Data transmission method using ACK transmission opportunity in wireless network

Problem which the present invention to solve the first to rank the ACK is sent to the piggyback data through a transmission opportunity for high-ACK in a wireless network for improving the transmission efficiency in the wireless network to provide a data transmission method using the transmission opportunity of the ACK will be. Data transmission method using the transmission opportunity of the ACK in a wireless network, comprising the steps of a given STA received a radio channel for transmitting data to the AP (S100); Step of the of the specific STA transmitting the data over a radio channel to the AP (S200); Analyzing whether or not the AP is received the data there is data to be transmitted to any of the STA (S300); And wherein, if the analysis that for which data exists to transmit at the S300 step, the step of transmitting the ACK is piggybacked (Piggy back) data priority than the data via a transmission opportunity for high-ACK to the given STA (S400 ) it characterized in that it comprises a. According to the present invention, priority and sends an ACK that the piggybacked data by using the transmission opportunity for high-ACK, Thus it can transmit data at the same time as transmission of the ACK does not take a channel contention and DIFS time of the radio there is an effect that can improve the transmission performance of the network.