Patent ID: 8983489
Filing Date: 2015-03-17
Classification: G01S

Abstract:
1. A method for positioning a terminal using signals received from a plurality of access points of at least one wireless telecommunications network, the method comprising: retrieving identifiers of the access points from the received signals; searching in a first database (BDP) for geographical information for the access points based on their respective identifiers, the geographical information enabling a prediction of power values of the received signals on a meshing of a space; estimating position information of the terminal within the space, based at least in part on the geographical information of the access points, the estimated position information corresponding to an estimated position of the terminal or information regarding an estimated positioning zone in which the terminal is located; retrieving, from a second database (SIG), topographical information corresponding to a zone around the estimated position, or the estimated positioning zone, the second database further defining a space of authorized positions as well as a space of prohibited positions for terminals; and estimating the position of the terminal based on the retrieved topographical information, wherein the positioning method is carried out for a plurality of terminals and further comprises: