Patent ID: 8565106

Claim:
A method for mobile station (MS) location estimation in the Worldwide Interoperability for Microwave Access (WiMAX) communication systems comprising the following steps: a) WiMAX MS measurement of received signal strength of at least two base stations, where base station one is a serving base station (BS 1 ); b) WiMAX MS measurement of a relative delay which denotes a propagation delay difference between the BS 1 and a non-serving base station (BS 2 ); c) Sending data corresponding to the WiMAX MS measurements to the location server; d) Calculation of an area of MS locations based on relative delay applying time difference of arrival method; e) Bounding the area of MS locations applying received signal strength value of the BS 2 and its approximation of an antenna diagram using cos n approximation, antenna tilt and azimuth applying angle of arrival method; f) Estimation of an approximation of the MS location applying center of gravity calculation for the area of MS locations assuming uniform distribution of the weight over area; g) Calculation of a weight distribution for the area of MS locations based at least in part on radio signal from BS 1 ; h) Estimation of a new approximation of MS location considering a previous approximation and a calculated center of gravity in step g; i) Calculation of a weight distribution for the area of MS locations based at least in part on radio signal from BS 2 ; j) Estimation of a new approximation of MS location considering a previous approximation and a calculated center of gravity in step i; k) exiting from the iterative loop based at least in part on a predetermined criteria; and l) determining a new area of MS locations.