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公开(公告)号：JP2001208825A
公开(公告)日：2001-08-03
申请号：JP2000343675
申请日：2000-11-10
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORG J , ZHAO YILIN , HART ROGER C
Abstract: PROBLEM TO BE SOLVED: To provide an improved method and device for assisting position specifying in a radio communication system. SOLUTION: This is a cellular network protocol for minimizing a data flow required between a cellular infrastructure for supporting a GPS-based position determining function and each mobile hand set. Four concrete novel technology are introduced to minimize the number of bits required to be transmitted to the respective hand sets. Those are a method for reducing or eliminating a requisite as to a GPS ephemeris update for the each mobile station, a method for compressing a difference correcting broadcast message, a method for controlling a speed for updating an ephemeris of the each hand set by the network based on an ephemeris date limit, and a method utilized for determining, by the each mobile station, that the ephemeris update is required, based on precision prediction and a threshold value peculiar to the each mobile station, when the update is required.
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公开(公告)号：GB2358976A
公开(公告)日：2001-08-08
申请号：GB0027434
申请日：2000-11-09
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORGE J , ZHAO YILIN , HART ROGER C
Abstract: In a mobile radio communication system, a method for locating handset 104 comprises receiving initial GPS ephemeris data, clock correction data and differential GPS (DGPS) correction data from a reference receiver 118 and base station controller 110, and determining whether the GPS ephemeris data for one or more of the plurality of GPS satellites 120 requires update. If so, a request for updated GPS ephemeris data is made and received from the base station, possibly through a cellular network and transmission 101, and the location of the mobile handset 104 is determined using the initial GPS ephemeris data, the clock correction data, the DGPS correction data, and the updated GPS ephemeris data. The judgement as to whether the ephemeris data requires updating may involve estimating the likely accuracy of the computed location based on the initial ephemeris data, or determining whether the age of the ephemeris data has exceeded a predetermined age limit.
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公开(公告)号：DE10054764A1
公开(公告)日：2001-06-28
申请号：DE10054764
申请日：2000-11-04
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORG J , ZHAO YILIN , HART ROGER C
IPC: G01C21/00 , G01S1/00 , G01S5/00 , G01S5/14 , G01S19/27 , H04Q7/34 , H04Q7/38 , G01S5/02 , H04B7/26
Abstract: Ephemeris message having GPS ephemeris data for multiple of GPS satellites and clock correction data, is received and differential correction data is also received. GPS ephemeris data for satellites requiring update is detected. Update message with updated GPS ephemeris data is received. Location of handset is detected in response to GPS ephemeris data, clock and correction data and updated GPS ephemeris data.
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公开(公告)号：IT1316006B1
公开(公告)日：2003-03-26
申请号：ITRM20000586
申请日：2000-11-10
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORGE J , ZHAO YILIN , HART ROGER C
Abstract: A cellular network protocol which minimizes the required data flow between the cellular infrastructure and each mobile handset supporting a GPS based positioning capability is taught. Four specific innovations are introduced which together minimize the number of bits required to be transferred to each handset: a method for reducing or removing the requirement for GPS ephemeris updates to each mobile; a method for compression of the differential correction broadcast message; a method for controlling the rate at which the network updates each handset's ephemeris based on an ephemeris age limit; and, finally, a method which each mobile can use to determine when an ephemeris update is needed, based on an accuracy prediction and a threshold which is unique to each mobile.
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公开(公告)号：ES2179755B1
公开(公告)日：2004-09-16
申请号：ES200002697
申请日：2000-11-08
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORGE J , ZHAO YILIN , HART ROGER C
Abstract: A cellular network protocol which minimizes the required data flow between the cellular infrastructure and each mobile handset supporting a GPS based positioning capability is taught. Four specific innovations are introduced which together minimize the number of bits required to be transferred to each handset: a method for reducing or removing the requirement for GPS ephemeris updates to each mobile; a method for compression of the differential correction broadcast message; a method for controlling the rate at which the network updates each handset's ephemeris based on an ephemeris age limit; and, finally, a method which each mobile can use to determine when an ephemeris update is needed, based on an accuracy prediction and a threshold which is unique to each mobile.
