| Abstract |
In smart cities, the most important factor in connecting and controlling various devices and services is interworking the data and managing systematic integration. The smart city includes the Internet of things (IoT) devices in various domains, such as smart metering, smart grids, health care, logistics, and transport. However, interoperability among devices in different domains is difficult due to the lack of common standards. In particular, interoperability in IoT environments is divided into several types (e.g., semantic, syntactic, network, and middleware), and each has different requirements. Therefore, interoperability issues should be identified on different levels, and the requirements should be proposed differently for each type. In this paper, we applied the interoperability types in the IoT environment to the smart city. In addition, we derived the requirements for five types of interoperability in a smart city based on various interoperability studies in the IoT environment. Consequently, we presented the five interoperability types (i.e., syntactic, semantic, network, middleware, and security) by adding common security for each type and presented the requirements that satisfy various interoperability issues in the smart city. |