Patent ID: 7139584

Claim:
A method of a mobile unit positioning, for using in a base station of a wireless communication system for positioning the mobile unit according to a wireless signal transmitted by the mobile unit, the base station including a first antenna and a second antenna, the first antenna outputting a first communication signal according to the wireless signal and the second antenna outputting a second communication signal according to the wireless signal, the method comprising the steps of: calculating a distance between the mobile unit and the base station according to timing information provided by the base station; (a) calculating an angle of arrival which the wireless signal makes with respect to the base station, according to the first communication signal and the second communication signal said step (a) comprising: receiving the first communication signal and the second communication signal in a time-switching manner; cross-correlating the received first communication signal and the received second communication signal to calculate a plurality of cross-correlation parameters; outputting an average of the cross-correlation parameters according to the cross-correlation parameters; and determining the angle of arrival according to the average of the cross-correlation parameters and a relative position between the first antenna and the second antenna; and positioning the mobile unit according to the angle of arrival and the distance.