A Survey of IEEE 802.11ax WLAN Temporal Duty Cycle for the Assessment of RF Electromagnetic

Applied Sciences · 2025 · No effect · Low evidence

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No effectLow evidencePaper 195

Study snapshot

PublicationApplied Sciences · 2025

Study typeexposure_assessment

Reported directionNo effect

Evidence ratingLow

Abstract

A Survey of IEEE 802.11ax WLAN Temporal Duty Cycle for the Assessment of RF Electromagnetic Exposure (Wi-Fi 6) Yang Y, Vermeeren G, Verloock L, Guxens M, Joseph W. A Survey of IEEE 802.11ax WLAN Temporal Duty Cycle for the Assessment of RF Electromagnetic Exposure. Applied Sciences. 2025; 15(5):2858. doi.org 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. Open access paper: mdpi.com

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeexposure_assessment

Effect directionno_effect

PopulationNot supplied

Sample sizeNot supplied

ExposureRF

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

In controlled laboratory conditions, duty cycle (DC) varied substantially by application, bandwidth, and radio conditions; FTP upload had the highest mean DC (94.3%) at 20 MHz, and YouTube 4K streaming showed bursts with a maximum DC of 89.2%. Under poor radio conditions, DC increased by up to 5× for certain applications. Incorporating DC reduced average electric-field strength by up to 10×; the maximum weighted exposure reported was 4.2 V/m (6.9% of ICNIRP limits) during multi-user scenarios.

Outcomes measured

Temporal duty cycle (DC) of IEEE 802.11ax (Wi‑Fi 6) transmissions
Weighted RF-EMF exposure / electric-field strength (V/m)
Comparison to ICNIRP reference levels/limits

Limitations

Controlled laboratory conditions (may not represent real-world deployments)
Frequency, distance, and detailed measurement setup not stated in the provided abstract
Sample size/number of devices and repetitions not stated

View raw extracted JSON

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "RF",
    "source": "wi-fi",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Temporal duty cycle (DC) of IEEE 802.11ax (Wi‑Fi 6) transmissions",
    "Weighted RF-EMF exposure / electric-field strength (V/m)",
    "Comparison to ICNIRP reference levels/limits"
  ],
  "main_findings": "In controlled laboratory conditions, duty cycle (DC) varied substantially by application, bandwidth, and radio conditions; FTP upload had the highest mean DC (94.3%) at 20 MHz, and YouTube 4K streaming showed bursts with a maximum DC of 89.2%. Under poor radio conditions, DC increased by up to 5× for certain applications. Incorporating DC reduced average electric-field strength by up to 10×; the maximum weighted exposure reported was 4.2 V/m (6.9% of ICNIRP limits) during multi-user scenarios.",
  "effect_direction": "no_effect",
  "limitations": [
    "Controlled laboratory conditions (may not represent real-world deployments)",
    "Frequency, distance, and detailed measurement setup not stated in the provided abstract",
    "Sample size/number of devices and repetitions not stated"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "IEEE 802.11ax",
    "Wi-Fi 6",
    "RF-EMF exposure",
    "duty cycle",
    "temporal duty cycle",
    "electric-field strength",
    "multi-user",
    "bandwidth",
    "SNR",
    "ICNIRP"
  ],
  "suggested_hubs": [
    {
      "slug": "school-wi-fi",
      "weight": 0.62,
      "reason": "Study assesses RF-EMF exposure from Wi‑Fi (802.11ax), relevant to Wi‑Fi exposure contexts."
    },
    {
      "slug": "who-icnirp",
      "weight": 0.55,
      "reason": "Results are expressed relative to ICNIRP limits (6.9% of ICNIRP limits)."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3390/app15052858
PubMed: Not supplied

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