Embodiments of the present disclosure resolve problem of power consumption caused because an AP is frequently woken up. This solution includes: receiving, by a modem, pre-processing information, which is sent by an application processor AP, of an application, where the pre-processing information includes at least a period range value and first data that are of the application, the period range value is used to represent frequency at which the application needs the AP to send and receive the first data, and the first data is data that the application needs the AP to send to a server; invoking, by the modem, preset functions according to the period range value and a time at which the modem receives the pre-processing information, to determine a sending time of the first data; and sending, by the modem, the first data to the server according to the sending time.