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per the UNs ITU
https://www.itu.int/en/mediacentre/backgrounders/Pages/5G-fifth-generation-of-mobile-technologies.aspx
โConsumer demands are shaping the development of mobile broadband services. Anticipated increases in traffic, estimated between 10 and 100 times in the period 2020 - 2030, and growth of number of devices and services, as well as demand for enhanced affordability and user experience will require innovative solutions. The number of connected devices on the Internet is projected to reach 50 billion any time from 2025 onwards.
The fifth generation of mobile technologies - 5G - is expected to connect people, things, data, applications, transport systems and cities in smart networked communication environments. It should transport a huge amount of data much faster, reliably connect an extremely large number of devices and process very high volumes of data with minimal delay.
5G technologies are expected to support applications such as smart homes and buildings, smart cities, 3D video, work and play in the cloud, remote medical services, virtual and augmented reality, and massive machine-to-machine communications for industry automation. 3G and 4G networks currently face challenges in supporting these services.
Although the business cases and scope of use present challenges, these new functionalities and new services necessitate a new way of deploying advanced mobile services, as well as new approaches in making 5G technologies work together in industrial settings by machine-to-machine communications, Internet of Things (IoT) or with connected vehicles.
IMT-2020, the name used in ITU for the standards of 5G, is expected to continue to be developed from 2020 onwards, with 5G trials and pre-commercial activities already underway to assist in evaluating the candidate technologies and frequency bands that may be used for this purpose. The first full-scale commercial deployments for 5G are expected sometime after IMT-2020 specifications are finalized.
โITU plays a leading role in managing the radio spectrum and developing globally applicable standards for IMT-2020. ITU is working towards providing stable international regulations, sufficient spectrum and suitable standards for IMT-2020 and the core network to enable successful 5G deployments at the regional and international levels. At the ITU World Radiocommunication Conference 2019 (WRC-19 ), global stakeholders built consensus to identify additional spectrum for IMT-2020.
โ5G intends to accelerate the achievement of all 17 Sustainable Development Goals (SDGs), from affordable and clean energy to zero hunger.โ
https://en.wikipedia.org/wiki/Houlin_Zhao