Method and system for determining a location for a RF communication device based on its proximity to a mobile device

• US 8,818,270 B2
• Filed: 08/27/2013
• Issued: 08/26/2014
• Est. Priority Date: 02/12/2010
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Abraham, Charles, Buer, Mark, Garrett, David, Karaoguz, Jeyhan, Lundgren, David, Murray, Dave
• Primary Examiner(s): NGUYEN, TUAN HOANG
• Application Number:
  US14/011,416
• Publication Number:
  US 20130344808A1
• Time in Patent Office: 364 Days
• Field of Search: 455/41.1, 455/41.2, 455/67.11, 455/456.1, 370/338
• US Class Current: 455/41.1
• CPC Class Codes: G01S 5/0295 Proximity-based methods, e.g. position inferred from reception of particular signals
• CPC Class Codes: H04B 5/77 for interrogation
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 8/08 Mobility data transfer

Abstract

A mobile device may be operable to determine, based on a known location of the mobile device, a location for a RF communication device that communicates with the mobile device, whenever the mobile device is within proximate range of the RF communication device. The determined location for the RF communication device may be stored in a location database in a location server and/or a memory in the RF communication device. The stored location of the RF communication device may then be used to determine a location for other mobile devices that may communicate with the RF communication device and are within proximate range of the RF communication device. The RF communication device may comprise a radio-frequency identification (RFID) device and/or a near field communication (NFC) device. The determined location for the RF communication device may comprise the known location of the mobile device.

Claims

1. A method, comprising:

communicating, by a mobile device, with a radio frequency (RF) communication device when the mobile device is within an effective communication range;

retrieving, by the mobile device, a location of the RF communication device, the retrieved location of the RF communication device being previously determined based on a known location of one or more mobile devices; and

determining, by the mobile device, a location for the mobile device based on the retrieved location.

2. The method of claim 1, wherein the known location of the one or more mobile devices comprises a previously known location of the mobile device.

3. The method of claim 1, wherein the retrieving further comprises:

retrieving the retrieved location from a location database in a location server.

4. The method of claim 1, further comprising:

updating the location of the RF communication device based on a known location of the mobile device.

5. The method of claim 1, further comprising:

using the retrieved location by the mobile device for location-based access control.

6. The method of claim 1, further comprising using a radio frequency identification (RFID) protocol to communicate with the RF communication device, wherein the RF communication device comprises a RFID-enabled device.

7. The method of claim 1, further comprising using a near field communication (NFC) protocol to communicate with the RF communication device, wherein the RF communication device comprises a NFC-enabled device.

8. An apparatus, comprising:

a radio frequency (RF) communication module configured to communicate with a RF communication device when the apparatus is within an effective communication range;

a location module configured to;

retrieve a location of the RF communication device, the retrieved location of the RF communication device being previously determined based on a known location of one or more mobile devices; and

determine a location for the apparatus based on the retrieved location; and

a processor configured to control operation of the RF communication module and the location module.

9. The apparatus of claim 8, wherein:

the apparatus comprises a mobile communications device; and

the known location of the one or more mobile devices comprises a previously known location of the mobile communications device.

10. The apparatus of claim 8, wherein:

the location module is further configured to retrieve the retrieved location from a location database in a location server remote from the apparatus.

11. The apparatus of claim 8, further comprising:

a radio frequency identification (RFID) enabled device.

12. The apparatus of claim 11, wherein the RFID enabled device comprises a RFID tag and the RF communication device comprises a RFID reader.

13. The apparatus of claim 8, further comprising:

a near field communication (NFC) enabled device.

14. The apparatus of claim 13, wherein the NFC enabled device comprises a NFC target and the RF communication device comprises a NFC initiator.

15. The apparatus of claim 13, wherein the NFC enabled device comprises a NFC initiator and the RF communication device comprises a NFC target.

16. A mobile device, comprising:

a radio frequency (RF) communication circuit configured to control communication of the mobile device with an RF communication device;

an antenna configured to transmit and receive data in cooperation with the RF communication circuit;

a location circuit configured to retrieve a location of the RF communication device when the RF communication device is within an effective communication range and determine a location of the mobile device based on the retrieved location; and

a processor configured to control operation of the RF communication circuit, the antenna, and the location circuit,

wherein the retrieved location of the RF communication device has been previously determined based on a known location of one or more mobile devices.

17. The mobile device of claim 16, wherein the location circuit is further configured to update the location of the RF communication device based on a known location of the mobile device.

18. The mobile device of claim 17, wherein:

the processor is further configured to receive assisted global positioning (A-GPS) data from a location server; and

the location circuit is further configured to update the location of the RF communication device based on the A-GPS data.

19. The mobile device of claim 16, wherein the known location of the one or more mobile devices comprises a previously known location of the mobile device.

20. The mobile device of claim 16, wherein:

the location circuit is further configured to retrieve the retrieved location from a location database in a location server remote from the device.