Advances in technology are not only changing the world around us but also driving the wireless industry to develop the next generation of network technology. There is a lot of buzz building over the advent of 5G that will facilitate the entire planet through continuous and ubiquitous communication connecting anybody to anything, anywhere, anytime, and anyhow regardless of the device, service, network, or geographical existence. 5G will also prove to be a paradigm shift including high carrier frequencies with massive bandwidths, having a large number of antennas, and with an extreme base station and device densities. In this paper, we investigate the potential beneficiaries of 5G and identify the use-cases, where 5G can make an impact. In particular, we consider three main use-cases: vehicle-to-everything (V2X) communication, drones, and healthcare. We explore and highlight the problems and deficiencies of current cellular technologies with respect to these use-cases and identify how 5G will overcome those deficiencies. We also identified the open research problems and provide possible future directions to cope with those issues. 5G, V2X communication, drones, healthcare, ultra-low-latency, ultra-high-reliability. INDEX TERMS

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The 5G-VINNI testbed infrastructure project provides 5G facilities for pan-European services. Within the project, the UK site is one of the 5G-VINNI facilities that targets developing a flexible and dynamic test environment which can be adapted to meet requirements from H2020 funded projects as well as external trials, to enable vertical industries to assess 5G networks in the context of advanced digital use cases. In this paper, we present a full overview of the 5G test infrastructure developed at the UK 5G-VINNI facility, including backhaul, edge, slicing, interworking and validation. This work presents an operator's experience in setting up a testbed facility and in engaging with different verticals conducting their research projects using the 5G facility, and the results and benefits to the industry. Furthermore, the lessons learned from the design, installation, operation and experimentation phases of the project are discussed.

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