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Modelling and Analysis of Wi-Fi and LAA Coexistence with Priority Classes
Indian Institute of Technology, Hyderabad, India.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology. Mid Sweden University.ORCID iD: 0000-0003-1550-7595
Indian Institute of Technology, Hyderabad, India.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.ORCID iD: 0000-0003-0873-7827
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2018 (English)In: 2018 14th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), IEEE, 2018Conference paper, Published paper (Refereed)
Abstract [en]

The Licensed Assisted Access (LAA) is shown asa required technology to avoid overcrowding of the licensedbands by the increasing cellular traffic. Proposed by 3GPP,LAA uses a Listen Before Talk (LBT) and backoff mechanismsimilar to Wi-Fi. While many mathematical models have beenproposed to study the problem of the coexistence of LAAand Wi-Fi systems, few have tackled the problem of QoSprovisioning, and in particular analysed the behaviour of thevarious classes of priority available in Wi-Fi and LAA. Thispaper presents a new mathematical model to investigate theperformance of different priority classes in coexisting Wi-Fi andLAA networks. Using Discrete Time Markov Chains, we modelthe saturation throughput of all eight priority classes used byWi-Fi and LAA. The numerical results show that with the 3GPPproposed parameters, a fair coexistence between Wi-Fi and LAAcannot be achieved. Wi-Fi users in particular suffer a significantdegradation of their performance caused by the collision withLAA transmissions which has a longer duration compared toWi-Fi transmissions.

Place, publisher, year, edition, pages
IEEE, 2018.
Keywords [en]
EDCA, Wi-Fi, Coexistence, QoS, LAA
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:miun:diva-34717DOI: 10.1109/WiMOB.2018.8589150ISI: 000459858400038Scopus ID: 2-s2.0-85060783880ISBN: 978-1-5386-6876-4 (electronic)OAI: oai:DiVA.org:miun-34717DiVA, id: diva2:1255600
Conference
The 14th International Conference on Wireless and Mobile Computing, Networking and Communications, Limassol, Cyprus, during October, 2018.
Projects
TIMELINESSSMART (Smarta system och tjänster för ett effektivt och innovativt samhälle)
Funder
Knowledge FoundationAvailable from: 2018-10-12 Created: 2018-10-12 Last updated: 2019-09-09Bibliographically approved

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Beltramelli, LucaGidlund, MikaelGuntupalli, Lakshmikanth

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