Abstract: A method and apparatus for measuring a location of a communication terminal using an access point is provided. Information of nearby access points from the communication terminal is received. A predetermined number of nearby access points among the nearby access points is selected based on the received information. Location coordinates of the selected predetermined number of nearby access points are extracted. A barycentric coordinate is calculated using the extracted location coordinates. The calculated barycentric coordinate is determined as a final location of the communication terminal.

Abstract: A method and apparatus for measuring a location of a communication terminal using an access point is provided. Information of nearby access points from the communication terminal is received. A predetermined number of nearby access points among the nearby access points is selected based on the received information. Location coordinates of the selected predetermined number of nearby access points are extracted. A barycentric coordinate is calculated using the extracted location coordinates. The calculated barycentric coordinate is determined as a final location of the communication terminal.

Abstract: A method and apparatus for measuring a location of a communication terminal using an access point is provided. Information of nearby access points from the communication terminal is received. A predetermined number of nearby access points among the nearby access points is selected based on the received information. Location coordinates of the selected predetermined number of nearby access points are extracted. A barycentric coordinate is calculated using the extracted location coordinates. The calculated barycentric coordinate is determined as a final location of the communication terminal.

Abstract: A method and apparatus for updating information of an access point for a wireless local area network service in measuring a location of a communication terminal using the access point are provided. The method includes: storing information of access points in a storage unit; receiving information of nearby access points from a specific communication terminal to be measured for location; checking whether there exists an access point of which information is not stored in the storage unit among the nearby access points; performing a global positioning system (GPS) location measurement for the specific communication terminal when there exists the access point of which the information is not stored; and storing the GPS location measurement result and the information of the nearby access points in the storage unit.

Abstract: A location detecting method and an apparatus for providing a differential location-based service to detect a location of a communication terminal using an access point for a wireless local area network service is provided. The method includes storing location coordinates of access points, receiving service grade information and information related to nearby access points from the communication terminal, selecting a predetermined number of nearby access points based on the received service grade information and information of nearby access points, obtaining a location coordinate of each of the selected nearby access points, and calculating a centric coordinate using the obtained location coordinates of at least two of the selected access points, and determining the calculated centric coordinate as the detected location of the communication terminal.

Abstract: Provided is a method and system for collecting access point information in linkage with a mobile card payment system to measure a location of a user using an access point of a wireless local area network (WLAN) service. The method may include (a) receiving payment information relating to a mobile communication terminal from a card company server, (b) transmitting an access point information collecting control signal to the mobile communication terminal based on the payment information, (c) receiving access point information collected by the mobile communication terminal in response to the control signal, and (d) storing the received access point information in a storage means.

Abstract: Measuring a location of a communication terminal using a wireless local area network access point based on location coordinates of the access points and global positioning system (GPS) location information of the communication terminal.

Abstract: Measuring a location of a communication terminal using a wireless local area access point based on location coordinates of the access points and location information of a nearby lamp.

Abstract: A method and apparatus for measuring a location of a communication terminal using an access point for a wireless local area network service is provided. The method includes storing access point information collected at each location, extracting information of nearby access points collected together at a location, where information of a reference access point is collected, from the access point information, calculating a barycentric coordinate using location coordinates of the extracted nearby access points, and determining the calculated barycentric coordinate as a final location of the communication terminal.

Abstract: An indoor location measuring method and apparatus are provided. An apparatus for sectionalizing an indoor area for indoor location measurement includes a reference coordinate inputting unit which receives an input of a reference coordinate corresponding to the indoor area; a sector number inputting unit which receives an input of a number of sectors per column or row in the indoor area; and a sectionalization calculating unit which sectionalizes the indoor area into a predetermined number of sectors based on the reference coordinate and the number of sectors per column or row, and calculates a coordinate of a point of a sector among the sectionalized predetermined number of sectors.

