A display device and a method of controlling the same are provided. According to various example embodiments, the display device may include: a communicator comprising communication circuitry configured to receive a wireless signal transmitted by a wireless router, and a processor configured to: retrieve multipath channel characteristic data based on the wireless signal, generate similarity data representing a similarity for each time period of the multipath channel characteristic data, adjust a threshold based on the similarity data, and increasing the threshold based on the similarity data based on the environmental indicator having appeared, measure a motion around the display device based on a comparison result between the similarity data and the threshold, and control the display device based on the motion within a specified range of the display device.