IoT Device and IoT communication method to link with server through NAT

摘要

IoT devices and IoT communication methods are provided. The IoT device is connected to a server through NAT, executes a first session for service connection, and calculates a specific keep alive value corresponding to a period in which the IP address mapped by the NAT expires. By enabling the execution of the second session, it is possible to minimize the transmission of keepalive values of IoT devices, and share a specific keepalive value with other IoT devices, thereby reducing the network load caused by the keepalive values of IoT communication devices. Can be minimized.