Functional view of a smart city architecture: the SCDA greenfield approach

Smart cities are typical examples of distributed cyber-physical systems because they closely integrate multiple technical and social domains providing novel solutions to improve the cities' ecological footprint. Smart city architectures couple these domains and thus have to cover manifold control loops of different characteristic time constants. The wide granularity spectrum and multiple domains make modeling and simulation of smart cities a challenging task. In this paper, we present a greenfield architecture considering buildings, electric power grid, and communication infrastructure. This idealized blueprint architecture is created based on the real field situation in the smart city project of Aspern - Vienna's Urban Lakeside. We present the specific goals of the flagship research project "Smart Cities Demo Aspern" and how they are fulfilled by the presented greenfield architecture. The greenfield architecture is developed to provide an additional reference besides related Smart City Projects, against which the real-world implementation can be assessed. It also helps to understand the wide granularity spectrum that a technical smart city system has to cover, and thus allows to draw conclusions for the modeling of such cyberphysical systems of systems.