maximize LAA throughput in both asynchronous and synchronous (i.e., with alignment to licensed anchor frame boundaries) modes of operation, respectively. We present a comprehensive evaluation through which we demonstrate that, when aggregating packets, IEEE 802.11ac WiFi can be more efficient than LAA, whereas our proposals attains 100% higher throughput, without harming WiFi. We further show that long U-LTE frames incur up to 92% throughput losses on WiFi when using 3GPP LAA, whilst ORLA/OLAA sustain >200% gains at no cost, even in the presence of non-saturated WiFi and/or in multi-rate scenarios.en
dc.description.sponsorshipThis work was supported in part by the EC H2020 5G-Transformer Project under Grant 761536.en
dc.format.extent16
dc.identifier.bibliographicCitationGarcía Saavedra, A., Patras, P., Valls, V., Costa Pérez, X. y Leith., D.J. (2018). ORLA/OLAA: Orthogonal Coexistence of LAA and WiFi in Unlicensed Spectrum. IEEE/ACM Transactions on Networking, 26 (6), pp. 2665-2678.en
dc.identifier.doihttps://www.doi.org/10.1109/TNET.2018.2876590
dc.identifier.issn1063-6692
dc.identifier.publicationfirstpage2665
dc.identifier.publicationissue6
dc.identifier.publicationlastpage2678
dc.identifier.publicationtitleIEEE/ACM Transactions on Networkingen
dc.identifier.publicationvolume26
dc.identifier.urihttps://hdl.handle.net/10016/28424
dc.language.isoengen
dc.publisherIEEEen
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/761536 (5G-Transformer)en
dc.rights© 2018 IEEE.en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaTelecomunicacioneses
dc.subject.otherCoexistenceen
dc.subject.otherSpectrum sharingen
dc.subject.otherUnlicensed LTEen
dc.subject.otherLTE-Uen
dc.subject.otherLAAen
dc.subject.otherWiFien
dc.subject.otherListen-before-talken
dc.titleORLA/OLAA: Orthogonal Coexistence of LAA and WiFi in Unlicensed Spectrumen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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