METHOD, ACCESS POINT, AND STATION FOR DATA TRANSMISSION

摘要

Embodiments of the present invention provide a data transmission method, an access point, and a station. The method includes: sending an indication frame to an access point AP, where the indication frame includes first indication information and second indication information, the first indication information is used to indicate that a type of the indication frame is a PS-POLL frame, and the second indication information is used to indicate duration of the indication frame; and sending a data frame to the AP within the duration indicated by the second indication information. According to the embodiments of the present invention, an STA sends PS-POLL to an AP by using an indication frame and reserves channel duration, so that the STA does not need to contend for a channel again when the STA sends an uplink data frame to the AP after receiving a downlink data frame sent by the AP, which allows the STA to receive downlink data and send uplink data within one TXOP, thereby reducing resources consumed when the STA contends for a channel and improving an energy utilization rate of the STA.