Wireless Assisted GPS
When WAG is activated the following steps occur
- Network or User Application sends an estimate of the location of the mobile device to the Location Server
- The LS responds with GPS acquisition assistance
- The mobile device takes a “snapshot” of the GPS signals, calculates the distance to all the satellites in view and sends this information back to the LS
- The LS performs error corrections and calculates the mobile device’s precise latitude, longitude, altitude, speed, and bearing