FIELD: radio engineering, communication.
SUBSTANCE: method is performed by accomplishing steps of method of data retransmitting in the Hybrid Automatic Repeat Request Mode, HARQ. In the multi-antenna wireless communication system, through the UE's: the acknowledgment feedback/negative acknowledgment feedback, ACK/NACK, relating to the data transmitted in the two data streams: the primary stream and the secondary stream, are received. Mentioned above ACK/NACK feedback information includes an ACK/NACK connected with the primary stream data and an ACK/NACK connected with the secondary stream data; and, after the rank is reduced from the rank 2 transmission mode in which the data is transmitted in the primary stream and the secondary stream to the rank 1 transmission mode in which the data is transmitted in the primary stream and in which only one stream is available for transmission, the data connected with NACK from the secondary stream, is retransmitted in the primary stream.
EFFECT: providing time-saving and stable transmissions and retransmissions of HARQ in case of a drop in rank in a multi-antenna wireless communication system.
28 cl, 21 dwg, 2 tbl
