Patent ID: 8165599

Claim:
A method for locating a mobile station based on wireless communications between said mobile station and a wireless telecommunications network, said method comprising: for each antenna in a plurality of base station antennas in said wireless telecommunications network, obtaining a measurement of round-trip delay (RTD) in wireless communications between said mobile station and said antenna and obtaining a received signal strength (RSS) measurement of a wireless signal transmitted by said antenna and received by said mobile station, so as to obtain a plurality of RTD measurements and a plurality of RSS measurements; for each given antenna in said plurality of base station antennas, obtaining a respective significance value for said given antenna based, at least in part, on a given RTD measurement and a given RSS measurement corresponding to said given antenna, so as to obtain a plurality of significance values; identifying at least one significant base station antenna from among said plurality of base station antennas based on said significance values; obtaining at least one expected signal strength for said at least one significant base station antenna; determining at least one adjusted RTD value for said at least one significant base station antenna based, at least in part, on said at least one expected signal strength, at least one RTD measurement corresponding to said at least one significant base station antenna, and at least one RSS measurement corresponding to said at least one significant base station antenna; and using said at least one adjusted RTD value to estimate a location of said mobile station.