The DCI or a specific parameter includes time information, the specific parameter is a parameter preset in the downlink information receiving apparatus 23 or a parameter received by the downlink information receiving apparatus 23 from a system message, the time information is used to indicate a time at which the downlink information receiving apparatus 23 receives downlink information sent by the base station, and the downlink information is used to indicate whether the base station receives the uplink data correctly; and the time information specifically includes an interval from a preset time point to the time at which the downlink information is received; or the DCI further carries scheduling information, excluding the time information, of the downlink information receiving apparatus 23 and scheduling information of another downlink information receiving apparatus, the downlink information receiving apparatus 23 and the another downlink information receiving apparatus form a downlink information receiving apparatus set, and the time information carried in the DCI specifically includes a sequence number of the downlink information receiving apparatus 23 in the downlink information receiving apparatus set for receiving the downlink information after a preset time point.
The preset time point is a parameter received by the downlink information receiving apparatus 23 from the DCI or the system message, or a parameter preset in the downlink information receiving apparatus 23.
The receiving module 232 is configured to receive the downlink information at the time indicated by the time information.