Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Aeronautical vehicle
Patent
1999-02-12
2000-05-02
Cuchlinski, Jr., William A.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Aeronautical vehicle
701213, 244158R, 342355, 35613901, G06F 770
Patent
active
06058338&
ABSTRACT:
A method and apparatus for efficiently transmitting location assistance information to a mobile communication device over a control channel with a minimal impact on the capacity of the control channel. A position location server provides a difference between satellite locations which have been computed using Almanac data and then Ephemeris data. Sending only the difference between the locations and clock corrections computed using the two different data types, the total amount of information to be transmitted to a mobile communication device is significantly reduced. Furthermore, by providing rate of change information, the method and apparatus allows the location assistance information to remain valid for a relatively long time after it is has been received by the mobile communication device.
REFERENCES:
patent: 5430657 (1995-07-01), Kyrtsos
patent: 5862495 (1999-01-01), Small et al.
Agashe Parag A.
Soliman Samir S.
Vayanos Alkinoos Hector
Cuchlinski Jr. William A.
Greenhaus Bruce W.
Hernandez Olga
Miller R. Ben
Qualcomm Incorporated
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