Method, apparatus and computer program for broadcast discovery service in wireless communication system, and recording medium therefor

A method for a broadcast audio scan service performed by a first device in a wireless communication system, the method comprising:

• receiving, by the first device from a second device, information indicating that the second device performs scanning on behalf of the first device, wherein the first device supports at least one characteristic related to the broadcast audio scan service and the second device accesses the at least one characteristic of the first device;
• providing, by the first device to the second device, broadcast reception state information on the first device,
• wherein the broadcast reception state information represents a current synchronization state of the first device with respect to each of one or more broadcast sources, and
• wherein the current synchronization state includes at least one of a periodic advertisement synchronization state or a broadcast isochronous stream synchronization state;
• and
• receiving, by the first device from the second device, information on a target broadcast source requesting the first device to synchronize to at least one of the periodic advertisement or the broadcast isochronous stream of the target broadcast source.

A second device for performing a broadcast audio scan service in a wireless communication system, the device comprising:

• a memory;
• a transceiver;
• and
• a processor,
• wherein the processor is configured to:
• transmit, to a first device through the transceiver, information indicating that the second device performs scanning on behalf of the first device, wherein the first device supports at least one characteristic related to the broadcast audio scan service and the second device accesses the at least one characteristic of the first device;
• obtain, from the first device through the transceiver, broadcast reception state information on the first device,
• wherein the broadcast reception state information represents a current synchronization state of the first device with respect to each of one or more broadcast sources, and
• wherein the current synchronization state includes at least one of a periodic advertisement synchronization state or a broadcast isochronous stream synchronization state;
• and
• transmit, to the first device through the transceiver, information on a target broadcast source requesting the first device to synchronize to at least one of the periodic advertisement or the broadcast isochronous stream of the target broadcast source.

A first device for performing scan offloading by another device in a wireless communication system, the device comprising:

• a memory;
• a transceiver;
• and
• a processor;
• wherein the processor is configured to:
• receive, from a second device through the transceiver, information indicating that the second device performs scanning on behalf of the first device, wherein the first device supports at least one characteristic related to the broadcast audio scan service and the second device accesses the at least one characteristic of the first device;
• provide, to the second device, broadcast reception state information on the first device,
• wherein the broadcast reception state information represents a current synchronization state of the first device with respect to each of one or more broadcast sources, and
• wherein the current synchronization state includes at least one of a periodic advertisement synchronization state or a broadcast isochronous stream synchronization state;
• and
• receive, from the second device through the transceiver, information on a target broadcast source requesting the first device to synchronize to at least one of the periodic advertisement or the broadcast isochronous stream of the target broadcast source.