“…Mobile data traffic has been significantly increasing every year, not only the amount of data per unit time such as movie contents, but also the number of terminals has been increasing significantly [ 1 ]. The reason for this is that the concept of communication between devices such as internet of things (IoT) [ 2 , 3 , 4 , 5 ] and machine type communication (MTC) [ 6 , 7 , 8 ] has become widespread. In a sensor network that collects environmental information, wireless nodes are deployed in a wide area and in large quantities.…”