A Survey of IEEE 802.11ax WLAN Temporal Duty Cycle for the Assessment of RF Electromagnetic Exposure
Source abstract
Abstract
The increasing deployment of IEEE 802.11ax (Wi-Fi 6) networks necessitates an accurate assessment of radiofrequency electromagnetic field (RF-EMF) exposure under realistic usage scenarios. This study investigates the duty cycle (DC) and corresponding exposure levels of Wi-Fi 6 in controlled laboratory conditions, focusing on bandwidth variations, multi-user scenarios, and application types. DC measurements reveal significant variability across internet services, with FTP upload exhibiting the highest mean DC (94.3%) under 20 MHz bandwidth, while YouTube 4K video streaming showed bursts with a maximum DC of 89.2%. Under poor radio conditions, DC increased by up to 5× for certain applications, emphasizing the influence of degraded signal-to-noise ratio (SNR) on retransmissions and modulation. Weighted exposure results indicate a reduction in average electric-field strength by up to 10× when incorporating DC, with maximum weighted exposure at 4.2 V/m (6.9% of ICNIRP limits) during multi-user scenarios. These findings highlight the critical role of realistic DC assessments in refining exposure evaluations, ensuring regulatory compliance, and advancing the understanding of Wi-Fi 6’s EMF exposure implications.
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Research context
OpenAlex topics: Power Line Communications and Noise · Electromagnetic Fields and Biological Effects · Full-Duplex Wireless Communications
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Affiliations
Department of Information Technology, Ghent University/imec, 9052 Ghent, Belgium
Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
Barcelona Institute for Global Health (ISGlobal), 08036 Barcelona, Spain
Department of Medicine and Life Sciences, Universitat Pompeu Fabra, 08002 Barcelona, Spain
Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Centre, 3015 GD Rotterdam, The Netherlands
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, 28029 Madrid, Spain
Funding
“EXPO-ENFANTS—Caractérisation des usages et de l’exposition réelle ponctuelle et cumulée aux radiofréquences de dispositifs mobile communicants y compris nouvelles technologies chez les enfants à différents âges” · MCIN/AEI/10.13039/501100011033 · Generalitat de Catalunya · China Scholarship Council
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Show source-provided references
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