The present disclosure relates to a method and device for a control device to set an audio channel in a wireless communication system by using Bluetooth Low Energy technology. According to the present disclosure, an advertising packet is received from each of a plurality of devices, wherein the advertising packet includes at least one among location information, codec information, and/or role information for the respective device. The control device transmits a plurality of pieces of setting information, for providing an audio service, to the plurality of devices on the basis of the advertising packet, wherein each piece of setting information includes delay information about the respective device, and the control device transmits channel setting information for an isochronous channel, for providing the audio service, to the plurality of devices.