FIELD: radio engineering, communication.
SUBSTANCE: data retransmission method includes steps where: if a network indicates switching from a dual stream transmission mode to a single stream transmission mode, stopping data transmission of one data stream, and clearing data in a HARQ process of the stopped data stream; or if a network indicates switching from a single stream transmission mode to a dual stream transmission mode, transmitting retransmission data in a HARQ process of the original data stream without changing the HARQ process number, and transmitting new data in the HARQ process of a new data stream; or using the retransmission data of the original data stream as new data to transmit in the HARQ process of either the original data stream or new data stream.
EFFECT: efficient reduction of data loss and achieving fast data retransmission when switching single and dual stream transmission modes.
5 cl, 8 dwg
