Global Navigation Satellite System

• US 20080183384A1
• Filed: 07/19/2007
• Published: 07/31/2008
• Est. Priority Date: 01/05/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Fischer, Sven, Gaal, Peter, Edge, Stephen W.
• Granted Patent: US 7,893,869 B2
• Time in Patent Office: Days
• US Class Current: 701/213
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 19/25 involving aiding data received from a cooperating element, e.g. assisted GPS
• CPC Class Codes: G01S 19/46 the supplementary measurement being of a radio-wave signal type

Abstract

Each of a first and a second navigation satellite system (NSS) are adapted to operate according to a first and a second specification, respectively, and each includes a first and a second plurality of satellite vehicles (SV), respectively. Each of the first and the second plurality of SVs are adapted to be identified by a first and a second plurality of unique corresponding identifications (IDs), respectively. A processor is adapted to receive and identify a first plurality of corresponding signals transmitted from the first plurality of SVs in response to the first plurality of unique corresponding IDs. The processor is adapted to receive and identify a second plurality of corresponding signals transmitted from the second plurality of SVs in response to the second plurality of unique corresponding IDs. The processor is adapted to determine position location information in response to receiving and identifying the first plurality of corresponding signals and the second plurality of corresponding signals.

Claims

1. A method of communication between a location server and a mobile station, comprising:

transmitting a measure position request message from the location server to the mobile station, wherein the measure position request message comprises;

(a) first method information representing positioning methods for a first navigation satellite system (NSS);

(b) second method information representing positioning methods for a second NSS and corresponding to the positioning methods for the first NSS;

(c) first assistance information representing assistance data for the first NSS; and

(d) second assistance information representing assistance data for the second NSS and corresponding to the assistance data for the first NSS.

2. The method of claim 1, wherein each of the first assistance information representing assistance data for the first NSS and the second assistance information representing assistance data for the second NSS, further comprises at least one of the following elements:

a differential correction, a navigation model, an almanac, acquisition assistance, or real-time integrity information.

3. The method of claim 1, wherein each of the first assistance information representing assistance data for the first NSS and the second assistance information representing assistance data for the second NSS, further comprises a GPS-Galileo time offset (GGTO).

4. The method of claim 3, wherein the GGTO is included in the first assistance information and the second assistance information in response to the location server maintaining a Galileo system time distinct from a GPS system time.

5. The method of claim 1, wherein the first method information representing positioning methods for the first NSS comprises positioning methods of a global position satellite (GPS) system, and wherein the second method information representing positioning methods for the second NSS comprises positioning methods of a Galileo satellite system.

6. The method of claim 1, further comprising the step of:

calculating a time offset representing a conversion from time dependent assistance data for the first NSS to time dependent assistance data for the second NSS.

7. A method of communication between a mobile station and a location server, comprising:

transmitting a measure position response message from the mobile station to the location server, wherein the measure position response message comprises;

(a) first measurement information representing measurement information for a first navigation satellite system (NSS); and

(b) second measurement information representing measurement information for the second NSS and corresponding to the first measurement information for the first NSS.

8. The method of claim 7, wherein each of the first measurement information representing measurement information for the first NSS and the second measurement information representing measurement information for the second NSS, further comprises at least one of the following elements:

a frame number, a global positioning satellite (GPS) time of week (TOW), or at least one of a plurality of measurement parameters.

9. The method of claim 8, wherein the at least one of a plurality of measurement parameters comprises:

an SV ID, a C/N_o measurement, a Doppler measurement, a code phase measurement, a multi-path indicator, and a RMS pseudo-range error measurement.

10. The method of claim 7, wherein the first measurement information representing measurement information for the first NSS comprises measurement information from a global position satellite (GPS) system, and wherein the second measurement information representing measurement information for the second NSS comprises measurement information from a Galileo satellite system.

11. A location server comprising:

means for receiving a first signal from a first SV and a second signal from a second SV, wherein the first SV comprises a first navigation satellite system (NSS) defining a first set of positioning methods and the second SV comprises a second NSS defining a second set of positioning methods;

a processor connected to the means for receiving the first and second signals, the processor adapted to formulate a measure position request message in response to the first set of positioning methods and the second set of positioning methods; and

means for transmitting the measure position request message to a mobile station, wherein the measure position request message comprises;

first method information representing positioning methods for the first NSS;

second method information representing positioning methods for the second NSS and corresponding to the positioning methods for the first NSS;

first assistance information representing assistance data for the first NSS; and

second assistance information representing assistance data for the second NSS and corresponding to the assistance data for the first NSS.

12. The location server of claim 11, wherein each of the first assistance information representing assistance data for the first NSS and the second assistance information representing assistance data for the second NSS, further comprises at least one of the following elements:

a differential correction, a navigation model, an almanac, acquisition assistance, or real-time integrity information.