Abstract: Provided is an indoor location measuring method and apparatus. The indoor location measuring apparatus that measures a location of a communication terminal within a building by determining a floor where the communication terminal is located may include a floor classifying means for classifying information relating to a plurality of access points (APs) and collected by the communication terminal for each floor, and a location determining means for assigning a grade constant to each item of AP information classified for each floor based on the signal intensity included in the AP information, and for calculating the sum of the grade constants for each floor, and for determining a floor having the largest sum as a location of the communication terminal.

Abstract: A method and apparatus for measuring a location of a communication terminal using an access point for a wireless local area network service is provided. The method includes storing access point information collected at each location, extracting information of nearby access points collected together at a location, where information of a reference access point is collected, from the access point information, calculating a barycentric coordinate using location coordinates of the extracted nearby access points, and determining the calculated barycentric coordinate as a final location of the communication terminal.

Abstract: A location detecting method and an apparatus for providing a differential location-based service to detect a location of a communication terminal using an access point for a wireless local area network service is provided. The method includes storing location coordinates of access points, receiving service grade information and information related to nearby access points from the communication terminal, selecting a predetermined number of nearby access points based on the received service grade information and information of nearby access points, obtaining a location coordinate of each of the selected nearby access points, and calculating a centric coordinate using the obtained location coordinates of at least two of the selected access points, and determining the calculated centric coordinate as the detected location of the communication terminal.

Abstract: Provided is a method and system for collecting access point information in linkage with a mobile card payment system to measure a location of a user using an access point of a wireless local area network (WLAN) service. The method may include (a) receiving payment information relating to a mobile communication terminal from a card company server, (b) transmitting an access point information collecting control signal to the mobile communication terminal based on the payment information, (c) receiving access point information collected by the mobile communication terminal in response to the control signal, and (d) storing the received access point information in a storage means.

Abstract: Provided is an indoor location measuring method and apparatus. The indoor location measuring apparatus that measures a location of a communication terminal within a building by determining a floor where the communication terminal is located may include a floor classifying means for classifying information relating to a plurality of access points (APs) and collected by the communication terminal for each floor, and a location determining means for assigning a grade constant to each item of AP information classified for each floor based on the signal intensity included in the AP information, and for calculating the sum of the grade constants for each floor, and for determining a floor having the largest sum as a location of the communication terminal.

Abstract: Measuring a location of a communication terminal using a wireless local area access point based on location coordinates of the access points and location information of a nearby lamp.

Abstract: An indoor location measuring method and apparatus are provided. An apparatus for sectionalizing an indoor area for indoor location measurement includes a reference coordinate inputting unit which receives an input of a reference coordinate corresponding to the indoor area; a sector number inputting unit which receives an input of a number of sectors per column or row in the indoor area; and a sectionalization calculating unit which sectionalizes the indoor area into a predetermined number of sectors based on the reference coordinate and the number of sectors per column or row, and calculates a coordinate of a point of a sector among the sectionalized predetermined number of sectors.

Abstract: A method and apparatus for updating information of an access point for a wireless local area network service in measuring a location of a communication terminal using the access point are provided. The method includes: storing information of access points in a storage unit; receiving information of nearby access points from a specific communication terminal to be measured for location; checking whether there exists an access point of which information is not stored in the storage unit among the nearby access points; performing a global positioning system (GPS) location measurement for the specific communication terminal when there exists the access point of which the information is not stored; and storing the GPS location measurement result and the information of the nearby access points in the storage unit.

Abstract: A method and apparatus for measuring a location using an access point for a wireless local area network service are provided. The method includes: storing location coordinates of access points in a storage unit; receiving information of nearby access points from the communication terminal; selecting a predetermined number of nearby access points based on the received access point information; extracting location coordinates of the selected predetermined number of nearby access points from the storage unit; and calculating a barycentric coordinate using the extracted location coordinates, and determining the calculated barycentric coordinate as a final location of the communication terminal.

Abstract: Measuring a location of a communication terminal using a wireless local area network access point based on location coordinates of the access points and global positioning system (GPS) location information of the communication terminal.