Document Overview
This is a perspective article published by MDPI in the journal Sensors (DOI 10.3390/s22041369) in February 2022. The paper's authors are listed across several institutions, including IAE Paris–Sorbonne Business School, Deakin University, and the Norwegian University of Science and Technology. Its subject is how the ‘15-minute city’ concept can be combined with Digital Twins, the Internet of Things (IoT) and 6G wireless connectivity.
Background of the 15-Minute City
The paper credits Franco-Colombian scientist Carlos Moreno with conceiving the 15-minute city in 2016, drawing on Jane Jacobs. It describes the model as one where residents can walk or cycle to essential amenities within 15 minutes. The text cites Paris, under Mayor Anne Hidalgo, as a city implementing the concept, with a target of reducing private cars by 50%, and Bellevue through its Environmental Stewardship Plan 2021–2025.
Core Characteristics and Smart City Links
The paper states that Moreno, Allam, Chabaud, Gall and Pratlong identify four key characteristics of the concept: proximity, diversity, ubiquitousness and density. It links these to compact and eco-city design strategies and to the smart city concept, describing ICT infrastructure as the enabler of a data-driven form of urbanism.
The Four-Layer IoT Architecture
The authors propose a four-layer IoT architecture for the 15-minute city: physical/perception, network/transmission, middleware/technology, and application/service. The paper describes sensors, wireless networks such as Wi-Fi, Bluetooth and 4G/5G/6G, middleware for data integration, and urban analytics as the components of this structure.
Digital Twins, IoT and 6G in Practice
On Digital Twins, the paper argues they can simulate scenarios and let residents visualise and interact with planned outcomes. It notes higher initial costs and that the technology is in its infancy. On IoT, it cites evidence that cities deploying technology can improve quality of life by 10% to 30%, and it names privacy, data quality and cost as limitations. On 6G, it cites a projection of over 25.4 billion IoT devices by 2030, up from 8.74 billion globally, and argues 6G will be needed beyond 5G.
Key Findings and Conclusions
The authors conclude that the 15-minute city is emerging as a by-product or evolution of the smart city narrative. They state that its success depends on aligning it with existing and emerging smart technologies, and that a follow-up study will be necessary to evaluate how the concept develops.
Why It Matters for Urban Policy
The paper says it is intended to present new opportunities for cities and to argue that these connectivities should be explored now so that protocols can be devised and urban agendas recalibrated. It frames its audience as urban planners and city managers seeking to align the 15-minute city with UN Sustainable Development Goal 11 and the New Urban Agenda.