Embodiments of this application provide a data transmission method, apparatus, and device. In the data transmission method, a first apparatus obtains a first link quality packet message that includes link quality information and indication information. The indication information is used to indicate that the link quality information is buffered. The first apparatus sends the first link quality packet message to a second apparatus, where the first link quality packet message is used by the second apparatus to perform network optimization based on the first link quality packet message. The data transmission method disclosed herein improves network optimization accuracy.