Abstract: An OFDMA power control method includes: transmitting a first trigger frame to a station, wherein the first trigger frame includes a first target RSSI; receiving a first TB-PPDU from the station, wherein the first TB-PPDU is transmitted by the station using a first power according to the first target RSSI; measuring a first power of the first TB-PPDU to obtain a first measured RSSI; and generating a second the target RSSI according to the first measured RSSI.