Mike Wood’s Post

Distinguished Professional - Technology Leader EME Standards, Governance & Risk Management at Telstra

2mo Edited

#Measuring #EMF exposure levels from #5G base stations is not as hard as it may seem. It just requires a careful approach to determine the purpose of the EMF assessment, and then choosing a method to match the purpose. Recently the #IEC TC106 team who specialise in developing global EMF test methods and standards, held a workshop as part of the 2024 #GSMA EMF Forum to demonstrate the various methods and instrumentation available for 5G base station testing. Grangeat Christophe convenor of the IEC working group presented the 5G EMF exposure assessment methods described in IEC 62232 and a range of case studies from 5G sites, to be released soon with IEC TR 62669 update. These important IEC documents ensure the latest test methods are available to suit all situations. So, onto the practical side of the EMF testing and the fun part where we got to see the latest test instruments and methods in action. To fully demonstrate the testing, a nearby operational 5G base station was activated into test mode triggering high traffic load conditions. There are basically 3 different test methods available to choose from. #Broadband measurements – this method measures EMF levels from all radio sources in the environment at the evaluation point. So, in our example with a 5G base station close by and running at maximum capacity, the measurement included the 5G signals and all of the other radio frequencies including Wi-Fi, 3G, 4G, TV and radio broadcast, and very low EMF. #FrequencySelective Measurements – this method is configured to measure individual radio frequency (RF) bands. They allow you to observe all the RF bands available at the measurement point, and then ‘select’ and measure the one of interest. (we measured the 5G frequencies) #CodeSelective Measurements – this method is configured to ‘decode’ the 5G signal in the network. Being able to ‘select’ and ‘decode’ the 5G signal, you can measure the ‘reference’ and ‘traffic’ resource blocs in the 5G signal, thus allowing you to derive the total EMF exposure level using extrapolation methods described in IEC 62232. All the test methods complement each other and have their advantages. A key learning was to identify the reason for doing an EMF test. For example, if the person requesting the test only wanted to know what the 5G EMF levels were, then a frequency selective or code selective measurement would be required. However, if the same person wanted to know what all the radio frequency EMF levels were, including 5G, then a broadband measurement would be sufficient, or a combination of methods. It was great to see the 5G EMF test methods and instruments live in action, low EMF levels, and we thank the #GSMA, #IEC #Viavi #WaveControl and #Narda for their support. Cheers Mike Jo Cops Jack Rowley Genis Sanchez Furkan Dayı Karim Tafer Laurent Derousseau Gilles Le Breton Stephan Sommersdorf Phill Knipe Teruo Onishi Manfred Ruttner Sami Gabriel Teruo Onishi

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Transcript

Hi, it's Michael here, chair of the GSM, a EMF group. We've just had a fantastic EMF forum for 2024 and it's been especially good because we've actually got to look at some live testing and a component of this has been working with the IC on looking at some of the test methods and the new case studies that are used globally. Christoph, you've led the MT3 or the IC team developing the the testing standards and the case studies. Briefly describe what you told us today or what you shared with us. OK, so what's the beginning of the session? I went through the presentation of ICC 2232 and its implementation guide ICR 62669, which includes a few case studies using this. And I think people were really interested in seeing it live, you know, in, in, in action. Now. I know there's some different, different manufacturers in Australia. You brought the different test equipment. Can you briefly describe what you were able to show with the equipment you've brought? Thanks, Marcus. Absolute pleasure to be here. BI Solutions has been presented one advisor behind the platform. This is a base station analyzer that among other things allows us to basically measure 5 PMS in frequency selective as well, but in good selective reference beams or of traffic beams, recognition of both. So very interesting discussions with the direction of this is taken to the future. So this is enabling us to look at the detail of the signal, pick out a certain elements that we want to focus on and then be able to extrapolate. Certain levels of EMF and cause traditionally we've looked at spectrum analysis where you're looking at the frequency selective range of measurements. Stefan, I think you've, you've brought a spectrum analyzer and we've looked at traditional methods. Yeah. What were you able to show us today with the equipment you brought short field proven SRAM with its integration over frequency. And we also hear how the exploration is done as well as our new device that can, as you can see here really measure. Or take into account also to time there with beamforming over time signal changes. So this makes the measurement much easier than in the past for extrapolation of the signals. And we just showed here in more or less real conditions under reconditions how that can be done. So we're in a real world environment here in a hotel in Brussels. It could be somebody's home. We could be looking at what is the total background level now. It was very interesting because. You had a broadband meter on the end from and you were able to look at everything no matter who was doing what, including the 5G and the base stations just up the street. So when we increase the power of the base station, you could see it instantly. So what was the advantage with what you were looking at in your in your instrument? Thanks. So we bring to the three which is a broadband measurements that take into account all the frequency from 100 kilohertz to 8 gigahertz and you have a direct reading of the. Around 90.7, but we saw outside that it was 22 to 3:00 depending on the load of the of the of the antenna. But yeah, so we saw actually the case application of the standards. That's really interesting. So one of the key things when we're looking at EMF assessments is trying to define what's the problem or the case you're trying to solve. And it could be that somebody's got a concern, it could be compliance on the tower. So there's a range of instruments to match the range of methods. And we're so far more advanced now than we were, say, five years ago when 5G was first introduced that I thought it was worth just introducing some of the players, looking at some of the results. But it's from the interest that we had in the room. And you can see loads of people walking around and observing this. It's been such a fantastic afternoon, Gentlemen. Thank you very much for coming along, bringing the test equipment. And it's going to be good to see where this goes into the future. We're heading towards 5G Advanced and 6G, but let's see where this heads to the future. Thank you so much for coming along. Thank you for having us.

