RF Safe

Statistical approach for human electromagnetic exposure assessment in future wireless ATTO-cell networks

2019 · No effect · Low evidence

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No effectLow evidencePaper 1738

Using a statistical approach based on a set of finite difference time domain simulations accounting for antenna phase variations, estimated psSAR10g averaged ~4.9 mW/kg, reached 7.6 mW/kg in 5% of cases, and had a maximum around 21.2 mW/kg in the studied nume…

Study snapshot

Publicationmanual · 2019
Study typeexposure_assessment
Reported directionNo effect
Evidence ratingLow

Abstract

Statistical approach for human electromagnetic exposure assessment in future wireless ATTO-cell networks Shikhantsov S, Thielens A, Vermeeren G, Demeester P, Martens L, Torfs G, Joseph W. Statistical approach for human electromagnetic exposure assessment in future wireless ATTO-cell networks. Radiat Prot Dosimetry. 2019 May 1;183(3):326-331. doi: 10.1093/rpd/ncy120. Abstract In this article, we study human electromagnetic exposure to the radiation of an ultra dense network of nodes integrated in a floor denoted as ATTO-cell floor, or ATTO-floor. ATTO-cells are a prospective 5G wireless networking technology, in which humans are exposed by several interfering sources. To numerically estimate this exposure we propose a statistical approach based on a set of finite difference time domain simulations. It accounts for variations of antenna phases and makes use of a large number of exposure evaluations, based on a relatively low number of required simulations. The exposure was expressed in peak-spatial 10-g SAR average (psSAR10g). The results show an average exposure level of ~4.9 mW/kg and reaching 7.6 mW/kg in 5% of cases. The maximum psSAR10g value found in the studied numerical setup equals around 21.2 mW/kg. Influence of the simulated ATTO-floor size on the resulting exposure was examined. All obtained exposure levels are far below 4 W/kg ICNIRP basic restriction for general public in limbs (and 20 W/kg basic restriction for occupational exposure), which makes ATTO-floor a potential low-exposure 5 G candidate. Open access paper: ncbi.nlm.nih.gov

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 · 0.0049 W/kg
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Using a statistical approach based on a set of finite difference time domain simulations accounting for antenna phase variations, estimated psSAR10g averaged ~4.9 mW/kg, reached 7.6 mW/kg in 5% of cases, and had a maximum around 21.2 mW/kg in the studied numerical setup. The authors report these exposure levels are far below ICNIRP basic restrictions (4 W/kg for general public in limbs; 20 W/kg for occupational exposure).

Outcomes measured

  • peak-spatial 10-g SAR average (psSAR10g)

Limitations

  • Numerical/simulation-based exposure estimation (finite difference time domain) rather than measurements in humans
  • Results pertain to the studied numerical setup; generalizability to other ATTO-floor configurations not stated
View raw extracted JSON
{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "RF",
    "source": "5G ATTO-cell (ultra-dense network integrated in floor)",
    "frequency_mhz": null,
    "sar_wkg": 0.0049,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "peak-spatial 10-g SAR average (psSAR10g)"
  ],
  "main_findings": "Using a statistical approach based on a set of finite difference time domain simulations accounting for antenna phase variations, estimated psSAR10g averaged ~4.9 mW/kg, reached 7.6 mW/kg in 5% of cases, and had a maximum around 21.2 mW/kg in the studied numerical setup. The authors report these exposure levels are far below ICNIRP basic restrictions (4 W/kg for general public in limbs; 20 W/kg for occupational exposure).",
  "effect_direction": "no_effect",
  "limitations": [
    "Numerical/simulation-based exposure estimation (finite difference time domain) rather than measurements in humans",
    "Results pertain to the studied numerical setup; generalizability to other ATTO-floor configurations not stated"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "ATTO-cell",
    "ATTO-floor",
    "5G",
    "ultra dense network",
    "exposure assessment",
    "FDTD",
    "SAR",
    "psSAR10g",
    "ICNIRP"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.6,
      "reason": "Abstract explicitly compares estimated SAR to ICNIRP basic restrictions."
    },
    {
      "slug": "5g-policy",
      "weight": 0.45,
      "reason": "Study concerns a prospective 5G wireless networking technology (ATTO-cells) and evaluates exposure relative to 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: 10.1093/rpd/ncy120
PubMed: Not supplied

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