Development of an Ad-hoc Smart Room Based on User-oriented Context-aware System Architecture

Context is defined as information that represents the environment surrounding us. A system to provide services to users using context is called a context-aware system (CAS), and it has been widely studied. However, many conventional CASs are not flexible. As conventional CASs cannot be freely customized by end-users, they lack adaptability to environments, making them difficult to use in various environments. To solve this problem, we propose a user-oriented context-aware system architecture (U-CASA) for building ad-hoc smart rooms. This architecture allows end-users to install various IoT sensor devices to the target environment and to make it a smart room. The end-user can also freely customize the system settings and can link various contexts to a variety of services. In order to evaluate the proposed architecture, we built two ad-hoc smart rooms based on U-CASA. As a result of the demonstration experiment with behavior scenarios, we confirmed that two smart rooms can perform properly and can provide services despite their different environments.