System for determining position of mobile communication terminal and method thereof

• US RE43,356 E1
• Filed: 10/21/2005
• Issued: 05/08/2012
• Est. Priority Date: 12/26/2000
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hyong-Won
• Primary Examiner(s): PHAN, DAO LINDA
• Application Number:
  US11/255,237
• Time in Patent Office: 2,391 Days
• Field of Search: 342/357.01, 342/357.03, 342/357.06, 342/357.09, 342/357.14, 342/357.25, 342/357.29, 342/357.31, 342/357.44, 342/357.46, 701213-215
• US Class Current: 342/357.29
• CPC Class Codes: G01S 19/05 providing aiding data
• CPC Class Codes: G01S 19/09 providing processing capability normally carried out by the receiver
• CPC Class Codes: G01S 19/41 Differential correction, e.g. DGPS [differential GPS]
• CPC Class Codes: G01S 19/46 the supplementary measurement being of a radio-wave signal type
• CPC Class Codes: G01S 19/48 by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
• CPC Class Codes: G01S 19/50 whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
• CPC Class Codes: G01S 5/0036 of measured values, i.e. measurement on mobile and position calculation on base station

Abstract

A position determination system of a hybrid method, which is capable of complementing the problems of a position determination method, in which a global positioning system (GPS) is used, and a position determination method, in which a mobile communication signal is used, by combining the above two methods with each other, is provided. Also, it is possible to improve the reliability and the correctness in determining the position of a mobile communication terminal using a dispersing type hybrid position calculation method and a centralized hybrid position calculation method.

Claims

1. A system for determining the a position of a mobile communication terminal transmitting a mobile communication signal, comprising:

a global positioning system (GPS) engine, built-in a the mobile terminal, the GPS engine for measuring receiving a transmission signal of a GPS satellite and calculating a pseudo range between a the GPS satellite and the mobile terminal;

a plurality of signal measuring apparatus for measuring the a reception angle and the a delay time of a the mobile communication signal; and

a position calculation server for calculating the position of the mobile terminal using the pseudo range corrected by the error correction data of a associated with the GPS satellite signal and the reception angle and the delay time of the mobile communication signal.

2. The system of claim 1, further comprising a GPS receiver for receiving the transmission signal of the GPS satellite signal and periodically outputting the error correction data and the GPS satellite data of related to the GPS satellite signal.

3. The system of claim 1, further comprising:

a mobile communication signal server for storing the reception angle and the delay time measured by the plurality of signal measuring apparatus; and

a geographical information server, in which various geographical data items matching a position calculation result are stored.

4. The system of claim 1, wherein the position calculation server comprises:

a pseudo range corrector for correcting a the pseudo range using the error correction data;

a first position calculator for calculating the position of the mobile terminal by on the basis of the corrected pseudo range;

a second position calculator for calculating the position of the mobile terminal using the reception angle and the delay time of the mobile communication signal;

a position calculation filter for calculating the optimal position of the mobile terminal on the basis of the position calculations of the first and second position calculators; and

a map match portion for matching the geographical data of a geographical information server to the calculation result of position calculated by the position calculation filter and generating various position information items.

5. The system of claim 1, wherein the position calculation server comprises:

thea pseudo range corrector for correcting the pseudo range using the error correction data;

thea position calculation filter for calculating the position of the mobile terminal using the corrected pseudo range and the reception angle and the delay time of the mobile communication signal; and

thea map match portion for matching the geographical data of the a geographical information server to the calculation result of position calculated by the position calculation filter and generating the various position information items.

6. A system for determining the a position of a mobile terminal transmitting a mobile communication signal, comprising:

a mobile terminal, in which a GPS engine is loaded;

a plurality of signal measuring apparatus for measuring the a reception angle and the a delay time of a the mobile communication signal;

a GPS receiver for receiving the a transmission signal of a GPS satellite and measuring the periodically outputting error correction data and the GPS satellite data of a related to the GPS satellite signal;

a pseudo range corrector for correcting the a pseudo range measured calculated by the GPS engine using the error correction data;

a first position calculator for calculating the position of the mobile terminal by on the basis of the corrected pseudo range;

a second position calculator for calculating the position of the mobile terminal using the reception angle and the delay time of the mobile communication signal; and

a position calculation filter for calculating the optimal position of the mobile terminal on the basis of the calculation results position calculations of the first and second position calculators.

