Apparatus and method for providing a telematics service having and AGPS function

• US 20050065725A1
• Filed: 08/12/2004
• Published: 03/24/2005
• Est. Priority Date: 09/20/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Chan-Woo, Jeon, Ji-Youn, Kim, Jin-Won
• Granted Patent: US 7,330,789 B2
• Time in Patent Office: Days
• US Class Current: 701/213
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 19/14 specially adapted for specific applications

Abstract

An apparatus for providing a telematics service including an AGPS function. An initial position measuring time of a telematics system is shortened due to the AGPS function of the telematics service, so the telematics service is rapidly provided to a user. Because the telematics system utilizes satellite ephemeris information and user position information, a reception sensitivity of a GPS signal is improved in a downtown area, in which the GPS signal is attenuated. The telematics system includes an AGPS information processing module for rapidly providing the telematics service to the user.

Claims

1. A telematics system comprising:

a position determination entity (PDE) server for storing and managing AGPS (Advanced Global Positioning System) information including ephemeris information and compensation information of a satellite;

a telematics terminal for receiving the AGPS information from the PDE server, determining present position information of a moving object using the AGPS information, and requesting a telematics service using the present position information; and

a telematics server for receiving the AGPS information from the PDE server, transmitting the AGPS information to the telematics terminal, and providing the telematics terminal with the telematics service requested by the telematics terminal, using the present position information of the telematics terminal.

2. The telematics system as claimed in claim 1, wherein the position determination entity server is directly connected to the telematics server in order to transmit and receive the AGPS information to and from the telematics server.

3. The telematics system as claimed in claim 1, wherein the PDE server comprises:

a first GPS receiving section for receiving a GPS signal from a GPS satellite;

a position calculating section for calculating a position of the PDE server using the GPS signal received in the first GPS receiving section, measuring the ephemeris information and the error information of the satellite, and calculating a position of the telematics terminal utilizing the ephemeris information and the error information of the satellite; and

a telematics interface section for interfacing with the telematics server.

4. The telematics system as claimed in claim 1, wherein the telematics terminal comprises:

a processing section for managing an operation of the telematics terminal based on an external operating signal;

a communication section for communicating with the telematics server under a control of the processing section in order to receive the AGPS information; and

an AGPS module for determining the present position of the moving object using the AGPS information transmitted thereto from the communication section.

5. The telematics system as claimed in claim 4, wherein the processing section transmits a control signal required for determining the present position to the AGPS module, receives an AGPS information request message required for calculating a position from the AGPS module, and transmits the AGPS information request message to the telematics server through the communication section.

6. The telematics system as claimed in claim 4, wherein the processing section receives the present position information from the AGPS module, transmits present position information to the telematics server through the communication section, and requests a service utilizing the present position information.

7. The telematics system as claimed in claim 4, wherein the processing section receives the AGPS information and a service utilizing the present position information from the telematics server through the communication section in order to transmit the AGPS information to the AGPS module and to provide the service utilizing present position information to a user.

8. The telematics system as claimed in claim 4, wherein the communication section comprises an individual mobile communication terminal connected to a mobile communication network.

9. The telematics system as claimed in claim 4, wherein the communication section comprises a mobile communication module accommodated in the telematics terminal.

10. The telematics system as claimed in claim 4, wherein the AGPS module comprises:

a second GPS receiving section for receiving a GPS signal from a GPS satellite by using the AGPS information; and

a position calculating section for determining the present position of the telematics terminal using the GPS signal received in the second GPS receiving section.

11. The telematics system as claimed in claim 4, wherein the communication section obtains time information of the telematics system, synchronizes the time information of the telematics system with time information of the telematics terminal, and transmits the synchronized time information to the AGPS module.

12. The telematics system as claimed in claim 11, wherein the AGPS module calculates the present position of the moving object using the time information and the AGPS information transmitted thereto from the communication section.

13. A method for providing a telematics service, comprising the steps of:

receiving AGPS information including ephemeris information and compensation information of a satellite using a telematics terminal in order to measure a present position of a moving object;

measuring the present position of the moving object using the AGPS information and time information of the telematics terminal; and

receiving a position-related service based on the present position of the moving object.

14. The method as claimed in claim 13, wherein step of receiving the AGPS information comprises:

transmitting a signal requesting the AGPS information to a position determination entity server that stores and manages the AGPS information including the ephemeris information and the compensation information of the satellite; and

receiving the AGPS information from the position determination entity server.

15. The method as claimed in claim 13, wherein the time information of the telematics terminal is synchronized with time information of a telematics system by means of a communication section.

16. The method as claimed in claim 13, wherein the time information of the telematics terminal is received in the telematics terminal together with the AGPS information.

17. The method as claimed in claim 13, wherein the position-related service includes an emergency rescue service using information related to the present position of the moving object.

18. The method as claimed in claim 13, wherein the position-related service includes a traffic information service using information related to the present position of the moving object.

19. The method as claimed in claim 13, wherein the position-related service includes a navigation service using information related to the present position of the moving object.