Method and system for providing location updates

• US 7,489,939 B2
• Filed: 04/04/2006
• Issued: 02/10/2009
• Est. Priority Date: 04/13/2005
• Status: Active Grant

• Current Assignee: WirelessWERX IP LLC (Pueblo Nuevo LLC)
• Original Assignee: Wirelesswerx International, Inc.
• Inventors: Ashley, James Jr., Mooney, Patrick, Mooney, Frank
• Primary Examiner(s): Le; Danh C
• Application Number:
  US11/278,665
• Publication Number:
  US 20060233318A1
• Time in Patent Office: 1,043 Days
• Field of Search: 455/456.5, 455/456.6, 455/456.1, 701/201, 340/994
• US Class Current: 455/456.6
• CPC Class Codes: G01S 19/17 Emergency applications
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 76/50 for emergency connections
• CPC Class Codes: H04W 8/12 between location registers or mobility servers

Abstract

A method and system of updating location information of a portable computing device is disclosed. Location data is received from a positioning device. A voice link is utilized for communication between the portable computing device and a call center. A dual-tone multi-frequency signal is mapped to a pre-determined range of movement. The dual-tone multi-frequency signal is transmitted to the call center when a longitude measurement in the location data indicates a change in longitude that is within the pre-determined rage of movement. The dual-tone multi-frequency signal is transmitted as an indicator of longitude change of location of the portable computing device. In addition, the dual-tone multi-frequency signal is transmitted to the call center when a latitude measurement in the location data indicates a change in latitude that is within the pre-determined rage of movement. The dual-tone multi-frequency signal is transmitted as an indicator of latitude change of location of the portable computing device.

Claims

1. A method of updating location information of a portable computing device, comprising:

receiving location data from a positioning device;

communicating with a call center through a voice link;

mapping a dual-tone multi-frequency signal to a pre-determined range of movement;

transmitting to the call center the dual-tone multi-frequency signal when a longitude measurement in the location data indicates a change in longitude that is within the pre-determined range of movement, wherein the dual-tone multi-frequency signal is transmitted as an indicator of longitude change of location of the portable computing device; and

transmitting to the call center the dual-tone multi-frequency signal when a latitude measurement in the location data indicates a change in latitude that is within the pre-determined range of movement, wherein the dual-tone multi-frequency signal is transmitted as an indicator of latitude change of location of the portable computing device.

2. The method of claim 1, wherein the dual-tone multi-frequency signal is transmitted through the voice link.

3. The method of claim 1, wherein the positioning device is a ground positioning system device.

4. The method of claim 1, wherein the call center is public safety answering point.

5. The method of claim 1, wherein the portable computing device is a personal data assistant, a cellular telephone, a smart phone, or a laptop computer.

6. The method of claim 1, wherein the pre-determined range of movement is 0 degrees to 0.0045 degrees.

7. The method of claim 1, wherein the pre-determined range of movement is 0.0046 degrees to 0.0090 degrees.

8. The method of claim 1, wherein the call center calculates a new location latitude of the portable computing device by adding an old location latitude of the portable computing device and the pre-determined range of movement corresponding to the dual-tone multi-frequency signal received.

9. The method of claim 1, wherein the call center calculates a new location longitude of the portable computing device by adding an old location longitude of the portable computing device and the division of the pre-determined range of movement corresponding to the dual-tone multi-frequency signal received by the cosine of the old location longitude.

10. A portable computing device, comprising:

a positioning device that receives location data;

a memory module that stores a table that includes a dual-tone multi-frequency signal mapped to a pre-determined range of movement;

a voice communication transceiver that communicates with a call center through a voice link; and

a processor configured to determine when a longitude measurement in the location data indicates a change in longitude that is within the pre-determined range of movement, wherein the processor is further configured to transmit the dual-tone multi-frequency signal to the call center through the voice communication transceiver, the dual-tone multi-frequency signal being transmitted as an indicator of longitude change of location of the portable computing device, the processor being configured to determine when a latitude measurement in the location data indicates a change in latitude that is within the pre-determined range of movement, wherein the processor is further configured to transmit the dual-tone multi-frequency signal to the call center through the voice communication transceiver, the dual-tone multi-frequency signal being transmitted as an indicator of latitude change of location of the portable computing device.

11. The portable computing device of claim 10, wherein the dual-tone multi-frequency signal is transmitted through the voice link.

12. The portable computing device of claim 10, wherein the positioning device is a ground positioning system device.

13. The portable computing device of claim 10, wherein the call center is public safety answering point.

14. The portable computing device of claim 10, wherein the portable computing device is a personal data assistant, a cellular telephone, a smart phone, or a laptop computer.

15. The portable computing device of claim 10, wherein the pre-determined range of movement is 0 degrees to 0.0045 degrees.

16. The portable computing device of claim 10, wherein the pre-determined range of movement is 0.0046 degrees to 0.0090 degrees.

17. The portable computing device of claim 10, wherein the call center calculates a new location latitude of the portable computing device by adding an old location latitude of the portable computing device and the pre-determined range of movement corresponding to the dual-tone multi-frequency signal received.

18. The portable computing device of claim 10, wherein the call center calculates a new location longitude of the portable computing device by adding an old location longitude of the portable computing device and the division of the pre-determined range of movement corresponding to the dual-tone multi-frequency signal received by the cosine of the old location longitude.

19. A method of updating location information of a portable computing device, comprising:

receiving location data from a positioning device;

communicating with a call center through a data link;

mapping a movement indicator to a pre-determined range of movement;

transmitting to the call center the movement indicator in a first data packet when a longitude measurement in the location data indicates a change in longitude that is within the pre-determined range of movement, wherein the movement indicator indicates a longitude change of location of the portable computing device; and

transmitting to the call center the movement indicator in a second data packet when a latitude measurement in the location data indicates a change in latitude that is within the pre-determined range of movement, wherein the movement indicator indicates a latitude change of location of the portable computing device.

20. The method of claim 19, wherein the movement indicator is transmitted through the data link.

21. The method of claim 19, wherein the positioning device is a ground positioning system device.

22. The method of claim 19, wherein the call center is public safety answering point.

23. The method of claim 19, wherein the portable computing device is a personal data assistant, a cellular telephone, a smart phone, or a laptop computer.

24. The method of claim 19, wherein the pre-determined range of movement is 0 degrees to 0.0045 degrees.

25. The method of claim 19, wherein the pre-determined range of movement is 0.0046 degrees to 0.0090 degrees.

26. The method of claim 19, wherein the call center calculates a new location latitude of the portable computing device by adding an old location latitude of the portable computing device and the pre-determined range of movement corresponding to the movement indicator received.

27. The method of claim 19, wherein the call center calculates a new location longitude of the portable computing device by adding an old location longitude of the portable computing device and the division of the pre-determined range of movement corresponding to the movement indicator received by the cosine of the old location longitude.