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WiMCA: multi-indicator client association in software-defined Wi-Fi networks
University of Castilla-La Mancha, Spain.
i2CAT Foundation, Spain.
University of Castilla-La Mancha, Spain.
RISE Research Institutes of Sweden, Digitala system, Datavetenskap.ORCID-id: 0000-0002-8329-2779
Vise andre og tillknytning
2021 (engelsk)Inngår i: Wireless networks, ISSN 1022-0038, E-ISSN 1572-8196, Vol. 27, s. 3109-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In a world with increasing traffic demands, wireless technologies aim to meet them by means of new Radio Access Technologies that provide faster connectivity. Such is the case of 4G and 5G. However, in indoor scenarios, where the capabilities of these technologies are significantly affected by the distance to the base station and the materials used in the construction of buildings, Wi-Fi is still the technology of reference thanks to its low cost and easy deployment. In this context, it is usual to find multi-AP Wi-Fi networks whose deployment has been carefully planned. However, the user-AP association decision procedure is not defined by the IEEE 802.11 standard. As a result, vendors choose selfish approaches based on signal strength. This leads to uneven user distributions and nonoptimal resource utilization. To deal with this, densification has been used over the years, but this is expensive as it needs more infrastructure. Moreover, this results in more APs in the same collision domain. To avoid the need for densification, in this paper we introduce WiMCA, a joint SDN-based user association and channel assignment solution for Wi-Fi networks that considers signal strength, channel occupancy and AP load to make better association decisions. Experimental results have demonstrated that, in terms of aggregated goodput, WiMCA outperforms approaches based on signal strength by 55%, providing better user level fairness and accommodating more users and traffic before reaching the point at which densification is needed. © 2021, The Author(s)

sted, utgiver, år, opplag, sider
Springer , 2021. Vol. 27, s. 3109-
Emneord [en]
IEEE 802.11, Load balancing, Mobility management, SDN, User association, Wi-Fi, Densification, IEEE Standards, Mobile telecommunication systems, Radio access networks, Wireless local area networks (WLAN), Channel Assignment, Collision domains, Construction of buildings, Decision procedure, IEEE 802.11 standards, Radio access technologies, Resource utilizations, Wireless technologies, 4G mobile communication systems
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Identifikatorer
URN: urn:nbn:se:ri:diva-53480DOI: 10.1007/s11276-021-02636-9Scopus ID: 2-s2.0-85105943759OAI: oai:DiVA.org:ri-53480DiVA, id: diva2:1562774
Tilgjengelig fra: 2021-06-09 Laget: 2021-06-09 Sist oppdatert: 2022-02-23bibliografisk kontrollert

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