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

1. A method of transmitting audio data, by a third device, in a short-range wireless communication system, the method comprising:

receiving, from a first device and a second device, respectively, capability information related to audio data output capabilities of the first device and the second device;

determining whether to establish a channel for audio data transmission with the first device and the second device based on the capability information;

transmitting, to the first device and the second device, respectively, configuration information for outputting audio data of the first device and the second device, based on the determination result; and

transmitting, to the first device and the second device, the audio data;

wherein positions of the first device and the second device and an audio data output time of the first device and the second device are determined based on the configuration information, and

wherein the capability information includes (i) broadcast support information on whether the first device and the second device can receive the audio data based on a broadcast method and (ii) effective audio data output volume information related to a volume at which the first device and the second device can output the audio data.

2. The method of claim 1 ,

wherein the capability information includes frequency response range information related to a frequency range in which the first device and the second device can output the audio data.

3. The method of claim 2 ,

wherein the capability information further comprises sound pressure level (SPL) information of the first device and the second device.

4. The method of claim 3 ,

wherein the SPL information is determined based on audio data output volumes of the first device and the second device set to a specific value being measured at a specific distance.

5. The method of claim 4 ,

wherein the specific value is 1 watt and the specific distance is 1 meter.

6. The method of claim 1 ,

wherein the capability information further includes frequency response curve information related to the frequency response curves of the first device and the second device,

wherein the frequency response curve represents audio data output volumes of the first device and the second device for each frequency, and

wherein the frequency response curve information is configured based on (i) a partial frequency extracted from an entire frequency range included in the frequency response curve and (ii) a partial audio data output volume for each of the partial frequency.

7. The method of claim 2 ,

wherein the configuration information includes position information related to positions of the first device and the second device in the short-range wireless system.

8. The method of claim 7 ,

wherein the configuration information further includes output timing information on the audio data output time of the first device and the second device, and

wherein the output timing information is configured based on a distance between each of (i) positions of the first device and the second device and (ii) a position of a user listening to the audio data output from the first device and the second device.

9. The method of claim 8 ,

wherein receiving the capability information further comprises:

transmitting, to the first device and the second device, respectively, a read request message for obtaining the capability information from a first characteristic of the first device and the second device in which the capability information is stored; and

receiving, from the first device and the second device, respectively, a read response message including the capability information.

10. The method of claim 9 ,

wherein transmitting the configuration information further comprises:

transmitting, to the first device and the second device, respectively, a write request message for writing the position information and the output timing information to second characteristics of the first device and the second device; and

receiving, from the first device and the second device, respectively, a write response message including information related to whether or not the writing of the position information and the output timing information is successful.

11. The method of claim 10 ,

wherein the first characteristic is a Published Audio Capability Service (PACS) characteristic,

wherein the second characteristic is an Audio Stream Control Service (ASCS) characteristic.

12. A method of receiving audio data by a first device in a short-range wireless communication system, the method comprising:

transmitting, to a third device, capability information related to the audio data output capability of the first device,

wherein whether to establish a channel with the third device for receiving the audio data is determined based on the capability information, and

wherein the capability information includes (i) broadcast support information on whether the first device and the second device can receive the audio data based on a broadcast method and (ii) effective audio data output volume information related to a volume at which the first device and the second device can output the audio data;

receiving, from the third device, configuration information for outputting audio data of the first device based on whether the channel is established;

receiving, from the third device, the audio data; and

determining a position of the first device and an audio data output time of the first device based on the configuration information.

13. A third device for transmitting audio data in a short-range wireless communication system, the third device comprising:

a transmitter for transmitting a radio signal;

a receiver for receiving a radio signal; and

a processor operatively connected to the transmitter and the receiver;

wherein the processor is configured to:

receive, from a first device and a second device, respectively, capability information related to audio data output capabilities of the first device and the second device;

determine whether to establish a channel for audio data transmission with the first device and the second device based on the capability information;

transmit, to the first device and the second device, respectively, configuration information for outputting audio data of the first device and the second device, based on the determination result; and

transmit, to the first device and the second device, the audio data;

wherein positions of the first device and the second device and an audio data output time of the first device and the second device are determined based on the configuration information, and

wherein the capability information includes (i) broadcast support information on whether the first device and the second device can receive the audio data based on a broadcast method and (ii) effective audio data output volume information related to a volume at which the first device and the second device can output the audio data.

14. A first device for receiving audio data in a short-range wireless communication system, the first device comprising:

a transmitter for transmitting a radio signal;

a receiver for receiving a radio signal; and

a processor operatively connected to the transmitter and the receiver;

wherein the processor is configured to:

transmit, to a third device, capability information related to the audio data output capability of the first device,

wherein whether to establish a channel with the third device for receiving the audio data is determined based on the capability information, and

wherein the capability information includes (i) broadcast support information on whether the first device and the second device can receive the audio data based on a broadcast method and (ii) effective audio data output volume information related to a volume at which the first device and the second device can output the audio data;

receive, from the third device, configuration information for outputting audio data of the first device based on whether the channel is established;

receive, from the third device, the audio data; and

determine a position of the first device and an audio data output time of the first device based on the configuration information.