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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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 3G | 20/09/2009 | ISLD-200909-007 | MOTOROLA INC | No | Family Member | ||||
| 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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| 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| US6313787B1 | 3G | 20/09/2009 | ISLD-200909-007 | MOTOROLA INC |
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No | Family Member | |||
| US6313787B1 | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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Yes | Basis Patent | |||
| US6313787B1 | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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No | Family Member | |||
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| GB2358976B | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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Yes | Basis Patent | |||
| GB2358976B | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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No | Family Member | |||
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| CA2325231A1 | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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Yes | Basis Patent | |||
| CA2325231A1 | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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No | Family Member | |||
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| ES2179755A1 | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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Yes | Basis Patent | |||
| ES2179755A1 | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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No | Family Member | |||
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Yes | Basis Patent | |||
| ES2179755B1 | 3G | 16/12/2010 | ISLD-201101-008 | MOTOROLA INC |
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No | Family Member | |||
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No | Family Member | |||
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Yes | Basis Patent | |||
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No | Family Member | |||
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Yes | Basis Patent | |||
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No | Family Member | |||
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Yes | Basis Patent | |||
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No | Family Member | |||
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Yes | Basis Patent | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
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Claim
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