Method for controlling data retransmission at final retransmission time in wireless network

This invention provides a method for controlling data duplicate transmission used in the last time of duplicate transmission of a communication device of a receiving party in the radio network applying automatic repeat request system and a related assistant method for controlling data duplicate transmission, a control device and a related assistant control device. This invention also provides communication equipment of radio network applying automatic repeat request system, in which, said equipment can be network equipment or user devices and avoids signaling error at the last time of duplicate transmission and utilizes radio communication resources effectly.