| 摘要 |
The present invention provides a method, system and apparatus for transmitting ACK/NACK information; the method includes: A. performing, by a base station, a joint numbering for physical downlink control channels, PDCCH, sent by various downlink sub-frames of at last one component carrier, CC, and sending PDCCH and the downlink data PDSCH scheduled by the PDCCH to a UE; B. detecting, by the UE, whether there is a PDCCH lost currently according to the number of PDCCHs; if there is no PDCCH lost, performing step C; C. feeding back, by the UE, the ACK/NACK information corresponding to the currently-received PDSCH to the base station at least at the ACK/NACK channel mapped by the last currently-received PDCCH. In accordance with the present invention, it is possible to avoid the drawback caused by the UE feeding back the wrong ACK/NACK information to the base station in the prior art. |
