A display device and a method of controlling the same are provided. The display device may include: a communicator comprising communication circuitry configured to receive a wireless signal transmitted by a wireless router, a memory configured to store one or more instructions, and a processor configured to execute the one or more instructions stored in the memory, wherein the processor may be configured to continuously retrieve multipath channel characteristic data based on the wireless signal, perform preprocessing on the retrieved multipath channel characteristic data of the wireless signal, determine representative values for each reference time by calculating a similarity for each time period of result data corresponding to a result of the preprocessing, determine a motion within a specified region of the display device, based on a change in the representative values over time, and control the display device based on the determined motion within the specified region of the display device.