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Patent Agency Ranking
公开(公告)号：AU756506B2
公开(公告)日：2003-01-16
申请号：AU7154900
申请日：2000-11-10
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORGE J , ZHAO YILIN , HART ROGER C
Abstract: A cellular network protocol which minimizes the required data flow between the cellular infrastructure and each mobile handset supporting a GPS based positioning capability is taught. Four specific innovations are introduced which together minimize the number of bits required to be transferred to each handset: a method for reducing or removing the requirement for GPS ephemeris updates to each mobile; a method for compression of the differential correction broadcast message; a method for controlling the rate at which the network updates each handset's ephemeris based on an ephemeris age limit; and, finally, a method which each mobile can use to determine when an ephemeris update is needed, based on an accuracy prediction and a threshold which is unique to each mobile.
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公开(公告)号：GB2358976B
公开(公告)日：2002-09-18
申请号：GB0027434
申请日：2000-11-09
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORGE J , ZHAO YILIN , HART ROGER C
Abstract: A cellular network protocol which minimizes the required data flow between the cellular infrastructure and each mobile handset supporting a GPS based positioning capability is taught. Four specific innovations are introduced which together minimize the number of bits required to be transferred to each handset: a method for reducing or removing the requirement for GPS ephemeris updates to each mobile; a method for compression of the differential correction broadcast message; a method for controlling the rate at which the network updates each handset's ephemeris based on an ephemeris age limit; and, finally, a method which each mobile can use to determine when an ephemeris update is needed, based on an accuracy prediction and a threshold which is unique to each mobile.
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公开(公告)号：ES2179755A1
公开(公告)日：2003-01-16
申请号：ES200002697
申请日：2000-11-08
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORGE J , ZHAO YILIN , HART ROGER C
Abstract: Método y aparato para protocolo del Sistema de Posicionamiento Global (GPS) Asistido que minimiza el flujo de datos requerido entre la infraestructura celular v cada teléfono móvil que soporta capacidad de posicionamiento basada en GPS. Comprende cuatro innovaciones específicas: un método para reducir o eliminar la necesidad de actualizaciones de efemérides de GPS a cada móvil; un método para la compresión del mensaje de difusión de corrección diferencial; un método para controlar la velocidad a la cual la red actualiza las efemérides de cada teléfono tomando como base un límite de edad de las efemérides; y, finalmente; un método que puede utilizar cada móvil para determinar cuándo es necesario actualizar una efeméride, tomando como base una predicción de exactitud y un umbral que es exclusivo a cada móvil.
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公开(公告)号：ITRM20000586A1
公开(公告)日：2001-05-14
申请号：ITRM20000586
申请日：2000-11-10
Applicant: MOTOROLA INC
Inventor： KING THOMAS M , GEIER GEORGE J , ZHAO YILIN , HART ROGER C
Abstract: A cellular network protocol which minimizes the required data flow between the cellular infrastructure and each mobile handset supporting a GPS based positioning capability is taught. Four specific innovations are introduced which together minimize the number of bits required to be transferred to each handset: a method for reducing or removing the requirement for GPS ephemeris updates to each mobile; a method for compression of the differential correction broadcast message; a method for controlling the rate at which the network updates each handset's ephemeris based on an ephemeris age limit; and, finally, a method which each mobile can use to determine when an ephemeris update is needed, based on an accuracy prediction and a threshold which is unique to each mobile.
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公开(公告)号：CA2325231A1
公开(公告)日：2001-05-12
申请号：CA2325231
申请日：2000-11-07
Applicant: MOTOROLA INC
Inventor： ZHAO YILIN , HART ROGER C , GEIER GEORGE J , KING THOMAS M
Abstract: A cellular network protocol which minimizes the required data flow between the cellular infrastructure and each mobile handset supporting a GPS based positioning capability is taught. Four specific innovations are introduced which together minimize the number of bits required to be transferred to each handset: a method for reducing or removing the requirement for GPS ephemeris updates to each mobile; a method for compression of the differential correction broadcast message; a method for controlling the rate at which the network updates each handset's ephemeris based on an ephemeris age limit; and, finally, a method which each mobile can use to determine when an ephemeris update is needed, based on an accuracy prediction and a threshold which is unique to each mobile.
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