Convergence of Various Smart City Platforms into a Unified Citywide Platform

In order to enhance the quality of life to its citizens, cities invest in digital infrastructures to allow for sustainable environments and smart applications. However, there are significant concerns about the benefits of smart city solutions as compared to the initial investment needed for their implementation. Current proposed solutions involve discarding proprietary platforms and connecting legacy sensors onto open standards-based platform via gateways. Therefore, our approach involves designing a gateway to integrate sensor data onto an ETSI oneM2M compliant smart city solution. Our validation shows that gateways can be designed to integrate different smart city platforms using different access technologies without affecting the independent functionalities of the platforms. The main contribution of this paper is a model that enables sharing of sensor infrastructure between a smart city platform belonging to a private organisation and a citywide platform which may belong to the Municipal.