Orange

Shinya Tsutsumi

Wladimir Bocquet

Tomofumi Yabu

A method and system are provided for estimating the location of a mobile radio-communication terminal, the mobile terminal having a plurality of antennas, and being in communication range of at least one transmitter having a plurality of antennas, the method comprising; measuring the time of arrival of a signal transmitted from the M antennas of the at least one transmitter at each of the N antennas of the mobile terminal to determine M&#xd7;N range measurements corresponding to the M&#xd7;N transmission paths of said signal between the M antennas of the transmitter and the N antennas of the mobile terminal; and estimating the location of the mobile terminal based on the M&#xd7;N range measurements. The location of the mobile terminal may be estimated by applying a least squares method.

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Hannan, Japan

Shinya Tsutsumi