13. The location server of claim 11, wherein each of the first assistance information representing assistance data for the first NSS and the second assistance information representing assistance data for the second NSS, further comprises a GPS-Galileo time offset (GGTO).

14. The location server of claim 13, wherein the GGTO is included in the first assistance information and the second assistance information in response to the location server maintaining a Galileo system time distinct from a GPS system time.

15. The location server of claim 11, wherein the first method information representing positioning methods for the first NSS comprises positioning methods of a global position satellite (GPS) system, and wherein the second method information representing positioning methods for the second NSS comprises positioning methods of a Galileo satellite system.

16. The location server of claim 11, wherein the processor is further adapted to calculate a time offset representing a conversion from time dependent assistance data for the first NSS to time dependent assistance data for the second NSS.

17. A mobile station, comprising:

means for receiving a first signal from a first SV and a second signal from a second SV, wherein the first SV comprises a first navigation satellite system (NSS) defining a first set of positioning methods and the second SV comprises a second NSS defining a second set of positioning methods;

a processor connected to the means for receiving the first and second signals, the processor adapted to formulate a measure position response message in response to the first signal and the second signal; and

means for transmitting the measure position response message to a location server, wherein the measure position response message comprises;

first measurement information representing measurement information for the first NSS; and

second measurement information representing measurement information for the second NSS and corresponding to the measurement information for the first NSS.

18. The mobile station of claim 17, wherein each of the first measurement information representing measurement information for the first NSS and the second measurement information representing measurement information for the second NSS, further comprise at least one of the following elements:

a frame number, a global positioning satellite (GPS) time of week (TOW), or at least one of a plurality of measurement parameters.

19. The mobile station of claim 18, wherein the at least one of a plurality of measurement parameters comprises:

an SV ID, a C/N_o measurement, a Doppler measurement, a code phase measurement, a multi-path indicator, and a RMS pseudo-range error measurement.

20. The mobile station of claim 17, wherein the first measurement information representing measurement information for the first NSS comprises measurement information from a global position satellite (GPS) system, and wherein the second measurement information representing measurement information for the second NSS comprises measurement information from a Galileo satellite system.

21. A computer program product, comprising:

a computer-readable medium comprising;

code to cause at least a location server to compile a measure position request message, wherein the measure position request message comprises first method information representing positioning methods for a first navigation satellite system (NSS);

second method information representing positioning methods for a second NSS and corresponding to the positioning methods for the first NSS;

first assistance information representing assistance data for the first NSS; and

second assistance information representing assistance data for the second NSS and corresponding to the assistance data for the first NSS; and

code to cause at least the location server to transmit the measure position request message to a mobile station.

22. The product of claim 21, wherein each of the first assistance information representing assistance data for the first NSS and the second assistance information representing assistance data for the second NSS, further comprises at least one of the following elements:

a differential correction, a navigation model, an almanac, acquisition assistance, or real-time integrity information.

23. The product of claim 21, wherein each of the first assistance information representing assistance data for the first NSS and the second assistance information representing assistance data for the second NSS, further comprises a GPS-Galileo time offset (GGTO).

24. The product of claim 23, wherein the GGTO is included in the first assistance information and the second assistance information in response to the location server maintaining a Galileo system time distinct from a GPS system time.

25. The product of claim 21, wherein the first method information representing positioning methods for the first NSS comprises positioning methods of a global position satellite (GPS) system, and wherein the second method information representing positioning methods for the second NSS comprises positioning methods of a Galileo satellite system.

26. The product of claim 21, wherein the computer-readable medium further comprises code for causing at least the location server to calculate a time offset representing a conversion from time dependent assistance data for the first NSS to time dependent assistance data for the second NSS.

27. A computer program product, comprising:

a computer-readable medium comprising;

code to cause at least a mobile station to compile a measure position response message, wherein the measure position response message comprises first measurement information representing measurement information for a first navigation satellite system (NSS); and

second measurement information representing measurement information for the second NSS and corresponding to the first measurement information for the first NSS; and

code to cause at least the mobile station to transmit the measure position response message to a location server.

28. The product of claim 27, wherein each of the first measurement information representing measurement information for the first NSS and the second measurement information representing measurement information for the second NSS, further comprise at least one of the following elements:

a frame number, a global positioning satellite (GPS) time of week (TOW), or at least one of a plurality of measurement parameters.

29. The product of claim 28, wherein the at least one of a plurality of measurement parameters comprises:

an SV ID, a C/N_o measurement, a Doppler measurement, a code phase measurement, a multi-path indicator, and a RMS pseudo-range error measurement.

30. The product of claim 27, wherein the first measurement information representing measurement information for the first NSS comprises measurement information from a global position satellite (GPS) system, and wherein the second measurement information representing measurement information for the second NSS comprises measurement information from a Galileo satellite system.