Channel load aware AP / extender selection in home WiFi networks using IEEE 802.11k/v
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- dc.contributor.author Adame, Toni
- dc.contributor.author Carrascosa Zamacois, Marc
- dc.contributor.author Bellalta, Boris
- dc.contributor.author Pretel, Iván
- dc.contributor.author Etxebarria, Iñaki
- dc.date.accessioned 2021-03-29T08:32:48Z
- dc.date.available 2021-03-29T08:32:48Z
- dc.date.issued 2021
- dc.description.abstract Next-generation Home WiFi networks have to step forward in terms of performance. New applications such as on-line games, virtual reality or high quality video contents will further demand higher throughput levels, as well as low latency. Beyond physical (PHY) and medium access control (MAC) improvements, deploying multiple access points (APs) in a given area may significantly contribute to achieve those performance goals by simply improving average coverage and data rates. However, it opens a new challenge: to determine the best AP for each given station (STA). This article studies the achievable performance gains of using secondary APs, also called Extenders, in Home WiFi networks in terms of throughput and delay. To do that, we introduce a centralized, easily implementable channel load aware selection mechanism for WiFi networks that takes full advantage of IEEE 802.11k/v capabilities to collect data from STAs, and distribute association decisions accordingly. These decisions are completely computed in the AP (or, alternatively, in an external network controller) based on an AP selection decision metric that, in addition to RSSI, also takes into account the load of both access and backhaul wireless links for each potential STA-AP/Extender connection. Performance evaluation of the proposed channel load aware AP and Extender selection mechanism has been first conducted in a purpose-built simulator, resulting in an overall improvement of the main analyzed metrics (throughput and delay) and the ability to serve, at least, 35% more traffic while keeping the network uncongested when compared to the traditional RSSI-based WiFi association. This trend was confirmed when the channel load aware mechanism was tested in a real deployment, where STAs were associated to the indicated AP/Extender and total throughput was increased by 77.12%.
- dc.description.sponsorship This work was supported in part by the Spanish government under Project CDTI IDI-20180274, Project WINDMAL PGC2018-099959-B-100 (MCIU/AEI/FEDER,UE), and Project TEC2016-79510-P; and in part by the Catalan government under Project SGR-2017-1188 and Project SGR-2017-1739.
- dc.format.mimetype application/pdf
- dc.identifier.citation Adame T, Carrascosa M, Bellalta B, Pretel I, Etxebarria I. Channel load aware AP / extender selection in home WiFi networks using IEEE 802.11k/v. IEEE Access. 2021 Feb 21;9:30095-112. DOI: 10.1109/ACCESS.2021.3059473
- dc.identifier.doi http://dx.doi.org/10.1109/ACCESS.2021.3059473
- dc.identifier.issn 2169-3536
- dc.identifier.uri http://hdl.handle.net/10230/46976
- dc.language.iso eng
- dc.publisher Institute of Electrical and Electronics Engineers (IEEE)
- dc.relation.ispartof IEEE Access. 2021 Feb 21;9:30095-112
- dc.relation.projectID info:eu-repo/grantAgreement/ES/1PE/TEC2016-79510-P
- dc.rights This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/
- dc.rights.accessRights info:eu-repo/semantics/openAccess
- dc.rights.uri https://creativecommons.org/licenses/by/4.0/
- dc.subject.keyword Wireless fidelity
- dc.subject.keyword Throughput
- dc.subject.keyword Probes
- dc.subject.keyword Measurement
- dc.subject.keyword IEEE 802.11 Standard
- dc.subject.keyword Delays
- dc.subject.keyword Internet
- dc.title Channel load aware AP / extender selection in home WiFi networks using IEEE 802.11k/v
- dc.type info:eu-repo/semantics/article
- dc.type.version info:eu-repo/semantics/publishedVersion