Method for transmitting audio data by using short-range wireless communication in wireless communication system, and apparatus for same

A source device that transmits audio data in a short-range wireless communication system comprising:

• a transmitter configured to transmit a wireless signal;
• a receiver configured to receive a wireless signal;
• at least one processor;
• and
• at least one computer memory operably connected to the at least one processor, and storing instructions for performing operations when being executed by the at least one processor,
• wherein the operations includes:
• forming a connection with a sink device;
• based on the formed connection, performing a setup procedure for transmitting the audio data with the sink device;
• and
• transmitting the audio data to the sink device based on the setup procedure,
• wherein the performing the setup procedure further includes transmitting, to the sink device, timing information on transmission timing of the audio data and metadata information for transmission of the audio data, and
• the audio data is transmitted without transmission of periodic advertisement messages for transmission of the timing information and the metadata information.