| abstract |
Disclosed are an ACK/NACK feedback information transmission method and device. By applying the technical solution in the embodiments of the present invention, for the situation where a terminal device only receives a PDCCH with the values of SPS PDSCH and DAI being 1 from a feedback window, the terminal device transmits ACK/NACK feedback information over the corresponding PUCCH format 1a/1b resources using the PUCCH format lb with channel selection or ACK/NACK combination mode, thus a corresponding solution is proposed for the situation where the base station configures to perform feedback using the PUCCH format 3 resources, but the terminal device cannot obtain the corresponding PUCCH format 3 resources, ensuring normal transmission of the corresponding ACK/NACK feedback information. |