Internet of things gateway and operating method of the same

An Internet of things (IoT) gateway comprising:

• a wide area network (WAN) port monitoring portion configured to monitor whether a cable for wired connection with a router has been inserted into a WAN port;
• an operating mode determiner configured to determine an operating mode when the cable has not been inserted into the WAN port;
• a smart device access portion configured to, when a first mode for operating as a server is determined as the operating mode, be activated and connected to a smart device of a user and acquire access information for a target router from the smart device;
• a router access portion configured to, when the access information for the target router is acquired, be activated and wirelessly access the target router using the access information for the target router;
• and
• a service provider configured to, when the router access portion accesses the target router, transfer status messages acquired from one or more IoT devices to the target router, or receive control commands for the one or more IoT devices from the target router and transfer the control commands to the corresponding IoT devices, and
• wherein the operating mode determiner determines the first mode as the operating mode and activates the smart device access portion when the access information for the router that the IoT gateway has last accessed is not recorded in the memory, and deactivates the smart device access portion and activates the router access portion when the access information for the target router is acquired, and
• the operating mode determiner determines a second mode as the operating mode and activates the router access portion when the access information for the router that the IoT gateway has last accessed is recorded in the memory.