Transmission period determination method, transmission period determining system and program

The setting of the transmission cycle of the periodic intermittent transmission (IPT transmission period), proposes a feasible transmission period determination method or the like by a general-purpose radio module with existing drivers. Wireless communication system (1) is a wireless backhaul. Route from the core node (3) to the slave node (5) it is established. Core node (3), the slave node (5), a plurality of training packets, transmits gives a predetermined transmission period. Slave node (5), to the transmission period determining system (7), and transmits the first and last training packet number Num received training packets and duplicated without received. Estimating unit (21), to estimate the training time T. Training time T, the slave node (5) is a time for receiving a plurality of training packets. Calculator (23) calculates the candidate training metrics from the ratio of T and Num. Updating unit (25) compares the value of the current training metric is compared with the value of a candidate training metrics, either to determine the IPT transmission period, and changes the transmission cycle to perform the process again.