Fuente: Wipo "IOT" Provided are an IoT service method for compositely performing a server-centric global IoT service and a gateway-centric local IoT service at the same time, and an IoT system using the same. Accordingly, an IoT service can be performed in an IoT gateway without going through an IoT server because an IoT device is not directly connected to the IoT server and data is collected in the IoT gateway using the IoT gateway together with the server. COPYRIGHT KIPO 2018