Patent ID: 8478299

Claim:
A mobile device comprising: one or more interfaces for detecting location reference nodes in view of the mobile device; and a client module to send a location query to a location database, the location query comprising node data identifying the location reference nodes in view of the mobile device, wherein the client module to receive positioning information for providing a coarse location of the mobile device from the location database in response to the location query, the positioning information based on correlated position data and node data received from one or more client devices having Global Positioning System (GPS) position determination capability and configured to report position data and node data for location reference nodes in view, a probabilistic weight applied to the positioning information based on a type of radio used within each location reference node in view, wherein the mobile device is configured to display a map in response to the positioning information and to accept user input to the map, the user input is sent to the location database for adjusting the positioning information.