Managing a location database for network-based positioning system
US8433334B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Aug 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, program products, and systems for managing a location database are described. A server computer 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 computer can calculate average geographic locations using the received locations for each access point. Based on the average geographic locations, the server computer can assign the access points to cells of a geographic grid. The server computer can filter the access points in each cell based on popularity, stability, longevity, and freshness of the access point and the received data. When a second mobile device connects to an access point in a cell, the server computer can transmit locations of the access points in the cell and in neighboring cells to the second mobile device such that a location of the second mobile device can be estimated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.