Tdoa/gps hybrid wireless location system

Details Tdoa/gps hybrid wireless location system Tdoa/gps hybrid wireless location system

H - Electricity

04

W

H04W 64/00 (2009.01)

Patent

CA 2548669

A method and system for enhancing the accuracy and robustness of locations determined for a mobile wireless transceiver (MS) in a cellular telephone communications system integrates location-related information both from an assisted GPS device embedded in the mobile unit and from infrastructure-based facilities that extract signal characteristic data at networked base stations (105). Available supporting collateral information may be additionally evaluated in the location determination to provide location estimates of enhanced robustness and accuracy.

L'invention concerne un procédé et un système qui permettent d'améliorer la précision et la robustesse d'emplacements déterminés pour un émetteur-récepteur mobile sans fil dans un système de communication par téléphone cellulaire. Ce procédé et ce système intègrent des informations concernant les emplacements provenant d'un dispositif GPS assisté intégré à l'unité mobile et d'installations basées sur une infrastructure qui extraient des données de caractéristique de signal au niveau des stations de base. Des informations collatérales de support disponibles peuvent également être évaluées dans les déterminations d'emplacements afin de fournir des estimations d'emplacements à robustesse et à précision améliorées.

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