METHOD FOR POSITIONING BY WI-FI SIGNALS
First Claim
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 position information for the access points based on their respective identifiers;
estimating position information of the terminal based at least in part on the geographical position 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;
from a second database (SIG), topographical information corresponding to a zone around the estimated position, or the estimated positioning zone; and
estimating the position of the terminal based on the retrieved topographical information.
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Abstract
A method for positioning a terminal using signals received from a plurality of access points of at least one wireless telecommunications network is disclosed. According to some aspects, the terminal first retrieves identifiers of the access points from the received signals, then searches in a first database (BDP) for respective geographical position information for the access points. A first estimation of a position of the terminal or a positioning zone of the terminal is obtained from geographical position information of the access points, then topographical information corresponding to the first estimation of the position or the positioning zone is retrieved from a second database (SIG). A second estimation of the position of the terminal is performed using the topographical information thus obtained.
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Citations
20 Claims
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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:
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retrieving identifiers of the access points from the received signals; searching in a first database (BDP) for geographical position information for the access points based on their respective identifiers; estimating position information of the terminal based at least in part on the geographical position 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; from a second database (SIG), topographical information corresponding to a zone around the estimated position, or the estimated positioning zone; and estimating the position of the terminal based on the retrieved topographical information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification