| CPC H04W 56/001 (2013.01) | 20 Claims | 

| 
               1. A node apparatus configured to be connected with a sensor comprising: 
            a communication portion configured to communicate with a gateway apparatus; and 
                a control portion, 
                wherein the control portion is configured to execute 
                a first task in which the control portion transmits data obtained from the sensor, to the gateway apparatus by using the communication portion, and 
                a second task in which the control portion transmits information on synchronization with the gateway apparatus, to the gateway apparatus by using the communication portion at a timing different from a timing at which the control portion executes the first task. 
               |