| 摘要 |
Embodiments of the present invention provide a data transmission method and an apparatus. The method includes: receiving, by user equipment UE, indication information sent by an access node of a cellular access network, where the indication information includes a filtering condition, and the indication information is used to instruct the UE to transmit, by using a wireless local area network WLAN, a traffic flow that meets the filtering condition; determining, by the UE according to the indication information, that a first traffic flow meets the filtering condition; and transmitting, by the UE, the first traffic flow by using the WLAN. Therefore, according to an indication of the access node of the cellular access network, the UE may choose to transmit the traffic flow by using the WLAN, so that the UE completes WLAN route selection for the traffic flow and matching of a cellular access network transmission bearer at a time, which is simple in implementation; in addition, when an access device of the cellular access network sends a first indication message, a real-time status of the cellular access network and the WLAN network and a characteristic of the traffic flow are considered, thereby improving data transmission efficiency. |
