The purpose of this paper is to perform large-scale environmental sensing with a lot of IoT devices, as typically seen in Smart City, efficiently and for multiple applications. In this paper, we propose a novel sensing method, called mission oriented sensing, which accepts multiple and dynamic sensing purposes on a single infrastructure. Design/methodology/approach The proposed method achieves the purpose by dealing sensing configuration (application's purpose) as mission. It realizes sharing single infrastructure by accepting multiple missions in parallel, and it accepts missions' update anytime. In addition, the sensing platform based on military analogy can command and control a lot of IoT devices in good order, and this realizes mission oriented sensing above. Findings Introducing mission oriented sensing, multiple purpose large-scale sensing can be conducted efficiently. The experimental evaluation with a prototype platform shows the practical feasibility. In addition, the result shows that it is effective to update sensing configuration dynamically. Research limitations/implications The proposed method focuses aggregating environmental sensor value from a lot of devices, and thus it can treat stream data such as video or audio or control a specific device directly. Originality/value In proposed method, a single sensing infrastructure can be used by multiple applications, and it admits heterogeneous devices in a single infrastructure. In addition, the proposed method has less technical restriction and developers can implement actual platform with technologies for context.

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Home Network System (HNS) is a system which provides value-added services by orchestrating household appliances and sensors. In previous work, we have proposed Cloud HNS, which is a new type of HNS based on the concept of Cloud. In this research, we propose IRaaS (Infrared as a Service) that realizes networking control of household appliances controlled by infrared signal, as a Cloud HNS's appliance control service. IRaaS consists of two components, IR Proxy and jRemocon. IR Proxy mediates appliance control on Cloud, and jRemocon transmits an infrared signal in a home. With these components, IRaaS can provide appliance control functions as a service on Cloud. Then, we design and consider elements required for implementing IRaaS, and we also create and test a prototype. Based on these results, we confirm the sufficiency of functions of IRaaS.