Embodiments of the present invention provide a data transmission method, user equipment, and a base station. The method can include receiving, by user equipment, indication information for stopping transmission sent by a base station, where the indication information for stopping transmission is configured to instruct the user equipment to stop transmitting uplink data for at least one service by through an access point AP of a wireless local area network WLAN. The method can also include stopping, by the user equipment according to the indication information for stopping transmission, transmitting the uplink data for the at least one service through the AP. In this process, the user equipment reduces a data volume of uplink data transmitted through the WLAN, so as to decrease a probability that an uplink data collision occurs in the WLAN, thereby improving service quality.