Supplement 32 to ITU-T K-series Recommendations (06/2024) Case studies of radio frequency-electromagnetic field (RF-EMF) assessment Summary History FOREWORD Table of Contents Introduction 1 Scope 2 References 3 Definitions 3.1 Terms defined elsewhere 3.2 Terms defined in this Supplement 4 Abbreviations and acronyms 5 Conventions 6 Overview of case studies 7 Case study of RF-EMF compliance assessment of a 5G mMIMO macro BS site 7.1 RF exposure compliance evaluation process 7.2 RF exposure compliance evaluation 8 Case study of RF-EMF compliance assessment of a 5G small cell site 8.1 Small cell configuration 8.2 Compliance evaluation process 8.3 RF exposure compliance evaluation 9 5G mMIMO macro BSs of the three operators 9.1 General description 9.2 Measurement implementation 9.2.1 Evaluation process 9.2.2 Methodology 9.2.3 Measurement layout 9.2.4 Reporting 9.3 Measurement results 9.3.1 Case studies for high-speed application scenarios 9.3.1.1 High-speed case for China Telecom's 5G mMIMO BS 9.3.1.2 High-speed case for China Unicom's 5G mMIMO BS 9.3.1.3 High-speed case for the shared 5G mMIMO BS by China Telecom and China Unicom 9.3.1.4 High-speed case for China Mobile's 5G BS 9.3.2 Case studies for medium-speed application scenarios 9.3.2.1 Medium-speed case for China Telecom's 5G mMIMO BS 9.3.2.2 Medium-speed case for China Unicom's 5G mMIMO BS 9.3.2.3 Medium-speed case for China Mobile's 5G mMIMO BS 9.3.3 Case studies for low-speed application scenarios (common and daily application scenarios) 9.3.3.1 Low-speed case for China Telecom's 5G mMIMO BS 9.3.3.2 Low-speed case for China Unicom's 5G mMIMO BS 9.3.3.3 Low-speed case for China Mobile's 5G mMIMO BS 9.3.4 Case analysis 9.4 Conclusion 10 National survey in Uganda 10.1 Measurements of the RF EMF exposure levels 10.2 Face to face interviews 10.3 Implementation of recommendations from the national survey 11 The 5G mmWave RF-EMF exposure level test based OTA 11.1 Methodology 11.2 5G mmWave EMF test environment 11.3 Measured 5G mmWave AAU base station parameters 11.4 Testing power configuration of the measured 5G mmWave AAU3 11.5 Test points setup and distribution 11.6 Test procedure 11.7 mmWave beam RF-EMF exposure level measurement results 11.8 Analysis of measurement results 11.9 Conclusion 12 Case study of 5G-NR BS EMF measurement by applying the zero-span and code select method 12.1 Background 12.2 RF-EMF measurement method of 5G-NR BS 12.3 Measurement method of SSB level 12.4 RF-EMF measurement results for 5G-NR BS in Korea 12.5 Comparative analysis of RF-EMF according to SSB measurement method 12.6 Summary 13 Case study on in-situ RF-EMF exposure assessment of a 5G mMIMO macro BS using the broadband method 13.1 Introduction 13.2 Testing approach 13.3 Location and EUT 13.4 Methodology 13.5 Equipment used 13.6 Measurement duration 13.7 Measurement layout 13.8 Technical outcome 13.9 Non-specific BS load profile measurements 13.10 Typical BS load profile measurements 13.11 High BS load profile measurements 13.12 Uncertainty budget 13.13 Conclusions Appendix I Technical information supporting the case study on a 5G macro BS site with massive MIMO in-situ RF exposure assessment I.1 Description of the in-situ RF exposure measurement method for 5G mMIMO BS I.1.1 Environmental conditions for measurement I.1.2 General requirements for measurement instrument I.1.3 Specifications of the measurement instrument I.1.4 Information collection I.1.5 Measurement factor I.1.6 Measurement point selection I.1.7 Measurement height I.1.8 Measurement of working conditions and 5G user equipment I.1.9 Measurement readings I.1.10 Information record I.1.11 Measurement quality assurance Ⅰ.2 Application scenarios selection I.2.1 High-speed downlink scenarios I.2.2 Medium-speed downlink scenarios I.2.3 Low-speed downlink scenarios (common and daily application scenarios) I.3 Comparison of the RF exposure limits of 5G wireless networks I.4 Basic information record form I.5 Measurement result record form I.6 5G base stations installation reference I.6.1 Single pole stations I.6.2 House roof station Bibliography