Wireless device supporting Wi-Fi direct service

A first wireless device supporting Wi-Fi Direct service, the first wireless device comprising:

• a display;
• a communication unit configured to communicate with a second wireless device;
• and
• a controller configured to:
• transmit resolution information to the second wireless device by using Real-Time Streaming Protocol (RTSP), the resolution information including a plurality of resolutions that are supported by the first wireless device;
• receive an entire image including a first image and a second image from the second wireless device if a resolution of the first image is not one of the plurality of resolutions;
• display the first image by removing the second image from the received entire image;
• and
• receive the first image from the second wireless device without the second image if the resolution of the first image is included in the resolution information,
• wherein the second image is an image that is added to the first image such that a resolution of the received entire image corresponds to one of the plurality of resolutions.