Satellite positioning system receivers and methods

• US 7,642,958 B2
• Filed: 06/21/2005
• Issued: 01/05/2010
• Est. Priority Date: 06/21/2005
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: De Clerck, William P., Bernhardt, Bruce A., Schellinger, Michael W.
• Primary Examiner(s): Tarcza; Thomas H
• Assistant Examiner(s): LIU, HARRY K
• Application Number:
  US11/158,127
• Publication Number:
  US 20060284765A1
• Time in Patent Office: 1,659 Days
• Field of Search: 701/211, 342/357, 342/357.09, 455/456
• US Class Current: 342/357.31
• CPC Class Codes: G01S 19/254 relating to Doppler shift of satellite signals
• CPC Class Codes: G01S 19/256 relating to timing, e.g. time of week, code phase, timing offset
• CPC Class Codes: G01S 19/258 relating to the satellite constellation, e.g. almanac, ephemeris data, lists of satellites in view
• CPC Class Codes: G01S 19/34 Power consumption

Abstract

A mobile wireless communication device (200) including a wireless transceiver (210) communicably coupled to a processor (220), a satellite positioning system receiver (250), wherein the processor controls an operating mode of the satellite positioning system receiver based on satellite positioning system operating mode information received by the wireless transceiver when the mobile wireless communication device is in a vicinity of a location or will be in the vicinity on which the satellite positioning system operating mode information is based. Controlling the operating mode includes controller whether and when and the frequency with which location measurements are made.

Claims

1. A method in a satellite positioning system receiver enabled mobile wireless communication device, the method comprising:

transmitting location information from the wireless communication device;

receiving satellite positioning system operating mode information at the wireless communication device, the satellite positioning system operating mode information based on the location information transmitted from the wireless communication device;

controlling the operating mode of the satellite positioning system receiver based on the satellite positioning system operating mode information.

2. The method of claim 1, controlling the operating mode of the satellite positioning system receiver includes balancing requirements for position information and power consumption.

3. The method of claim 1, controlling the operating mode of the satellite positioning system receiver includes balancing requirements for position information and power consumption based on a particular location of the mobile wireless communication device or a particular time.

4. The method of claim 1, controlling the operating mode of the satellite positioning system receiver includes controlling consumption of power by the satellite positioning system receiver.

5. The method of claim 1, controlling the operating mode of the satellite positioning system receiver includes controlling generating of pseudorange measurements by the satellite positioning system receiver.

6. The method of claim 1, controlling the operating mode of the satellite positioning system receiver includes controlling an accuracy with which the satellite positioning system receiver computes position.

7. The method of claim 1, receiving the satellite positioning system operating mode information at a wireless radio receiver of the wireless communication device.

8. The method of claim 1,

receiving satellite positioning system operating mode information includes receiving information indicating a time interval during which the satellite positioning system receiver reduces energy consumption,

reducing energy consumption of the satellite positioning system receiver during the time interval range identified.

9. The method of claim 1,

receiving satellite positioning system operating mode information includes receiving information identifying a geographical range over which the satellite positioning system receiver may reduce energy consumption,

reducing energy consumption of the satellite positioning system receiver when the mobile wireless communication device traverses the geographical range identified.

10. A mobile wireless communication device comprising:

a processor;

a wireless transceiver communicably coupled to the processor, the wireless transceiver capable of receiving satellite positioning system operating mode information based on location information of the wireless communication device;

a satellite positioning system receiver coupled to the processor,

the processor controlling an operating mode of the satellite positioning system receiver based on satellite positioning system operating mode information received by the wireless transceiver when the mobile wireless communication device is in a vicinity of a location on which the location information of the wireless communication device is based.

11. The device of claim 10 is a battery powered mobile wireless communication device including a battery coupled to the controller.

12. The device of claim 10, the processor controlling the operating mode of the satellite positioning system receiver by balancing requirements for position information generated by the satellite positioning system receiver and power consumption of the satellite positioning system receiver.

13. The device of claim 10, the processor controlling the operating mode of the satellite positioning system receiver by balancing requirements for position information and power consumption based on a particular location of the mobile wireless communication device or a particular time.

14. The device of claim 10, the processor controlling the operating mode of the satellite positioning system receiver by controlling power consumption by the satellite positioning system receiver.

15. The device of claim 10, the processor controlling the operating mode of the satellite positioning system receiver by controlling a rate at which the satellite positioning system receiver obtains pseudorange measurements or a number of pseudorange measurements obtained by the satellite positioning system receiver for a particular position computation.

16. The device of claim 10, the processor controlling the operating mode of the satellite positioning system receiver by controlling an accuracy with which the satellite positioning system receiver computes position.

17. The device of claim 10, the processor controlling an operating mode of the satellite positioning system receiver by reducing energy consumption of the satellite positioning system receiver when the mobile wireless communication device traverses a geographical range identified in the received satellite positioning system operating mode information.

18. A mobile wireless communication device comprising:

a processor;

a wireless transceiver communicably coupled to the processor,

the wireless communication device configured to operate in a positioning measurement operating mode wherein the wireless communication device obtains positioning measurements from distant entities,

the wireless transceiver configured to receive positioning system operating mode information based on a location of the wireless communication device;

the processor controlling the positioning measurement operating mode of the wireless communication device based on positioning system operating mode information received by the wireless transceiver.

19. A mobile wireless communication device comprising:

a processor;

memory coupled to the processor, the memory storing location based satellite positioning system operating mode information;

a position determination entity coupled to the processor, the position determination entity capable of determining a position of the mobile wireless communication device,

the processor controlling an operating mode of the position determination entity based on satellite positioning system operating mode information stored in memory and based on a location of the mobile wireless communication device.

20. The device of claim 19, the position determination entity is one of a satellite positioning system receiver and a wireless transceiver.