High-speed positioning system and method

• US 8,044,848 B2
• Filed: 07/18/2008
• Issued: 10/25/2011
• Est. Priority Date: 07/20/2007
• Status: Active Grant

• Current Assignee: MiTAC International Corporation (MiTAC Holdings Corp.)
• Original Assignee: MiTAC International Corporation (MiTAC Holdings Corp.)
• Inventors: Yeh, Chun-Nan
• Primary Examiner(s): Tarcza; Thomas
• Assistant Examiner(s): Mull; Fred H
• Application Number:
  US12/175,875
• Publication Number:
  US 20090021426A1
• Time in Patent Office: 1,194 Days
• Field of Search: 342/357.43, 342/357.64
• US Class Current: 342/357.43
• CPC Class Codes: G01S 19/06 employing an initial estimate of the location of the receiver as aiding data or in generating aiding data

Abstract

A high-speed positioning system includes a server and a positioning device. The server links to Internet for receiving and interpreting GPS signals received from a satellite system. The positioning device includes a network connecting module, a user position information generator and a satellite positioning module. The network connecting module is in communication with a connecting node of Internet for receiving a connecting node information. The user position information generator generates a user position information according to the connecting node information. The user position information is transmitted to the server through Internet. A satellite position signal is generated by the server according to the user position information and sent back to the user position information generator through Internet. The satellite positioning module is in communication with the network connecting module for receiving the satellite position signal and executing a positioning operation according to the contents of the satellite position signal.

Claims

1. A high-speed positioning system, comprising:

a server linking to Internet for receiving and interpreting GPS signals received from a satellite system; and

a positioning device comprising;

a network connecting module in communication with a connecting node of Internet for receiving a connecting node information;

a user position information generator in communication with the network connecting module for generating a user position information according to the connecting node information, wherein the user position information generator is a look-up table storing therein mobile country code and corresponding user position information, and the user position information is a location'"'"'s coordinate, the user position information is transmitted to the server through Internet, and an assisted satellite position signal is generated by the server according to the user position information and sent back to the user position information generator through Internet; and

a satellite positioning module in communication with the network connecting module for receiving the assisted satellite position signal and executing a positioning operation according to the contents of the assisted satellite position signal;

wherein the user position information corresponding to the connecting node information is retrieved from the look-up table if the look-up table contains the whole contents of the connecting node information, and the user position information corresponding to the mobile country code is retrieved from the look-up table if the look-up table contains partial contents of the connecting node information;

wherein when the look-up table contains partial contents of the connecting node information, the look-up table is updated and wherein the look-up table is updated by storing therein the connecting node information together with a precise coordinate of the location of the positioning device obtained by the satellite positioning module that executes the positioning operation according to the contents of the assisted satellite position signal.

2. The high-speed positioning system according to claim 1, wherein the server is an assisted GPS (AGPS) server.

3. The high-speed positioning system according to claim 1, wherein the positioning device is a mobile phone and the connecting node information is the identity code of a base station.

4. The high-speed positioning system according to claim 1, wherein the positioning device is a personal digital assistant and the connecting node information is the identity code of a wireless network access point.

5. A high-speed positioning system, comprising:

a server linking to Internet for receiving and interpreting GPS signals received from a satellite system, a user position information generator being disposed in the server; and

a positioning device comprising;

a network connecting module in communication with a connecting node of Internet for receiving a connecting node information, wherein the connecting node information is transmitted to the server through Internet, according to the connecting node information, corresponding user position information being generated by the user position information generator, and an assisted satellite position signal is generated from the server according to the connecting node information, wherein the user position information generator is a look-up table storing therein mobile country code and corresponding user position information, and the user position information is a location'"'"'s coordinate; and

a satellite positioning module in communication with the network connecting module for receiving the assisted satellite position signal and executing a positioning operation according to the contents of the assisted satellite position signal;

wherein the user position information corresponding to the connecting node information is retrieved from the look-up table if the look-up table contains the whole contents of the connecting node information, and the user position information corresponding to the mobile country code is retrieved from the look-up table if the look-up table contains partial contents of the connecting node information;

wherein when the look-up table contains partial contents of the connecting node information, the look-up table is updated and wherein the look-up table is updated by storing therein the connecting node information together with a precise coordinate of the location of the positioning device obtained by the satellite positioning module that executes the positioning operation according to the contents of the assisted satellite position signal.

6. The high-speed positioning system according to claim 5, wherein the server is an assisted GPS (A-GPS) server including the user position information generator.

7. The high-speed positioning system according to claim 5, wherein the positioning device is a mobile phone and the connecting node information is the identity code of a base station.

8. The high-speed positioning system according to claim 5, wherein the positioning device is a personal digital assistant and the connecting node information is the identity code of a wireless network access point.

9. A high-speed positioning method, comprising steps of:

allowing a server to receive and interpret GPS signals received from a satellite system;

allowing a positioning device to communicate with Internet through a connecting node to receive connecting node information;

allowing a user position information generator to generate user position information according to the connecting node information, wherein the user position information generator is a look-up table storing therein mobile country code and corresponding user position information, and the user position information is a location'"'"'s coordinate, the user position information corresponding to the connecting node information is retrieved from the look-up table if the look-up table contains the whole contents of the connecting node information, and the user position information corresponding to the mobile country code is retrieved from the look-up table if the look-up table contains partial contents of the connecting node information;

generating an assisted satellite position signal from the server according to the user position information;

receiving the assisted satellite position signal by the positioning device and executing a positioning operation according to the contents of the assisted satellite position signal; and

updating the look-up table when the look-up table contains partial contents of the connecting node information by storing in the look-up table, the connecting node information together with a precise coordinate of the location of the positioning device obtained by executing the positioning operation according to the contents of the assisted satellite position signal.

10. The high-speed positioning method according to claim 9, wherein the connecting node information is transmitted to the server through Internet and the user position information is generated from the server.

11. The high-speed positioning method according to claim 9, wherein the server is an assisted GPS (A-GPS) server.

12. The high-speed positioning method according to claim 9, wherein the positioning device is a mobile phone and the connecting node information is the identity code of a base station.

13. The high-speed positioning method according to claim 9, wherein the positioning device is a personal digital assistant and the connecting node information is the identity code of a wireless network access point.