Relatórios técnicos
2211, 2021
| Título | Assessment and management of compliance with radio frequency electromagnetic field exposure limits for workers at radiocommunication sites and facilities |
| Resumo | Recommendation ITU-T K.145 includes guidance on the protection of workers against radio frequency electromagnetic fields (RF-EMFs) exposure in their working environments. Radio frequency (RF) workers range from installation engineers and tower climbers to R&D personnel and laboratory testing engineers. All of these RF workers are exposed to stronger RF-EMF fields than the general public. There are also RF informed workers who have been provided with information on RF-EMF safe working practices for a site as well as all other workers who are regarded as members of the public for the purposes of RF-EMF exposure limits. This Recommendation provides minimum general safety guidance for telecommunication RF workers around the world |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int /rec/T-REC-K.145 |
| Referência | T-REC-K.145 |
| Data | Dezembro 2020 |
2211, 2021
| Título | The impact of RF-EMF exposure limits stricter than the ICNIRP or IEEE guidelines on 4G and 5G mobile network deployment |
| Resumo | Radio frequency electromagnetic field (RF-EMF) exposure limits have become a critical concern for further deployment of wireless networks, especially in countries, regions and even specific cities where RF-EMF limits are significantly stricter than the International Commission for Non-Ionizing Radiation Protection (ICNIRP) or Institute of Electrical and Electronics Engineers (IEEE) guidelines. This problem currently affects several countries, such as China, India, Poland, Russia, Italy and Switzerland, regions of Belgium or cities such as Paris. Supplement 14 to the ITU-T K-series of Recommendations provides an overview of some of the challenges faced by countries, regions and cities that are about to deploy 4G or 5G infrastructures. It provides information on a simulation carried out in Poland of the impact of RF‑EMF limits as an example of a wider phenomenon, applicable to several other countries that have set limits stricter than those contained in the ICNIRP or IEEE guidelines. The results of the simulation indicate that, where RF-EMF limits are stricter than ICNIRP or IEEE guidelines, the network capacity buildout (both 4G and 5G) might be severely constrained and prevent growing data traffic demand and the launching of new services on existing mobile networks being addressed. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int /rec/T-REC-K.Sup14 |
| Referência | T-REC-K.Sup14 |
| Data | Setembro 2019 |
2211, 2021
| Título | Electromagnetic field (EMF) strength inside underground railway trains |
| Resumo | The electromagnetic field (EMF) environment surrounding underground railway trains is among those most frequently met by the general public in daily life. When an underground railway train passes through a tunnel, especially, passengers are exposed to the EMF radiated by several repeaters installed on the wall. EMF sources are close to passengers under these conditions. Supplement 19 to ITU-T K‑series Recommendations reports evaluations of EMF exposure levels in underground railway trains from mobile communication base stations installed in tunnels. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int /rec/T-REC-K.Sup19 |
| Referência | T-REC-K.Sup19 |
| Data | Setembro 2019 |
2211, 2021
| Título | 5G technology and human exposure to radiofrequency electromagnetic fields |
| Resumo | The deployment of fifth generation (5G) will see the evolution and expansion of existing fourth generation (4G) networks and the introduction of new radio access networks in millimetre wavebands. As a result of the use of much higher frequency ranges, the number of base stations will substantially increase. These networks will include a range of installations including smaller cell deployments and advanced antenna technologies. Massive multiple input multiple output (MIMO) antennas will allow the use of very narrow beams that will follow the user with an impact on the surrounding exposure level different from that of current systems. The number of wireless devices will dramatically increase. New technology allows for the use of more efficient systems that require lower communication signal levels. Supplement 9 to ITU-T K-series Recommendations contains an analysis of the impact of the implementation of 5G mobile systems with respect to the exposure level of electromagnetic fields (EMFs) around radiocommunication infrastructure. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int /rec/T-REC-K.Sup9 |
| Referência | T-REC-K.Sup9 |
| Data | Maio 2019 |
2211, 2021
| Título | Electromagnetic field considerations in smart sustainable cities |
| Resumo | The content of this Supplement 2 to Recommendation ITU-T K.91 was prepared by the Focus Group on Smart Sustainable Cities (FG‑SSC) and updated within Q3/5 sessions during SG5 meeting. Wireless networks provide vital infrastructure and connection of information and communication technology (ICT) elements that underpin smart sustainable cities. The effective design and careful deployment of wireless networks and short range devices (SRDs) are vital to ensuring electromagnetic field (EMF) compliance and maximum efficiency for ICTs. Key features of this Supplement are: a) It details the EMF considerations in smart sustainable cities. b) It provides guidance on implementation and promotes efficient deployment of wireless networks in smart sustainable cities. c) It features a ‘Smart sustainability city EMF check-list’ designed to provide an easy to use reference for city officials and planners to ensure smart city policies operate most efficiently and comply with EMF exposure standards. d) It references World Health Organization (WHO) materials, International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines, ITU-T Recommendations and IEC Standards. It is not intended to replicate the material in all references. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int /rec/T-REC-K.Sup4 |
| Referência | T-REC-K.Sup4 |
| Data | Setembro 2018 |