| 摘要 |
Methods, program products, and systems for managing a location database are described. A server can receive location information from location-aware mobile devices (e.g., GPS-enabled devices) located within a communication range of access points of a wireless communications network. The server can calculate average geographic locations using the received locations for each access point. Based on the average geographic locations, the server can assign the access points to cells of a geographic grid. The server can filter the access points in each cell based on popularity, stability, longevity, and freshness of the access points and the received data. When a second mobile device connects to an access point in a cell, the location of the second mobile device can be determined based on locations of the access points in the cell and in neighboring cells. |
