Communication system, communication device, and communication method

摘要

Respective nodes N 1 to N 3 only detect a carrier, and the node N 3 sets a random time between a time after a certain period of time t 1 and a time until a certain period of time t 2 after the carrier of data D 11 is gone as a waiting time so as to transmit data within this waiting time. The node N 2 transmits ACK data D 12 with respect to the data D 11 to the node N 1 before the certain period of time t 1 after the carrier of the data D 11 is gone. The node N 3 detects the carrier of the ACK data D 12 and again sets a random time after the certain period of time t 1 until the certain period of time t 2 to transmit the data.