Method for supporting device to device synchronization and identification in wireless access system that supports device to device communication

摘要

The present invention relates to methods for efficiently performing device to device synchronization and device identification in a device to device communication system, and devices for supporting the methods. The method for supporting device to device synchronization and identification in a wireless access system that supports device to device communication according to one embodiment of the present invention comprises the steps of: allowing a first device to broadcast a RACH signal for device to device synchronization in a peer discovery section; allowing the first device to receive a first response message transmitted from a second device as a response to the RACH signal; and transmitting a message including device identification information for the first device to the second device.

主权项

1. A method performed by a first device for supporting simultaneous synchronization with a base station (BS) and identification of and synchronization with other devices in a radio access system supporting device-to-device (D2D) communication, the method comprising:
broadcasting a random access channel (RACH) signal for synchronization with the BS and the other devices when in an idle mode during a peer discovery interval defined for peer discovery between the first device and the other devices; receiving a first response message from a second device among the other devices and a second response message from the BS in response to the RACH signal; synchronizing with the second device and identifying the second device based on information included in the first response message; and synchronizing with the BS based on information included in the second response message.