System and/or method for providing information updates to a location server

• US 9,554,354 B2
• Filed: 01/07/2015
• Issued: 01/24/2017
• Est. Priority Date: 08/01/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sheynblat, Leonid, Heshmati, Ardalan, Gum, Arnold Jason
• Primary Examiner(s): PHUONG, DAI
• Application Number:
  US14/591,667
• Publication Number:
  US 20150119078A1
• Time in Patent Office: 748 Days
• Field of Search: 4554041-4042, 455420-4221, 455/432.1, 4554561-4563, 455/457
• US Class Current: 1/1
• CPC Class Codes: G01S 11/06 using intensity measurements
• CPC Class Codes: G01S 19/09 providing processing capability normally carried out by the receiver
• CPC Class Codes: G01S 19/42 Determining position
• CPC Class Codes: G01S 5/0036 of measured values, i.e. measurement on mobile and position calculation on base station
• CPC Class Codes: G01S 5/14 Determining absolute distances from a plurality of spaced points of known location
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

The subject matter disclosed herein relates to a system and method for acquiring signal received from satellite vehicles (SVs) in a satellite navigation system. In one example, although claimed subject matter is not so limited, information processed in acquiring a signal from a first SV may be used in acquiring a signal from a second SV.

Claims

1. A method comprising, at a mobile device:

measuring distances between a mobile device and a plurality of transmitters based, at least in part, on signals received from said plurality of transmitters at said mobile device;

estimating distances between said mobile device and said plurality of transmitters at a common instance of time, at least in part, by combining a measurement of a distance between said mobile device and at least one of said plurality of transmitters with at least one previous measurement of said distance to provide an estimate of said distance; and

transmitting said estimated distances from said mobile device to a location server.

2. The method of claim 1, wherein said estimating said distances further comprises:

extrapolating said estimate to said common instance of time.

3. The method of claim 1, wherein said combining further comprises estimating said distance substantially according to a Kalman filter.

4. A mobile device comprising:

a transceiver; and

a processor coupled to said transceiver and configured to;

measure distances between a mobile device and a plurality of transmitters based, at least in part, on signals received from said plurality of transmitters via said transceiver;

estimate distances between said mobile device and said plurality of transmitters at a common instance of time, at least in part, by combining a measurement of a distance between said mobile device and at least one of said plurality of transmitters with at least one previous measurement of said distance to provide an estimate of said distance; and

initiate transmission of said estimated distances via said transceiver to a location server.

5. The mobile device of claim 4, said processor being further configured to:

extrapolate said estimate to said common instance of time.

6. The mobile device of claim 4, said processor being further configured to estimate said distance substantially according to a Kalman filter.

7. A mobile device comprising:

means for measuring distances between a mobile device and a plurality of transmitters based, at least in part, on signals received from said plurality of transmitters at said mobile device;

means for estimating distances between said mobile device and said plurality of transmitters at a common instance of time, at least in part, by combining a measurement of a distance between said mobile device and at least one of said plurality of transmitters with at least one previous measurement of said distance to provide an estimate of said distance; and

means for transmitting said estimated distances from said mobile device to a location server.

8. The mobile device of claim 7, and further comprising:

means for extrapolating said estimate to said common instance of time.

9. The mobile device of claim 7, and further comprising:

means for estimating said distance substantially according to a Kalman filter.

10. An article comprising:

a non-transitory computer-readable medium, said non-transitory computer-readable medium comprising machine-readable instructions stored thereon that are executable by one or more processors of a mobile device to;

measure distances between a mobile device and a plurality of transmitters based, at least in part, on signals received from said plurality of transmitters at said mobile device;

estimate distances between said mobile device and said plurality of transmitters at a common instance of time, at least in part, by combining a measurement of a distance between said mobile device and at least one of said plurality of transmitters with at least one previous measurement of said distance to provide an estimate of said distance; and

initiate transmission of said estimated distances from said mobile device to a location server.

11. The article of claim 10, said machine-readable instructions being further executable by said one or more processors of said mobile device to:

extrapolate said estimate to said common instance of time.

12. The article of claim 10, said machine-readable instructions being further executable by said one or more processors of said mobile device to:

estimate said distance substantially according to a Kalman filter.