Distinguished Professional - Technology Leader EME Standards, Governance & Risk Management at Telstra

2mo

A great GSMA EMF Forum 2024 - https://www.gsma.com/solutions-and-impact/connectivity-for-good/public-policy/key-learnings-from-five-years-of-5g-emf

Distinguished Professional - Technology Leader EME Standards, Governance & Risk Management at Telstra

2mo

Thank you to #Wavecontrol for demonstrating the broadband EMF testing. Being able to see the total EMF levels being very low on the one instrument including 5G, in addition to all of the other radio frequencies present including WiFi, 3G, 4G and Radio and TV broadcast was certainly very interesting.

Distinguished Professional - Technology Leader EME Standards, Governance & Risk Management at Telstra

2mo

Thank you to #Viavi and #Narda for demonstrating the 'Code Selective' and 'Frequency Selective' 5G EMF Testing instruments. It was very insightful to see the different test methods in action and low 5G EMF levels.

Distinguished Professional - Technology Leader EME Standards, Governance & Risk Management at Telstra

2mo

Thank you also to the GSMA - Public Policy team, Jack Rowley and Mikael Ricknäs for the great EMF forum and collaboration with the #iec on the 5G workshop

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Best practice on 5G base station RF-EMF exposure assessment methods.

Mike Wood

Distinguished Professional - Technology Leader EME Standards, Governance & Risk Management at Telstra
2mo Edited

#Measuring #EMF exposure levels from #5G base stations is not as hard as it may seem. It just requires a careful approach to determine the purpose of the EMF assessment, and then choosing a method to match the purpose. Recently the #IEC TC106 team who specialise in developing global EMF test methods and standards, held a workshop as part of the 2024 #GSMA EMF Forum to demonstrate the various methods and instrumentation available for 5G base station testing. Grangeat Christophe convenor of the IEC working group presented the 5G EMF exposure assessment methods described in IEC 62232 and a range of case studies from 5G sites, to be released soon with IEC TR 62669 update. These important IEC documents ensure the latest test methods are available to suit all situations. So, onto the practical side of the EMF testing and the fun part where we got to see the latest test instruments and methods in action. To fully demonstrate the testing, a nearby operational 5G base station was activated into test mode triggering high traffic load conditions. There are basically 3 different test methods available to choose from. #Broadband measurements – this method measures EMF levels from all radio sources in the environment at the evaluation point. So, in our example with a 5G base station close by and running at maximum capacity, the measurement included the 5G signals and all of the other radio frequencies including Wi-Fi, 3G, 4G, TV and radio broadcast, and very low EMF. #FrequencySelective Measurements – this method is configured to measure individual radio frequency (RF) bands. They allow you to observe all the RF bands available at the measurement point, and then ‘select’ and measure the one of interest. (we measured the 5G frequencies) #CodeSelective Measurements – this method is configured to ‘decode’ the 5G signal in the network. Being able to ‘select’ and ‘decode’ the 5G signal, you can measure the ‘reference’ and ‘traffic’ resource blocs in the 5G signal, thus allowing you to derive the total EMF exposure level using extrapolation methods described in IEC 62232. All the test methods complement each other and have their advantages. A key learning was to identify the reason for doing an EMF test. For example, if the person requesting the test only wanted to know what the 5G EMF levels were, then a frequency selective or code selective measurement would be required. However, if the same person wanted to know what all the radio frequency EMF levels were, including 5G, then a broadband measurement would be sufficient, or a combination of methods. It was great to see the 5G EMF test methods and instruments live in action, low EMF levels, and we thank the #GSMA, #IEC #Viavi #WaveControl and #Narda for their support. Cheers Mike Jo Cops Jack Rowley Genis Sanchez Furkan Dayı Karim Tafer Laurent Derousseau Gilles Le Breton Stephan Sommersdorf Phill Knipe Teruo Onishi Manfred Ruttner Sami Gabriel Teruo Onishi
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