RF Safe

Research on Electromagnetic Radiation Safety Assessment of Co-construction and Sharing 5G Network

2022 · No effect · Low evidence

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No effectLow evidencePaper 594

The paper reports in-situ, real-time monitoring of field radiation levels from a Sub-6G 5G base station co-constructed/shared by China Telecom and China Unicom. Under an extreme eMBB downlink scenario (6 minutes), measured radiation levels for a shared base s…

Study snapshot

Publicationmanual · 2022
Study typeexposure_assessment
Reported directionNo effect
Evidence ratingLow

Abstract

Research on Electromagnetic Radiation Safety Assessment of Co-construction and Sharing 5G Network Senwen L, Zhizhong W, Huagang W, Shaochuan C. Research on Electromagnetic Radiation Safety Assessment of Co-construction and Sharing 5G Network. 2022 6th International Conference on Communication and Information Systems (ICCIS), 2022, pp. 27-34, doi: 10.1109/ICCIS56375.2022.9998130. Abstract Electromagnetic radiation safety of 5G base stations has been widely concerned by society and the public due to the accelerated development. This paper analyzes the electromagnetic radiation propagation characteristics of 5G mMIMO beam-forming, and monitors the field radiation level of the low-frequency 5G(Sub 6G) base station which co-constructed and shared by China Telecom and China Unicom in-situ real time, also studies and assesses the electromagnetic radiation safety of 5G co-construction and sharing network according to the international and China’s 5G electromagnetic radiation limit standards. Excerpts ... Currently, the rated transmission power of commercial 5G macro station has specifications such as 160W, 200W, 240W and 320W, which is far more than the 40W to 60W transmission power of 4G macro stations. At the same time, as 5G adopts a higher working frequency band and is affected by high-frequency attenuation, the coverage radius of 5G macro stations is about 300m to1500m, which is much smaller than the coverage radius of 4G macro stations of 1000m to 3500m, obviously, in order to ensure the same coverage quality, the number of 5G base stations is usually 3 to 5 times more than that of 4G.... As can be seen from Table I, for the 5G networks of these four operators in China, the maximum electromagnetic radiation limit (power density) of 5G(Sub 6G) base stations specified by China's national standard GB8702-2014 is between 40 μW/cm2 to 67 μW/cm2, and the maximum limit (power density) specified by HJ/T10.3-1996 in China's environmental protection industry is 8 μW/cm2 to 13.4 μW/cm2, but the maximum limit of electromagnetic radiation (power density) of 5G base stations specified by international standards ICNIRP2020 and IEEE C95.1-2019 can reach 1000 μW/cm2, obviously, the China's national standard of 5G base station radiation limit is 15 to 25 times harsher than that of other countries that mostly adopt international standard limits. If China's environmental protection industry standard HJ/10.3 is used, it is 75 to 125 times stricter than that of other countries that adopt international standards. Conclusions Although the beam-forming characteristic of the 5G mMIMO base station has strong beam directivity, and the electromagnetic radiation intensity of 5G base station also has a strong relationship with the user's download rate, however, in the most extreme application scenario of eMBB high-speed downlink lasting 6min without interruption, through frequency selection monitoring, the electromagnetic radiation level of 5G shared base stations with the maximum power of 320W and 200M working bandwidth in China's commercial network is far lower than China's national limit standard and international standard, which also shows that the high power, high frequency and high speed 5G network does not necessarily mean the safety problem of electromagnetic radiation. In fact, the electromagnetic environment quality of the sensitive area around the base station can still meet the national standard. In addition, considering that China's national standard limit requirements are 15-25 times stricter than international standards, most countries have adopted more relaxed limit requirements for public exposure to 5G electromagnetic radiation, therefore, combined with the in-situ monitoring results obtained under the extreme eMBB application scenarios, which are far lower than the requirements of the national limit standard GB8702- 2014, as long as the operators can timely do the pre-assessment of radiation risk before the base station construction and routine monitoring during operation, the electromagnetic radiation risk in sensitive areas covered by 5G ieeexplore-ieee-org

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 · Extreme eMBB high-speed downlink lasting 6 min without interruption (monitoring scenario)
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

The paper reports in-situ, real-time monitoring of field radiation levels from a Sub-6G 5G base station co-constructed/shared by China Telecom and China Unicom. Under an extreme eMBB downlink scenario (6 minutes), measured radiation levels for a shared base station (maximum power 320 W, 200 MHz bandwidth) were reported as far below China’s national limit standard and international standards, and the electromagnetic environment in sensitive areas around the base station could still meet the national standard.

Outcomes measured

  • In-situ real-time field radiation level (power density) around a low-frequency 5G (Sub-6G) co-constructed/shared base station
  • Comparison to exposure limit standards (China GB8702-2014; HJ/T10.3-1996; ICNIRP 2020; IEEE C95.1-2019)

Limitations

  • No numerical measurement results are provided in the abstract/excerpts (only qualitative statements such as 'far lower').
  • Frequency (MHz/GHz) of the monitored Sub-6G base station is not specified in the provided text.
  • No details on measurement protocol (locations, distances, instrumentation, averaging time, number of measurements) are provided in the provided text.
  • No health outcomes are assessed; this is an exposure/standards-comparison assessment.
View raw extracted JSON
{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "RF",
    "source": "base station",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "Extreme eMBB high-speed downlink lasting 6 min without interruption (monitoring scenario)"
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "In-situ real-time field radiation level (power density) around a low-frequency 5G (Sub-6G) co-constructed/shared base station",
    "Comparison to exposure limit standards (China GB8702-2014; HJ/T10.3-1996; ICNIRP 2020; IEEE C95.1-2019)"
  ],
  "main_findings": "The paper reports in-situ, real-time monitoring of field radiation levels from a Sub-6G 5G base station co-constructed/shared by China Telecom and China Unicom. Under an extreme eMBB downlink scenario (6 minutes), measured radiation levels for a shared base station (maximum power 320 W, 200 MHz bandwidth) were reported as far below China’s national limit standard and international standards, and the electromagnetic environment in sensitive areas around the base station could still meet the national standard.",
  "effect_direction": "no_effect",
  "limitations": [
    "No numerical measurement results are provided in the abstract/excerpts (only qualitative statements such as 'far lower').",
    "Frequency (MHz/GHz) of the monitored Sub-6G base station is not specified in the provided text.",
    "No details on measurement protocol (locations, distances, instrumentation, averaging time, number of measurements) are provided in the provided text.",
    "No health outcomes are assessed; this is an exposure/standards-comparison assessment."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "5G",
    "Sub-6G",
    "base station",
    "mMIMO",
    "beamforming",
    "electromagnetic radiation",
    "power density",
    "in-situ monitoring",
    "exposure limits",
    "GB8702-2014",
    "ICNIRP 2020",
    "IEEE C95.1-2019",
    "China Telecom",
    "China Unicom"
  ],
  "suggested_hubs": [
    {
      "slug": "5g-policy",
      "weight": 0.86,
      "reason": "Focuses on 5G base-station exposure assessment and comparison of China vs international public exposure limits."
    },
    {
      "slug": "who-icnirp",
      "weight": 0.72,
      "reason": "Explicitly discusses ICNIRP 2020 limits and compares them with national standards."
    }
  ]
}
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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: 10.1109/iccis56375.2022.9998130
PubMed: Not supplied

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