| 摘要 |
A data retransmission method, apparatus and system are provided by the present invention which relates to the communications field and can improve the success rate of the data packet retransmission. The data retransmission method includes: after the source node continuously transmits at least two data packets to the destination node according to the go-back-N automatic repeat request, the relay node monitors and decodes the at least two data packets; the copy of the data packet which is decoded successfully is stored; the response message to each data packet, which is returned from the destination node to the source node, is monitored; if the monitored response message is the reception failure message NACK, the copy of the data packet corresponding to the reception failure message NACK is transmitted to the destination node. |
