Demonstration of Safe Electromagnetic Radiation Emitted by 5G Active Antenna Systems

Abstract

Demonstration of Safe Electromagnetic Radiation Emitted by 5G Active Antenna Systems Kumar S, Sheemar CK, Astro A, Querol J, Chatzinotas S. Demonstration of Safe Electromagnetic Radiation Emitted by 5G Active Antenna Systems. arXiv:2406.07910v1 [cs.ET] 12 Jun 2024. Abstract The careful planning and safe deployment of 5G technologies will bring enormous benefits to society and economy. Higher frequency, beamforming and small-cells are key technologies that will provide unmatched throughput and seamless connectivity to the 5G users. Superficial knowledge of these technologies has raised concerns among the general public about the harmful effects of radiation. Several standardization bodies are active to put limits on the emissions which are based on a defined set of radiation measurement methodologies. However, due to the peculiarity of 5G such as dynamicity of the beams, network densification, Time Division Duplexing mode of operation, etc, using existing EMF measurement methods may provide inaccurate results. In this context, we discuss our experimental studies aimed towards the measurement of radiation caused by beam-based transmissions from 5G base-station equipped with an Active Antenna System (AAS). We elaborate on the shortcomings of current measurement methodologies and address several open questions. Next, we demonstrate that using user-specific downlink beamforming, not only better performance is achieved compared to non- beamformed downlink, but also the radiation in the vicinity of the intended user is significantly decreased. Further, we show that under weak reception conditions, an uplink transmission can cause significantly high radiation in the vicinity of the user-equipment. We believe that our work will help in clearing several misleading concepts about the 5G EMF radiation effects. We conclude the work by providing guidelines to improve the methodology of EMF measurement by considering the spatio- temporal dynamicity of the 5G transmission. Open access paper: arxiv.org

AI evidence extraction

Main findings

The authors report experimental studies on measuring radiation from beam-based transmissions from a 5G base station with an Active Antenna System and discuss shortcomings of current EMF measurement methodologies for 5G. They report that user-specific downlink beamforming decreased radiation in the vicinity of the intended user compared to non-beamformed downlink, while under weak reception conditions uplink transmission could cause significantly high radiation in the vicinity of the user equipment. The paper provides guidelines to improve EMF measurement methodology accounting for spatio-temporal dynamicity of 5G transmission.

Outcomes measured

• EMF/radiation measurement methodology for 5G beam-based transmissions
• Radiation levels in vicinity of intended user under downlink beamforming vs non-beamformed downlink
• Radiation levels in vicinity of user equipment during uplink under weak reception conditions

Limitations

• Preprint on arXiv; peer-review status not stated
• No specific frequencies, exposure metrics (e.g., field strength, SAR), or quantitative results provided in the abstract
• No population/sample size or detailed experimental setup described in the abstract

Suggested hubs

• 5g-policy (0.62)
  Focuses on 5G emissions, public concerns, and measurement guidelines relevant to deployment and safety discussions.
• who-icnirp (0.46)
  Discusses standardization bodies and emission limits/measurement methodologies (not named), which aligns with guideline/limits context.

{
    "study_type": "engineering",
    "exposure": {
        "band": "RF",
        "source": "base station",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": null,
    "sample_size": null,
    "outcomes": [
        "EMF/radiation measurement methodology for 5G beam-based transmissions",
        "Radiation levels in vicinity of intended user under downlink beamforming vs non-beamformed downlink",
        "Radiation levels in vicinity of user equipment during uplink under weak reception conditions"
    ],
    "main_findings": "The authors report experimental studies on measuring radiation from beam-based transmissions from a 5G base station with an Active Antenna System and discuss shortcomings of current EMF measurement methodologies for 5G. They report that user-specific downlink beamforming decreased radiation in the vicinity of the intended user compared to non-beamformed downlink, while under weak reception conditions uplink transmission could cause significantly high radiation in the vicinity of the user equipment. The paper provides guidelines to improve EMF measurement methodology accounting for spatio-temporal dynamicity of 5G transmission.",
    "effect_direction": "mixed",
    "limitations": [
        "Preprint on arXiv; peer-review status not stated",
        "No specific frequencies, exposure metrics (e.g., field strength, SAR), or quantitative results provided in the abstract",
        "No population/sample size or detailed experimental setup described in the abstract"
    ],
    "evidence_strength": "insufficient",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "no",
    "keywords": [
        "5G",
        "active antenna system",
        "AAS",
        "beamforming",
        "small cells",
        "EMF measurement",
        "radiation measurement methodology",
        "downlink",
        "uplink",
        "TDD",
        "network densification",
        "spatio-temporal dynamicity"
    ],
    "suggested_hubs": [
        {
            "slug": "5g-policy",
            "weight": 0.61999999999999999555910790149937383830547332763671875,
            "reason": "Focuses on 5G emissions, public concerns, and measurement guidelines relevant to deployment and safety discussions."
        },
        {
            "slug": "who-icnirp",
            "weight": 0.460000000000000019984014443252817727625370025634765625,
            "reason": "Discusses standardization bodies and emission limits/measurement methodologies (not named), which aligns with guideline/limits context."
        }
    ]
}

Comments

Log in to comment.

No comments yet.