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Open AccessArticle

Analysis of the Actual Power and EMF Exposure from Base Stations in a Commercial 5G Network

Ericsson Research, 164 83 Stockholm, Sweden
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Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(15), 5280; https://doi.org/10.3390/app10155280
Received: 10 July 2020 / Revised: 28 July 2020 / Accepted: 29 July 2020 / Published: 30 July 2020
(This article belongs to the Special Issue Human Exposure in 5G and 6G Scenarios)
In this work, monitoring of the transmit power for several base stations operating in a live 5G network (Telstra, Australia) was conducted with the purpose of analyzing the radio frequency (RF) electromagnetic field (EMF) exposure levels. The base stations made use of state-of-the-art massive MIMO antennas utilizing beamforming in order to optimize the signal strength at the user’s device. In order to characterize the actual EMF exposure from 5G base stations, knowledge of the amount of power dynamically allocated to each beam is therefore of importance. Experimental data on the spatial distribution of the base stations’ transmit power were gathered directly from the network by extracting information on the radio and baseband operations. Out of more than 13 million samples collected over 24 h, the maximum time-averaged power per beam direction was found to be well-below the theoretical maximum and lower than what was predicted by the existing statistical models. The results show that assuming constant peak power transmission in a fixed beam direction leads to an unrealistic EMF exposure assessment. This work provides insights relevant for the standardization of EMF compliance assessment methodologies applicable for 5G base stations. View Full-Text
Keywords: mobile communication; EMF exposure; 5G; base stations; RF EMF compliance; massive MIMO; antenna arrays; beamforming mobile communication; EMF exposure; 5G; base stations; RF EMF compliance; massive MIMO; antenna arrays; beamforming
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MDPI and ACS Style

Colombi, D.; Joshi, P.; Xu, B.; Ghasemifard, F.; Narasaraju, V.; Törnevik, C. Analysis of the Actual Power and EMF Exposure from Base Stations in a Commercial 5G Network. Appl. Sci. 2020, 10, 5280. https://doi.org/10.3390/app10155280

AMA Style

Colombi D, Joshi P, Xu B, Ghasemifard F, Narasaraju V, Törnevik C. Analysis of the Actual Power and EMF Exposure from Base Stations in a Commercial 5G Network. Applied Sciences. 2020; 10(15):5280. https://doi.org/10.3390/app10155280

Chicago/Turabian Style

Colombi, Davide; Joshi, Paramananda; Xu, Bo; Ghasemifard, Fatemeh; Narasaraju, Vignesh; Törnevik, Christer. 2020. "Analysis of the Actual Power and EMF Exposure from Base Stations in a Commercial 5G Network" Appl. Sci. 10, no. 15: 5280. https://doi.org/10.3390/app10155280

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