The embodiments of the present invention are relate to wireless communications. In the embodiments of the present invention, a first terminal determines configuration information for determining a target communication period, wherein the target communication period is a period in which direct communication interface sending and/or receiving can be performed by means of a direct communication interface; and the first terminal determines the target communication period according to the configuration information and notifies a second terminal of the configuration information by means of the direct communication interface, so that the terminal performing direct communication determines the target communication period according to the configuration information and performs direct communication interface sending and/or receiving in the target communication period. Therefore, there is no need to continuously monitor a system broadcast or continuously monitor a pre-configured D2D receiving resource, thereby saving power.