| 摘要 |
PURPOSE: A method for exchanging messages and a source device is provided to efficiently performing inter-device connection by providing time information on the connection to a sync device and on the connection preparation state of a source device to a sync device. CONSTITUTION: A sync device transfers a connection request message to a source device(S20), and the source device transfers a first connection response message(S21). The sync device outputs a failure reason and waiting time information(S22). The source device transfers a second response message to the sync device(S23). If the connection to the sync device is successful, the source device opens the connection to the sync device without the transmission of the second response message(S24). |
