Method and apparatus for obtaining synchronization for communication between devices

摘要

A method and an apparatus for obtaining synchronization of a terminal for communication between devices when a base station collapses are provided. The method includes, when a preamble signal is not received from the base station, maintaining a first synchronization for a predetermined time using a timer, transmitting a first preamble signal at a first synchronization point, performing a synchronization procedure with at least one neighbor terminal based on the first preamble signal, and, after the synchronization procedure, performing communication with the at least one neighbor terminal. In addition, when a preamble signal is not received from a base station, a first preamble signal from a relevant neighbor terminal is monitored for a predetermined time. When the first preamble signal is not received from the relevant neighbor terminal for the predetermined time, a second preamble signal is transmitted at an arbitrary point.

主权项

1. A method for operating a terminal, the method comprising:
monitoring a preamble signal from a base station; transmitting a first preamble signal based on a synchronization with the base station, if the terminal fails to receive the preamble signal from the base station; and performing communication with a neighbor terminal which receives the first preamble signal from the terminal.