Patent ID: 9380472
Filing Date: 2016-06-28
CPC Classification: H04W

Claim Text:
1. A method for updating information of an access point in a location measurement using the access point, the method comprising: receiving information of nearby access points from a specific communication terminal to be measured for location; checking whether there exists an access point, among the nearby access points, of which information is not stored in a storage unit; 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; storing a result of the GPS location measurement and the received information of the nearby access points in the storage unit; after the receiving, extracting location coordinates of the nearby access points from the storage unit; and calculating a location coordinate of the specific communication terminal using the extracted location coordinates of the nearby access points, wherein the calculating of the location coordinate of the specific communication terminal comprises: wherein the calculating of the barycentric coordinate comprises: