METHOD FOR OBTAINING SYNCHRONIZATION BETWEEN DEVICES IN WIRELESS ACCESS SYSTEM SUPPORTING DEVICE-TO-DEVICE COMMUNICATION, AND DEVICE SUPPORTING SAME

摘要

The present invention, which is used in a wireless access system supporting device-to-device (D2D) communication, defines a new random access channel region and provides methods for obtaining synchronization between D2D devices in the new random access channel region, and devices supporting same. The method for obtaining synchronization between devices in a wireless access system supporting device-to-device (D2D) communication, according to one embodiment of the present invention, may comprise: a step in which a first terminal receives a D2D preamble from a second terminal via a D2D random access channel (RACH) region in an RACH region; a step in which the first terminal obtains synchronization with the second terminal by using the D2D preamble; and a step in which the first terminal performs D2D communication with the second terminal. The RACH region may comprise a legacy RACH region to which a legacy preamble for performing an RACH procedure with a base station is transmitted, and the D2D RACH region.

主权项

1. A method for obtaining synchronization between devices in a wireless access system, which supports device-to-device (D2D) communication, the method comprising:
receiving, by a first user equipment from a second user equipment, a D2D preamble through a D2D random access channel (RACH) region of an RACH region; obtaining, by the first user equipment, synchronization with the second user equipment by using the D2D preamble; and performing, by the first user equipment, D2D communication with the second user equipment, wherein the RACH region includes a legacy RACH region to which a legacy preamble for performing an RACH procedure with a base station is transmitted, and the D2D RACH region.