Method, device, computer program, and recording medium for audio processing in wireless communication system
The present disclosure relates to a method, a device, a computer program, and a recording medium for audio processing in a wireless communication system. A method for transmitting metadata related to broadcast audio data in a Wireless communication system according to one embodiment of the present disclosure comprises the steps of: transmitting a first pointer packet including one or more pieces of metadata in a first channel, and transmitting an audio packet including one or more pieces of broadcast audio data related to the one or more pieces of metadata on a second channel indicated by the first pointer packet, wherein each of the one or more pieces of metadata may include information indicating a characteristic of one piece of broadcast audio data related to said piece of metadata.
1 . A method performed by a broadcast source in a wireless communication system, the method comprising:
advertising 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 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 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.
2 . The method of claim 1 , wherein:
the at least one metadata includes at least one of a language code, a target-listener, or a program information text of the at least one broadcast audio data associated with the at least one metadata.
3 . The method of claim 2 , wherein:
the target-listener is related to an age.
4 . The method of claim 1 , wherein:
the at least one metadata has a length, type and value (LTV) structure.
5 . The method of claim 4 , wherein:
based on the first pointer packet including a plurality of metadata, the first pointer packet includes a plurality of the LTV structures.
6 . The method of claim 1 , wherein:
the first pointer packet and the audio packet are transmitted based on a periodic advertisement procedure.
7 . The method of claim 6 , wherein:
the first pointer packet is an AUX_ADV_IND packet, and the audio packet is received based on an AUX_SYNC_IND packet.
8 . The method of claim 1 , further comprising:
advertising, on a third channel, a second pointer packet indicating the first channel through which the first pointer packet is transmitted, before advertising the first pointer packet.
9 . The method of claim 8 , wherein:
the second pointer packet, the first pointer packet, and the audio packet are transmitted based on a periodic advertisement procedure.
10 . The method of claim 9 , wherein:
the second pointer packet is an ADV_EXT_IND packet,
the first pointer packet is an AUX_ADV_IND packet, and
the audio packet is received based on an AUX_SYNC_IND packet.
11 . The method of claim 1 , wherein:
the audio packet further includes the at least one metadata.
12 . 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.
13 . 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.