A sink device for wirelessly receiving video data from a source device, the sink device comprising: a display; communication circuitry configured to communicate with the source device; and a controller configured to: perform a Wi-Fi Display, WFD, device discovery process by transmitting a probe request frame for detecting the source device via the communication circuitry and receiving a probe response frame from the source device receiving the probe request frame via the communication circuitry, obtain information specifying one or more external input sources of the source device from the received probe response frame, display a list of the one or more external input sources of the source device on the display, using the obtained information, receive an input to select one from the displayed list of the one or more external input sources of the source device, and in response to receiving the input to select the one external input source of the source device, establish communication with the source device based on the Wi-Fi Direct communication standard and transmit a control signal for receiving video data from the selected external input source of the source device. a display; communication circuitry configured to communicate with the source device; and a controller configured to: perform a Wi-Fi Display, WFD, device discovery process by transmitting a probe request frame for detecting the source device via the communication circuitry and receiving a probe response frame from the source device receiving the probe request frame via the communication circuitry, obtain information specifying one or more external input sources of the source device from the received probe response frame, display a list of the one or more external input sources of the source device on the display, using the obtained information, receive an input to select one from the displayed list of the one or more external input sources of the source device, and in response to receiving the input to select the one external input source of the source device, establish communication with the source device based on the Wi-Fi Direct communication standard and transmit a control signal for receiving video data from the selected external input source of the source device. perform a Wi-Fi Display, WFD, device discovery process by transmitting a probe request frame for detecting the source device via the communication circuitry and receiving a probe response frame from the source device receiving the probe request frame via the communication circuitry, obtain information specifying one or more external input sources of the source device from the received probe response frame, display a list of the one or more external input sources of the source device on the display, using the obtained information, receive an input to select one from the displayed list of the one or more external input sources of the source device, and in response to receiving the input to select the one external input source of the source device, establish communication with the source device based on the Wi-Fi Direct communication standard and transmit a control signal for receiving video data from the selected external input source of the source device.