Apparatus and method for positioning in wireless communication system

A location estimating apparatus in a wireless communication system and a method thereof are provided to estimate the location of a terminal without error even in case a repeater is installed. A terminal receives information required for measuring a position from a base station(1001), determines whether the location measurement is needed(1003), checks whether signals received from a repeater exist by performing the IFFT(Inverse Fast Fourier Transform) and inspecting the subcarrier values of a specific band(1005), and then determines a measurement mode according to the information required for measuring a position and the existence of the repeater(1007). The terminal obtains at least one TDOA value by measuring the TDOA according to the determined measurement mode(1009).