DEVICE-TO-DEVICE COMMUNICATION METHOD, APPARATUS AND SYSTEM

摘要

Embodiments of the present invention provide a device-to-device communication method, apparatus, and system. The method includes acquiring configuration information of proximity discovery sent by a base station, where the configuration information includes signal duration and a sending delay time of a proximity discovery message; and using downlink timing of the proximity discovery as a start time, and after the sending delay time elapses, sending the proximity discovery message in the signal duration of the proximity discovery message, so that a receiving terminal may receive the proximity discovery message in a receiving delay time after the downlink timing of the proximity discovery, where the downlink timing of the proximity discovery is downlink timing of the terminal in a downlink in a cell in which the base station is located. The technical solutions in the embodiments of the present invention can implement D2D communication on a basis of an existing mobile communications system, implement proximity discovery over a frequency spectrum of the existing mobile communications system, and implement synchronization of the proximity discovery by using timing of an existing communications system.