7. The system of claim 6, further comprising:

thea geographical information server for storing various geographical data items; and

thea map match portion for matching the geographical data of the geographical information server to the position calculation result ofcalculated by the position calculation filter and generating various position information items.

8. A system for determining the a position of a mobile communication terminal transmitting a mobile communication signal, comprising:

a mobile terminal, in which a GPS engine is loaded;

a plurality of signal measuring apparatus for measuring the a reception angle and the a delay time of a the mobile communication signal;

a GPS receiver for receiving the a transmission signal of a GPS satellite and measuring the periodically outputting error correction data and the GPS satellite data of a related to the GPS satellite signal;

a pseudo range corrector for correcting the a pseudo range calculated by the GPS engine using the error correction data; and

a position calculation filter for calculating the position of the mobile terminal using the corrected pseudo range and the reception angle and the delay time of the mobile communication signal.

9. The system of claim 8, further comprising:

thea geographical information server for storing various geographical data items; and

thea map match portion for matching the geographical data of the geographical information server to the position calculation result ofcalculated by the position calculation filter and generating various position information items.

10. A method for determining the a position of a mobile communication terminal transmitting a mobile communication signal, comprising the steps of:

(a) receiving a pseudo range between a GPS satellite and a the mobile terminal;

(b) receiving the a reception angle and the a delay time of a the mobile communication signal;

(c) correcting the pseudo range using the error correction data of a related to the GPS satellite signal; and

(d) calculating the position of the mobile terminal using the corrected pseudo range and the reception angle and the delay time of the mobile communication signal.

11. The method of claim 10, further comprising the steps of matching the position calculation result to the geographical data and generating position information for providing various geographical information services.

12. The method of claim 10, further comprising the step of periodically receiving the error correction data and the GPS satellite information of data related to the GPS satellite signal from the a GPS receiver.

13. The method of claim 10, wherein the reception angle and the delay time are stored in the a mobile communication signal server.

14. Method The method of claim 10, wherein the step (d) comprises the steps of:

(d1) calculating the position of the mobile terminal by on the basis of the corrected pseudo range;

(d2) calculating the position of the mobile terminal using the reception angle and the delay time of the mobile communication signal; and

(d3) calculating the optimal position of the mobile terminal on the basis of the calculation results obtained by the steps (d1) and (d2).

15. The method of claim 10, wherein, in the step (d3), if the position of the mobile communication terminal is cannot be calculated on the basis of the calculation results obtained by steps (d1) and (d2), then the step (d) further comprises:

using the reception angle and the delay time of the mobile communication signalcalculating the position of the mobile terminal on the basis of the calculation result obtained in either (d1) or (d2).

16. A method for determining the a position of a mobile communication terminal transmitting a mobile communication signal, comprising the steps of:

(a) receiving a pseudo range between a GPS satellite and a the mobile terminal;

(b) receiving the a reception angle and the a delay time of a the mobile communication signal;

(c) correcting the pseudo range using the error correction data of a related to the GPS satellite signal;

(d) calculating the position of the mobile terminal using the corrected pseudo range;

(e) calculating the position of the mobile terminal using the reception angle and the delay time of the mobile communication signal;

(f) calculating the optimal position of the mobile terminal on the basis of the calculation results obtained by the steps (d) and (e); and

(g) matching the final position calculation result of the mobile terminal to the geographical data and generating position information for providing geographical information services.

32. The method according to claim 16, wherein, in the step (f), if the position of the mobile terminal cannot be calculated on the basis of the calculation results obtained by the steps (d) and (e), then calculating the position of the mobile terminal on the basis of the calculation result obtained in either step (d) or step (e).

17. A mobile communication terminal comprising:

a global positioning system (GPS) engine, the GPS engine for measuring a pseudo range between a GPS satellite and the mobile communication terminal, the mobile communication terminal transmitting a mobile communication signal, wherein the mobile communication terminal is a part of a system comprising;

a plurality of signal measuring apparatus; and

a position calculation server for calculating the position of the mobile terminal using the pseudo range corrected by error correction data associated with the GPS satellite and a measurement associated with the plurality of signal measuring apparatus, wherein the measurement is based on information that includes a delay time of the mobile communication signal.

18. The mobile communication terminal according to claim 17, wherein if the position calculation server cannot use the measurement associated with the plurality of signal measuring apparatus and the corrected pseudo range for calculating the position of the mobile communication terminal, the position of the mobile communication terminal is calculated from either the measurement associated with the plurality of signal measuring apparatus or the corrected pseudo range.

