Patent ID: 7868826
Filing Date: 2011-01-11
Classification: G01S

Abstract:
1. A method of correcting for a location difference between an actual location of a base station antenna and a listed location of said base station antenna, said method comprising: (a) measuring a wireless signal transmitted from a base station antenna and received at a measurement point in a receiving area to obtain a signal measurement; (b) obtaining a first location estimate of said measurement point by a first positioning method that uses said signal measurement and said listed location; (c) obtaining a second location estimation of said measurement point by a second positioning method, wherein said second location estimate is more accurate than said first location estimate; (d) calculating a correction value based, at least in part, on said first and second location estimates such that said correction value corrects for said location difference; performing steps (a) through (d) for a plurality of different measurement points in said receiving area to obtain a plurality of correction values; and averaging said plurality of correction values to obtain a directional forward link calibration (FLC) value that is specific for wireless signals that propagate from said base station antenna toward said receiving area.