Method is provided, including: determining, by a base station, a current time period in which an end moment of a current control channel is located in a first transmission time interval (TTI), where the first TTI includes at least two time periods, and a start moment of a data channel corresponding to a control channel that ends in each of the at least two time periods is located in a different TTI; sending, by the base station to user equipment in the first TTI, control information carried on the current control channel, where the control information is configured to schedule a current data channel corresponding to the current control channel; determining, by the base station, a second TTI in which a start moment of the current data channel is located; and exchanging, by the base station, data of the current data channel with the user equipment in the second TTI.