METHOD AND SYSTEM FOR GNSS ASSISTANCE DATA OR LTO DATA DOWNLOAD OVER A BROADCAST BAND

• US 20100220004A1
• Filed: 02/27/2009
• Published: 09/02/2010
• Est. Priority Date: 02/27/2009
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Malkos, Steven, Lane, Christopher
• Granted Patent: US 8,823,586 B2
• Time in Patent Office: Days
• US Class Current: 342/357.620
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 19/35 Constructional details or hardware or software details of the signal processing chain
• CPC Class Codes: G01S 19/39 the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO

Abstract

A combined GNSS and FM receiver receives FM signals comprising satellite navigation data from an AGNSS server. Associated navigation information such as a position fix is determined based on the received satellite navigation data. The received satellite navigation data are GNSS assistance data or LTO data. The AGNSS server generates the satellite navigation data by acquiring GNSS data from a satellite reference network. The acquired GNSS data comprise, for example, GPS data, GLONASS data and/or GALILEO data. The generated satellite navigation data are broadcasted as FM signals through RDS and/or RBDS to the combined GNSS and FM receiver. The combined GNSS and FM receiver receives updated satellite navigation data in subsequent FM signals, periodically or aperiodically, and updates associated navigation information, accordingly. The combined GNSS and FM receiver decodes the received FM radio signals for the updated satellite navigation data generated at the AGNSS server before being transmitted.

Claims

1. A method for processing signals, the method comprising:

receiving, from a FM radio base station, broadcast FM radio signals comprising satellite navigation data, wherein said satellite navigation data is acquired by said FM radio base station from an assisted global navigation satellite systems (AGNSS) server; and

determining navigation information based on said satellite navigation data received via said broadcast FM radio signals.

2. The method according to claim 1, wherein said satellite navigation data received via said broadcast FM radio signals comprise assisted GNSS data and long term orbit (LTO) data.

3. The method according to claim 1, wherein said satellite navigation data comprise GPS data, GLONASS data and/or GALILEO data.

4. The method according to claim 1, comprising receiving said satellite navigation data via said broadcast FM radio signals through one of, radio data system (RDS) and radio broadcast data system (RBDS).

5. The method according to claim 1, comprising receiving updated satellite navigation data via subsequently received broadcast FM radio signals.

6. The method according to claim 5, comprising updating said navigation information based on said received updated satellite navigation data.

7. The method according to claim 5, wherein said updating of said navigation information occurs periodically or aperiodically.

8. The method according to claim 1, comprising determining subsequent navigation information based on said received broadcast FM radio signals comprising said satellite navigation data.

9. The method according to claim 1, comprising decoding said received broadcast FM radio signals comprising satellite navigation data.

10. The method according to claim 1, wherein said satellite navigation data is generated by said AGNSS server prior to being transmitted as said broadcast FM radio signals.

11. A system for processing signals, the system comprising:

one or more circuits for use in a communication device, wherein said one or more circuits are operable to receive, from a FM radio base station, broadcast FM radio signals comprising satellite navigation data, wherein said satellite navigation data is acquired by said FM radio base station from an assisted global navigation satellite systems (AGNSS) server; and

said one or more circuits are operable to determine navigation information based on said satellite navigation data received via said broadcast FM radio signals.

12. The system according to claim 11, wherein said satellite navigation data received via said broadcast FM radio signals comprise assisted GNSS data and long term orbit (LTO) data.

13. The system according to claim 11, wherein said satellite navigation data comprise GPS data, GLONASS data and/or GALILEO data.

14. The system according to claim 11, wherein said one or more circuits are operable to receive said satellite navigation data via said broadcast FM radio signals through one of, radio data system (RDS) and radio broadcast data system (RBDS).

15. The system according to claim 11, wherein said one or more circuits are operable to receive updated satellite navigation data via subsequently received broadcast FM radio signals.

16. The system according to claim 15, wherein said one or more circuits operable to update said navigation information based on said received updated satellite navigation data.

17. The system according to claim 15, wherein said updating of said navigation information occurs periodically or aperiodically.

18. The system according to claim 11, wherein said one or more circuits are operable to determine subsequent navigation information based on said received broadcast FM radio signals comprising said satellite navigation data.

19. The system according to claim 11, wherein said one or more circuits are operable to decode said received broadcast FM radio signals comprising satellite navigation data.

20. The system according to claim 11, wherein said satellite navigation data is generated by said AGNSS server prior to being transmitted as said broadcast FM radio signals.