A time slot scheduling method, comprising: selecting, by a network side device, from a plurality of scheduling information groups configured for a terminal, at least one scheduling information group to be used by the terminal; and the method further comprises: instructing, by the network side device, via Downlink Control Information, DCI, the terminal to use the at least one scheduling information group to carry out data transmission in one or more time slots; determining, by the network side device, a scheduling information group index, corresponding to the at least one scheduling information group, needing to be sent to the terminal according to a first corresponding relationship between scheduling information groups and scheduling information group indexes for the terminal configured by high-level signaling; determining, by the network side device, a position index, in the DCI, of a scheduling indication information domain corresponding to a time slot needing to be scheduled according to a second corresponding relationship between position indexes of scheduling indication information domains in the DCI and time slots; and sending, by the network side device, the scheduling information group index corresponding to the time slot needing to be scheduled to the terminal through the scheduling indication information domain in the DCI according to the position index. selecting, by a network side device, from a plurality of scheduling information groups configured for a terminal, at least one scheduling information group to be used by the terminal; and the method further comprises: instructing, by the network side device, via Downlink Control Information, DCI, the terminal to use the at least one scheduling information group to carry out data transmission in one or more time slots; determining, by the network side device, a scheduling information group index, corresponding to the at least one scheduling information group, needing to be sent to the terminal according to a first corresponding relationship between scheduling information groups and scheduling information group indexes for the terminal configured by high-level signaling; determining, by the network side device, a position index, in the DCI, of a scheduling indication information domain corresponding to a time slot needing to be scheduled according to a second corresponding relationship between position indexes of scheduling indication information domains in the DCI and time slots; and sending, by the network side device, the scheduling information group index corresponding to the time slot needing to be scheduled to the terminal through the scheduling indication information domain in the DCI according to the position index. instructing, by the network side device, via Downlink Control Information, DCI, the terminal to use the at least one scheduling information group to carry out data transmission in one or more time slots; determining, by the network side device, a scheduling information group index, corresponding to the at least one scheduling information group, needing to be sent to the terminal according to a first corresponding relationship between scheduling information groups and scheduling information group indexes for the terminal configured by high-level signaling; determining, by the network side device, a position index, in the DCI, of a scheduling indication information domain corresponding to a time slot needing to be scheduled according to a second corresponding relationship between position indexes of scheduling indication information domains in the DCI and time slots; and sending, by the network side device, the scheduling information group index corresponding to the time slot needing to be scheduled to the terminal through the scheduling indication information domain in the DCI according to the position index.