DATA TRANSMISSION METHOD AND DEVICE

摘要

The present invention relates to a data transmission method and apparatus. The data transmission method includes: acquiring associated count values of received protocol data units PDUs, where the received PDUs are PDUs that a first data link layer receives from N data streams at a second data link layer, and N ‰¥ 2; determining N candidate count values, where the N candidate count values are in a one-to-one correspondence with the N data streams, and the candidate count value is a maximum value of associated count values of PDUs from each data stream and in the received PDUs; selecting a minimum value from the N candidate count values as a currently submissible count value; and when the associated count values of the received PDUs meet a submitting condition set according to the currently submissible count value, submitting PDUs of which associated count values meet the submitting condition to an upper-layer communication layer of the first data link layer.