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We believe that the Wi-Fi sharing service is an asset in expanding 5G UDN capacity requirements for higher coverage and ubiquitous wireless broadband connectivity. However, the limitations of the Wi-Fi sharing pioneer deployment, along with other related works, has led our team to carry out further research. As a result, it was found that FOg CloUd Slicing for Wi-Fi sharing (FOCUS) is a suitable means of expanding 5G UDN capacities. FOCUS applies end-to-end Network-Cloud slice definitions on top of the Wi-Fi sharing technology, with the aim of offering multitenancy and multiservice support for a wide range of services, while meeting carrier-grade requirements and resource control at runtime and making full use of a \u201csoftwarized\u201d approach. The feasibility of the FOCUS system is assessed in a real testbed deployment prototype, which allows an accurate view to be obtained of the basic functional principles and system-level proof-of-concept alongside the FON<jats:italic> de facto<\/jats:italic> Wi-Fi sharing service. The results suggest that FOCUS offers much greater benefits than FON, owing to its capacity to provide end-to-end Network-Cloud Slices while ensuring independent\/isolated service delivery with resource adaptation at runtime.<\/jats:p>","DOI":"10.1155\/2019\/8015274","type":"journal-article","created":{"date-parts":[[2019,2,3]],"date-time":"2019-02-03T18:35:53Z","timestamp":1549218953000},"page":"1-17","source":"Crossref","is-referenced-by-count":17,"title":["Network-Cloud Slicing Definitions for Wi-Fi Sharing Systems to Enhance 5G Ultra Dense Network Capabilities"],"prefix":"10.1155","volume":"2019","author":[{"given":"Maxweel","family":"Carmo","sequence":"first","affiliation":[{"name":"Federal University of Mato Grosso (UFMT), Barra do Gar\u00e7as\/MT, 78698-000, Brazil"},{"name":"Department of Informatics and Applied Mathematics (DIMAp), Federal University of Rio Grande do Norte (UFRN), Natal\/RN, 59078-970, 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