Gps synchronization for wireless communications stations

H - Electricity – 04 – B

Patent

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H04B 7/00 (2006.01)

Patent

CA 2635579

A method and system are specified to determine, provide, and exploit the precise time base relations between the distinct signal timings of the Global Positioning System (GPS) and a wireless communications system (WCS) for which the internal WCS downlink time base standards are not inherently synchronized to GPS timing. These downlink signal synchronization facilities are particularly beneficial for a wireless location system (WLS) and related methods and subsystems that provide mobile-station location determination through the exploitation of the time base synchronization information, e.g., to assist a GPS-equipped mobile station in determining its GPS-derived measurements with enhanced efficiency and accuracy.

L'invention concerne un procédé et un système permettant de déterminer, de fournir et d'exploiter des relations temporelles précises entre les synchronisations de signaux distinctes du système de positionnement mondial (GPS) et d'un système de communications sans fil (WCS) pour lequel les normes temporelles en liaison descendante WCS internes ne sont pas synchronisées de manière inhérente avec la synchronisation GPS. Ces équipement de synchronisation de signaux en liaison descendante s'avèrent particulièrement utiles pour un système de localisation sans fil (WLS) et des procédés et sous-systèmes associés qui permettent de déterminer l'emplacement d'une station mobile par exploitation des informations de synchronisation temporelles, par exemple, pour assister une station mobile équipée d'un GPS lors de la détermination de mesures dérivées du GPS avec une efficacité et une précision améliorées.

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