| 摘要 |
The present invention relates to the technical field of communications, and disclosed are a data transmission method and device, so as to decrease a delay during data packet transmission. The method comprises: a sender initially transmitting a data packet or a data packet group to a receiver; until receiving acknowledgement (ACK) information, sent by the receiver and corresponding to the data packet or the data packet group, the sender retransmitting the data packet or the data packet group to the receiver at least once, the ACK information indicating that the receiver correctly receives the data packet or the data packet group. The present invention is mainly applied in the field of data packet transmission.
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