Method and apparatus for performing timing synchronization
AssigneeGlobal Locate, Inc.
InventorsDonald L. Fuchs, Charles Abraham, Frank van Diggelen
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Abstract
A method and apparatus for performing timing synchronization in a mobile device. The method and apparatus include a wireless transceiver having a first oscillatory signal generator (OSG) and a Global Position System (GPS) receiver. The GPS receiver includes a second oscillatory signal generator coupled to a counter for receiving a first clock signal from the first OSG and a second clock signal from the second OSG. Additionally, a GPS signal processor is coupled to the counter. The counter provides a relative offset signal between the first and second oscillatory signal generators to the GPS signal processor for adjusting a pseudo-range model.
Claims16
Apparatus for performing timing synchronization in a mobile device, comprising:
- a wireless transceiver having a first oscillatory signal generator (OSG);
- a Global Position System (GPS) receiver comprising:
- a second oscillatory signal generator coupled to a counter for receiving a first clock signal from said first OSG and a second clock signal from said second OSG;
- and
- a GPS signal processor coupled to said counter;
- and
- wherein said counter provides a relative offset signal between said first and second oscillatory signal generators to said GPS signal processor to adjust a pseudo-range model.
A method for performing timing synchronization in a mobile device, comprising:
- synchronizing a first oscillatory signal generator (OSG) with a reference signal from a wireless carrier;
- counting first clock cycles of said first OSG that occur during a plurality of second clock cycles from a second OSG;
- terminating said count in response to attaining a predetermined metric;
- computing a relative offset value between said first OSG and said second OSG;
- and
- modifying a pseudo-range model based on said relative offset value.
Dependencies are inferred from the claim text.