Abstract: The system of the present invention includes a first radio station and a plurality of second radio stations that communicate via a limited radio resource having a limited time slot and a limited frequency band allocated in advance. The first radio station performs control not to request the plurality of second radio stations to re-transmit transmission data when detecting a receive error in the transmission data from the plurality of second radio stations to the first radio station. Each of the plurality of second radio stations performs control, when detecting a receive error in transmission data from the first radio station to the second radio station, not to request the first radio station to re-transmit the transmission data in which the receive error has been detected, but to receive the transmission data re-transmitted according to a upper layer protocol from a communication partner radio station with which communication on the upper layer has already been established.