Method of calculating accuracy of measuring location, and method and apparatus for measuring location of terminal using accuracy of measuring location

• US 9,026,361 B2
• Filed: 08/31/2012
• Issued: 05/05/2015
• Est. Priority Date: 09/26/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Eung Sun, Park, Dohyung, Kim, Yong
• Primary Examiner(s): Cheung, Mary
• Application Number:
  US13/600,956
• Publication Number:
  US 20130080048A1
• Time in Patent Office: 977 Days
• Field of Search: 701/400, 701/408, 701/409, 701/425, 701/430, 701/431, 701/445, 701/449, 701/450, 701/455, 701/469
• US Class Current: 701/469
• CPC Class Codes: G01C 21/20 Instruments for performing navigational calculations G01C21/24, G01C21/26 take precedence
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences

Abstract

A method of calculating an accuracy of measuring a location, and a method and apparatus to measure a location of a terminal using the accuracy of measuring the location, are provided. The method of calculating the accuracy of measuring the location of the terminal includes providing a map corresponding to a location measurement type that is used in the terminal. The method further includes reading, from the map, map information of a predetermined area including the location of the terminal. The method further includes calculating the accuracy of measuring the location with the location measurement type based on the map information.

Claims

1. A method of measuring a location of a terminal based on an accuracy of measuring the location, the method comprising:

calculating the accuracy of measuring the location, of each of at least two location measurement types, based on the location of the terminal;

setting a window with respect to a predetermined area including the location of the terminal when the accuracy of measuring the location converges within a predetermined range;

recalculating the accuracy of measuring the location based on map information in the window;

selecting one of the at least two location measurement types based on the accuracy of measuring the location, of each of the at least two location measurement types; and

measuring the location of the terminal based on the selected one of the at least two location measurement types.

2. The method of claim 1, wherein the calculating of the accuracy of measuring the location further comprises:

calculating the accuracy of measuring the location, of each of at least two location measurement types, based on the location of the terminal and a map of each of the at least two location measurement types.

3. The method of claim 1, wherein the calculating of the accuracy of measuring the location further comprises:

providing a map of each of the at least two location measurement types that are used in the terminal;

reading, from the map of each of the at least two location measurement types, map information of a predetermined area comprising the location of the terminal; and

calculating the accuracy of measuring the location, of each of the at least two location measurement types, based on the map information.

4. The method of claim 3, wherein the calculating of the accuracy of measuring the location further comprises:

calculating the accuracy of measuring the location, of each of the at least two location measurement types based on a distance between a first location and a second location that are predetermined in the predetermined area, and a difference between a first point corresponding to the first location and a second point corresponding to the second location, in the map information.

5. The method of claim 3, further comprising:

adjusting the size of the predetermined area.

6. The method of claim 5, further comprising:

recalculating the accuracy of measuring the location, of each of the at least two location measurement types, based on the map information of the adjusted predetermined area.

7. The method of claim 1, further comprising:

displaying, for a user of the terminal, the accuracy of measuring the location, of each of the at least two location measurement types.

8. The method of claim 7, further comprising:

receiving, from the user of the terminal, an input of information regarding the selected one of the at least two location measurement types.

9. A non-transitory computer-readable storage medium storing a program comprising instructions to cause a computer to perform the method measuring a location of a terminal based on an accuracy of measuring the location, the method comprising:

calculating the accuracy of measuring the location, for each of at least two location measurement types, based on the location of the terminal;

setting a window with respect to a predetermined area including the location of the terminal when the accuracy of measuring the location converges within a predetermined range;

recalculating the accuracy of measuring the location based on map information in the window;

selecting one of the at least two location measurement types based on the accuracy of measuring the location, for each of the at least two location measurement types; and

measuring the location of the terminal based on the selected one of the at least two location measurement types.

10. An apparatus configured to measure a location of a terminal based on an accuracy of measuring a location, the apparatus comprising:

a calculating module configured to calculate the accuracy of measuring the location, of each of at least two location measurement types, based on the location of the terminal;

a selecting module configured to select one of the at least two location measurement types based on the accuracy of measuring the location, of each of the at least two location measurement types; and

a location measuring module configured to measure the location of the terminal based on the selected one of the at least two location measurement types,

wherein the calculating module is configured to set a window with respect to a predetermined area including the location of the terminal when the accuracy of measuring the location converges within a predetermined range, and to recalculate the accuracy of measuring the location based on map information in the window.

11. The apparatus of claim 10, further comprising:

a database configured to store a map of each of the at least two location measurement types that are used in the terminal,

wherein the calculating module further comprises;

a reading unit configured to read, from the map of each of the at least two location measurement types, the map information of a predetermined area comprising the location of the terminal; and

a calculating unit configured to calculate the accuracy of measuring the location, of each of the at least two location measurement types, based on the map information.