Location beacon database and server, method of building location beacon database, and location based service using same

摘要

C /RPonbADCC/DER/1913_ I DOC-7/111/2I111 A system comprising: computer-implemented logic to derive position information for each of a plurality 5 of Wi-Fi access points in a geographic area having a radius on the order of miles, wherein the position information is derived at least in part from sets of data collected during a comprehensive traversal of the geographic area, each set of data including signal data characterizing one or more observed characteristics of a signal received from the Wi-Fi access point, and location data characterizing a location at which the one or more 10 characteristics of the signal received from the Wi-Fi access point was observed; and computer-implemented logic to store the derived position information in a non-transitory computer-readable medium.