Patent ID: 9173058
Filing Date: 2015-10-27
Classification: G01S,H04W

Abstract:
1. A method for estimating a location of a subscriber station receiving a first signal from a first base station and receiving a second signal from a second base station where the first and second base stations are nodes in a WiMAX or LTE network, the method comprising: (a) receiving from said subscriber station a message containing a first information and a second information; (b) determining a range ring from said first base station using said first information; (c) determining a location hyperbola using said second information wherein said location hyperbola has said first and said second base stations as foci; and (d) estimating a location of said subscriber station using said range ring and said location hyperbola together, wherein the step of estimating a location of said subscriber station includes: (i) determining a serving sector of said first base station for said subscriber station; and (ii) if said range ring and said location hyperbola intersect plural times within said serving sector: