Uplink transmission method and apparatus

Embodiments of the present invention provide an uplink transmission method and apparatus, for use in resolving the problem of resources wasting in existing uplink transmission. The method comprises: an AP sends a first triggering frame, the first triggering frame comprising indication information of a first triggering interval of the first triggering frame; and the AP determines whether to send an AP response frame before each of t first transmission cycles in the first triggering interval; until the AP determines to send the AP response frame, the AP sends the AP response frame, the AP response frame comprising acknowledgment information of all or part of content of the uplink PPDU and/or triggering information of the uplink PPDU successfully received by the AP in a transmission cycle before the AP response frame, and the t first transmission cycles being transmission cycles in which the AP can transmit the AP response before a transmission cycle in N transmission cycles in the first triggering interval. The present invention is applicable to the field of wireless communications.