Processing

Please wait...

Settings

Settings

Goto Application

1. WO2011008206 - METHOD AND APPARATUS FOR GEOGRAPHIC POSITIONING

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. A method for geographic positioning a receiver, comprising:

storing a location database of station devices fixed on earth surface according to routes of the receiver;

receiving wireless signals from one or more station devices at a location on a route;

obtaining identifications of the station devices from the wireless signals;

searching the location database to obtain locations of the station devices based on the identifications; and

determining location coordinates of the receiver based on the locations of the station devices and signal attributes of the wireless signals.

2. The method of claim 1 , wherein storing the location database of station devices fixed on earth surface according to routes of the receiver, further comprises:

storing a plurality of station devices in a linked list corresponding to a route of the receiver.

3. The method of claim 1, wherein determining the location coordinates of the receiver based on the locations of the station devices and signal attributes of the wireless signals further comprises:

determining the location of the receiver based on at least one of Doppler frequency shift and received signal strength of the wireless signals.

4. The method of claim 1 , wherein determining the location of the receiver based on the location of the station devices and the wireless signals further comprises:

determining the location of the receiver according to at least one of a trilateration algorithm, a centroid algorithm and a fingerprinting algorithm.

5. A method for geographic positioning a transmitting station, comprising:

receiving wireless signals from the transmitting station at a plurality of locations on a route near the transmitting station;

determining geographic location information of the plurality of locations corresponding to the received wireless signals; and

determining location coordinates of the transmitting station based on the geographic location information of the plurality of locations and the wireless signals.

6. The method of claim 5, further comprising:

determining motion information of a moving receiver at the plurality of locations while receiving the wireless signals.

7. The method of claim 6, wherein determining the location of the transmitting station based on the geographic location information of the plurality of locations and the wireless signals, further comprises:

determining the location of the transmitting station based on the motion information at the plurality of locations and Doppler frequency shifts of the received wireless signals.

8. The method of claim 5, wherein determining the location of the transmitting station based on the geographic location information of the plurality of locations and the wireless signals, further comprises:

determining the location of the transmitting station based on the geographic location information of the plurality of locations and received signal strength indicators of the wireless signals.

9. The method of claim 5, wherein determining the geographic location information of the plurality of locations corresponding to the received wireless signals, further comprises:

determining the geographic location information based on a global navigation satellite system (GNSS).

10. The method of claim 5, further comprising:

obtaining an identification of the transmitting station from the wireless signals; and

updating a linked list corresponding to the route with a node corresponding to the transmitting station having the identification and the determined location information.

11. A geographic positioning device, comprising:

a memory unit configured to store a location database of station devices fixed on earth surface according to routes of the receiver;

a receiver module configured to receive wireless signals from one or more station devices;

a processor module configured to identify the station devices based on the wireless signals, search the location database to obtain locations of the station devices, and determine location of the geographic positioning device based on the locations of the station devices and the wireless signals.

12. The geographic positioning device of claim 11, further comprising:

a transmitter module configured to transmit a wireless signal including the determined location.

13. The geographic positioning device of claim 11 , wherein the memory unit is configured to store a plurality of linked lists corresponding to a plurality of routes, and nodes in the linked lists correspond to the station devices.

14. The geographic positioning device of claim 11 , wherein the processor is further configured to obtain an identification of a station device from a data packet decoded from a wireless signal emitted from the station device.

15. The geographic positioning device of claim 11, wherein the processor is further configured to determine the location of the geographic positioning device according to at least one of a trilateration algorithm, a centroid algorithm and a fingerprinting algorithm.

16. A geographic positioning device for positing a transmitting station, comprising: a receiver module configured to receive wireless signals from the transmitting station at a plurality of locations on a route near the transmitting station;

a global navigation satellite system (GNSS) configured to determine geographic location information of the plurality of locations corresponding to the received wireless signals; and

a processor configured to determine a location of the transmitting station based on the geographic location information of the plurality of locations and the wireless signals.

17. The geographic positioning device of claim 15, wherein the GNSS is further configured to determine motion information of the geographic positioning device at the plurality of locations while receiving the wireless signals, and the processor is further configured to

determine the location of the transmitting station based on the motion information at the plurality of locations and Doppler frequency shifts of the received wireless signals.

18. The geographic positioning device of claim 16, wherein the processor is further configured to determine the location of the transmitting station based on the geographic location information of the plurality of locations and received signal strength indicators (RSSI) of the wireless signals.

19. The geographic positioning device of claim 15, further comprising:

a memory unit configured to store at least one of Doppler frequency shifts and received signal strength indicators of the wireless signals corresponding the plurality of locations.

20. The geographic positioning device of claim 19, wherein the processor is configured to determine the location of the transmitting station off-line based on data in the memory unit.