Method and apparatus for obtaining synchronization for communication between devices

A method for operating a terminal, the method comprising:

• monitoring a synchronization signal from a base station;
• monitoring a first synchronization signal from a neighbor terminal;
• transmitting a second synchronization signal, if the terminal fails to receive the first synchronization signal;
• and
• performing communication with a first neighbor terminal which receives the second synchronization signal.

An apparatus for a terminal, the apparatus comprising:

• a controller configured to monitor a synchronization signal from a base station;
• and
• a transmitter configured to, transmit a first synchronization signal based on synchronization with the base station,
• wherein the controller is further configured to perform communication with a neighbor terminal which receives the first synchronization signal from the terminal.

An apparatus for a terminal, the apparatus comprising:

• a controller configured to monitor a synchronization signal from a base station, and, to monitor a first synchronization signal from a neighbor terminal, if the terminal fails to receive the synchronization signal from the base station;
• and
• a transmitter configured to transmit a second synchronization signal,
• wherein the controller is further configured to perform communication with the at least one neighbor terminal which receives the second synchronization signal.