Spatial reuse in IEEE 802.11ax WLANs

Dealing with massively crowded scenarios is one of the most ambitious goals of next-generation wireless networks. With this goal in mind, the IEEE 802.11ax amendment includes, among other techniques, the Spatial Reuse (SR) operation. The SR operation encompasses a set of unprecedented techniques tha...

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Autores: Wilhelmi Roca, Francesc, Barrachina Muñoz, Sergio, Cano Bastidas, Cristina, Selinis, Ioannis, Bellalta, Boris
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Universitat Pompeu Fabra
Repositorio:Repositorio Digital de la UPF
OAI Identifier:oai:repositori.upf.edu:10230/47051
Acceso en línea:http://hdl.handle.net/10230/47051
http://dx.doi.org/10.1016/j.comcom.2021.01.028
Access Level:acceso abierto
Palabra clave:Dense deployment
IEEE 802.11ax WLAN
Next-generation networks
Performance evaluation
Spatial Reuse
Tutorial
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spelling Spatial reuse in IEEE 802.11ax WLANsWilhelmi Roca, FrancescBarrachina Muñoz, SergioCano Bastidas, CristinaSelinis, IoannisBellalta, BorisDense deploymentIEEE 802.11ax WLANNext-generation networksPerformance evaluationSpatial ReuseTutorialDealing with massively crowded scenarios is one of the most ambitious goals of next-generation wireless networks. With this goal in mind, the IEEE 802.11ax amendment includes, among other techniques, the Spatial Reuse (SR) operation. The SR operation encompasses a set of unprecedented techniques that are expected to significantly boost Wireless Local Area Networks (WLANs) performance in dense environments. In particular, the main objective of the SR operation is to maximize the utilization of the medium by increasing the number of parallel transmissions. Nevertheless, due to the novelty of the operation, its performance gains remain largely unknown. In this paper, we first provide a gentle tutorial of the SR operation included in the IEEE 802.11ax. Then, we analytically model SR and delve into the new kinds of MAC-level interactions among network devices. Finally, we provide a simulation-driven analysis to showcase the potential of SR in various deployments, comprising different network densities and traffic loads. Our results show that the SR operation can significantly improve the medium utilization, especially in scenarios under high interference conditions. Moreover, our results demonstrate the non-intrusive design characteristic of SR, which allows enhancing the number of simultaneous transmissions with a low impact on the environment. We conclude the paper by giving some thoughts on the main challenges and limitations of the IEEE 802.11ax SR operation, including research gaps and future directions.This work has been partially supported by the Spanish Ministry of Economy and Competitiveness under the Maria de Maeztu Units of Excellence Programme (MDM-2015-0502), by PGC2018-099959-B-100 (MCIU/AEI/FEDER,UE), by the Catalan Government under SGR grant for research support (2017-SGR-11888), by SPOTS project (RTI2018-095438-AI00) funded by the Spanish Ministry of Science, Innovation and Universities, and by a Gift from the Cisco University Research Program (CG#890107, Towards Deterministic Channel Access in High-Density WLANs) Fund, a corporate advised fund of Silicon Valley Community Foundation. The authors would like to thank Malcolm Smith and Adrian Garcia for their thorough reviews and insightful comments.Elsevier20212021info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/10230/47051http://dx.doi.org/10.1016/j.comcom.2021.01.028reponame:Repositorio Digital de la UPFinstname:Universitat Pompeu FabraInglésComputer Communications. 2021 Mar 15;170:65-83info:eu-repo/grantAgreement/ES/2PE/PGC2018-099959-B-100info:eu-repo/grantAgreement/ES/2PE/RTI2018-095438-AI00© Elsevier http://dx.doi.org/10.1016/j.comcom.2021.01.028info:eu-repo/semantics/openAccessoai:repositori.upf.edu:10230/470512026-06-12T07:21:37Z
dc.title.none.fl_str_mv Spatial reuse in IEEE 802.11ax WLANs
title Spatial reuse in IEEE 802.11ax WLANs
spellingShingle Spatial reuse in IEEE 802.11ax WLANs
Wilhelmi Roca, Francesc
Dense deployment
IEEE 802.11ax WLAN
Next-generation networks
Performance evaluation
Spatial Reuse
Tutorial
title_short Spatial reuse in IEEE 802.11ax WLANs
title_full Spatial reuse in IEEE 802.11ax WLANs
title_fullStr Spatial reuse in IEEE 802.11ax WLANs
title_full_unstemmed Spatial reuse in IEEE 802.11ax WLANs
title_sort Spatial reuse in IEEE 802.11ax WLANs
dc.creator.none.fl_str_mv Wilhelmi Roca, Francesc
Barrachina Muñoz, Sergio
Cano Bastidas, Cristina
Selinis, Ioannis
Bellalta, Boris
author Wilhelmi Roca, Francesc
author_facet Wilhelmi Roca, Francesc
Barrachina Muñoz, Sergio
Cano Bastidas, Cristina
Selinis, Ioannis
Bellalta, Boris
author_role author
author2 Barrachina Muñoz, Sergio
Cano Bastidas, Cristina
Selinis, Ioannis
Bellalta, Boris
author2_role author
author
author
author
dc.subject.none.fl_str_mv Dense deployment
IEEE 802.11ax WLAN
Next-generation networks
Performance evaluation
Spatial Reuse
Tutorial
topic Dense deployment
IEEE 802.11ax WLAN
Next-generation networks
Performance evaluation
Spatial Reuse
Tutorial
description Dealing with massively crowded scenarios is one of the most ambitious goals of next-generation wireless networks. With this goal in mind, the IEEE 802.11ax amendment includes, among other techniques, the Spatial Reuse (SR) operation. The SR operation encompasses a set of unprecedented techniques that are expected to significantly boost Wireless Local Area Networks (WLANs) performance in dense environments. In particular, the main objective of the SR operation is to maximize the utilization of the medium by increasing the number of parallel transmissions. Nevertheless, due to the novelty of the operation, its performance gains remain largely unknown. In this paper, we first provide a gentle tutorial of the SR operation included in the IEEE 802.11ax. Then, we analytically model SR and delve into the new kinds of MAC-level interactions among network devices. Finally, we provide a simulation-driven analysis to showcase the potential of SR in various deployments, comprising different network densities and traffic loads. Our results show that the SR operation can significantly improve the medium utilization, especially in scenarios under high interference conditions. Moreover, our results demonstrate the non-intrusive design characteristic of SR, which allows enhancing the number of simultaneous transmissions with a low impact on the environment. We conclude the paper by giving some thoughts on the main challenges and limitations of the IEEE 802.11ax SR operation, including research gaps and future directions.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10230/47051
http://dx.doi.org/10.1016/j.comcom.2021.01.028
url http://hdl.handle.net/10230/47051
http://dx.doi.org/10.1016/j.comcom.2021.01.028
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Computer Communications. 2021 Mar 15;170:65-83
info:eu-repo/grantAgreement/ES/2PE/PGC2018-099959-B-100
info:eu-repo/grantAgreement/ES/2PE/RTI2018-095438-AI00
dc.rights.none.fl_str_mv © Elsevier http://dx.doi.org/10.1016/j.comcom.2021.01.028
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © Elsevier http://dx.doi.org/10.1016/j.comcom.2021.01.028
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositorio Digital de la UPF
instname:Universitat Pompeu Fabra
instname_str Universitat Pompeu Fabra
reponame_str Repositorio Digital de la UPF
collection Repositorio Digital de la UPF
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