Method, device, computer program, and recording medium for audio processing in wireless communication system

A method performed by a broadcast sink in a wireless communication system, the method comprising:

• receiving a first pointer packet including at least one metadata on a first channel, wherein the first pointer packet includes advertising data without audio data;
• and
• receiving an audio packet including at least one broadcast audio data associated with the at least one metadata on a second channel indicated by the first pointer packet, wherein the audio packet is broadcast by a broadcast source,
• wherein each of the at least one metadata includes information indicating a characteristic of one broadcast audio data associated with the each of the at least one metadata,
• wherein the advertising data includes a header field and an AdvData field, the AdvData field includes at least one AD structure, and an AD structure includes a length field, an AD type field, and an AD Data field, and
• wherein the advertising data includes the at least one metadata.

A device of a broadcast source in a wireless communication system, the device comprising:

• a transceiver for performing signal transmission and reception with another device;
• and
• a processor for controlling the transceiver and the device,
• wherein the processor is configured to:
• advertising, through the transceiver, a first pointer packet including at least one metadata on a first channel, wherein the first pointer packet includes advertising data without audio data;
• and
• broadcasting, through the transceiver, an audio packet including at least one broadcast audio data associated with the at least one metadata on a second channel indicated by the first pointer packet,
• wherein each of the at least one metadata includes information indicating a characteristic of one broadcast audio data associated with the each of the metadata,
• wherein the advertising data includes a header field and an AdvData field, the AdvData field includes at least one AD structure, and an AD structure includes a length field, an AD type field, and an AD Data field, and
• wherein the advertising data includes the at least one metadata.