| 摘要 |
Embodiments of the present invention provide an information transmission method and device. The method includes: detecting, by user equipment in a downlink subframe set N, physical downlink shared channel PDSCH transmission or a downlink control channel indicating downlink semi-persistent scheduling SPS release; sending, by the user equipment, in an uplink subframe n corresponding to the downlink subframe set N, a hybrid automatic repeat request-acknowledgment response that corresponds to the PDSCH transmission or corresponds to the downlink control channel indicating downlink semi-persistent scheduling SPS release, where n is a subframe number and n is a positive integer greater than or equal to 0. In the information transmission method and device provided by the embodiments of the present invention, HARQ-ACK timing of an FDD serving cell is designed to resolve a problem that some downlink subframes on the FDD serving cell do not have corresponding uplink subframes for feeding back HARQ-ACK responses, so that a base station can send information to user equipment in more downlink subframes, thereby improving the utilization of system resources. |