19. The mobile communication terminal according to claim 17, wherein the system further comprises a GPS receiver for receiving a transmission signal of the GPS satellite and periodically outputting the error correction data and GPS satellite data related to the GPS satellite.

20. The mobile communication terminal according to claim 17, wherein the system further comprises:

a mobile communication signal server for storing the measurement associated with the plurality of signal measuring apparatus; and

a geographical information server, in which various geographical data items matching a position calculation result are stored.

21. The mobile communication terminal according to claim 17, wherein the position calculation server comprises:

a pseudo range corrector for correcting the pseudo range using the error correction data;

a first position calculator for calculating the position of the mobile terminal using the corrected pseudo range;

a second position calculator for calculating the position of the mobile terminal using the measurement associated with the plurality of signal measuring apparatus;

a position calculation filter for calculating the position of the mobile terminal on the basis of the position calculations of the first and second position calculators; and

a map match portion for matching geographical data of a geographical information server to the position calculated by the position calculation filter and generating various position information items.

22. The mobile communication terminal according to claim 17, wherein the position calculation server comprises:

a pseudo range corrector for correcting the pseudo range using the error correction data;

a position calculation filter for calculating the position of the mobile terminal using the corrected pseudo range and the measurement associated with the plurality of signal measuring apparatus; and

a map match portion for matching geographical data of a geographical information server to the position calculated by the position calculation filter and generating various position information items.

23. A mobile communication terminal including a GPS engine, the mobile communication terminal transmitting a mobile communication signal and being a part of a system comprising:

a plurality of signal measuring apparatus;

a GPS receiver for receiving a transmission signal of a GPS satellite and periodically outputting error correction data and GPS satellite data related to the GPS satellite;

a pseudo range corrector for correcting a pseudo range calculated by the GPS engine using the error correction data;

a first position calculator for calculating the position of the mobile communication terminal on the basis of the corrected pseudo range;

a second position calculator for calculating the position of the mobile communication terminal using a measurement associated with the plurality of signal measuring apparatus, wherein the measurement is based on information that includes a delay time of the mobile communication signal; and

a position calculation filter for calculating the position of the mobile communication terminal on the basis of the position calculations of the first and second position calculators.

24. The mobile communication system according to claim 23, wherein if the position calculation filter cannot use the measurement associated with the plurality of signal measuring apparatus from the second position calculator and the corrected pseudo range of the first position calculator to calculate the position of the mobile communication terminal, the position of the mobile communication terminal is calculated from either the measurement associated with the plurality of signal measuring apparatus of the second position calculator or the corrected pseudo range of the first position calculator.

25. The mobile communication system according to claim 23, wherein the system further comprises:

a geographical information server for storing various geographical data items; and

a map match portion for matching the geographical data of the geographical information server to the position calculated by the position calculation filter and generating various position information items.

26. A method for determining a position of a mobile communication terminal transmitting a mobile communication signal, comprising:

(a) receiving a pseudo range between a GPS satellite and the mobile terminal;

(b) receiving a measurement associated with a plurality of signal measuring apparatus, wherein the measurement is based on information that includes a delay time of the mobile communication signal;

(c) correcting the pseudo range using error correction data related to the GPS satellite; and

(d) calculating the position of the mobile terminal using the corrected pseudo range and the measurement associated with the plurality of signal measuring apparatus.

27. The method according to claim 26, further comprising matching the position calculation result to geographical data and generating position information for providing geographical information services.

28. The method according to claim 26, further comprising periodically receiving the error correction data and GPS satellite data related to the GPS satellite from a GPS receiver.

29. The method according to claim 26, wherein the measurement associated with the plurality of signal measuring apparatus is stored in a mobile communication signal server.

30. The method according to claim 26, wherein the step (d) comprises:

(d1) calculating the position of the mobile terminal on the basis of the corrected pseudo range;

(d2) calculating the position of the mobile terminal using the measurement associated with the plurality of signal measuring apparatus; and

(d3) calculating the position of the mobile terminal on the basis of the calculation results obtained by the steps (d1) and (d2).

31. The method according to claim 26, wherein, in the step (d3), if the position of the mobile communication terminal cannot be calculated on the basis of the calculation results obtained by steps (d1) and (d2), then the step (d3) further comprises:

calculating the position of the mobile terminal on the basis of the calculation result obtained in either (d1) or (d2).