canmove, Confirmed users
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m (AGPS cleanup) |
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So, to recap -- some pieces are NOT under Mozilla's control and one of them is the geolocation configuration. It is completely up to the chip manufacturers and OEM to correctly configure a-gps. | So, to recap -- some pieces are NOT under Mozilla's control and one of them is the geolocation configuration. It is completely up to the chip manufacturers and OEM to correctly configure a-gps. | ||
== | ==Details== | ||
The | The geolocation provider use a few different method to compute location based on the environment: | ||
1)Satellite - Uses GPS Receiver to locate the device. | |||
2)Network methods - Uses nearby WiFi Access points and Cell towers | |||
So, to recap – Mozilla does not ship binaries. Mozilla does not configure Modems. If you are shipping devices, you must ensure that a-gps is configured properly. Configuration of a-gps is completely outside of the scope of Firefox OS. | These two methods complement each other to improve geolocation | ||
Availability: GPS works well in open sky, where Network methods are not as accurate. Network methods work well in deep indoor, where GPS does not work well. Having both increases availability. | |||
Time To First Fix: GPS is accurate, and take some time, while Network is coarse and is faster. Network location can be used by GPS to opti | |||
===AGPS=== | |||
For the Satellite fixes, GPS is used. To shorten the searching for satellites, methods for assistance are used. Some of them are: | |||
1) SUPL: Standardized | |||
2) Proprietary Extended Ephemeris solutions: GPS HW providers implement optimizations. | |||
So, to recap – Mozilla does not ship binaries. Mozilla does not configure Modems. If you are shipping devices, you must ensure that a-gps is configured properly with the HW provider. Configuration of a-gps is completely outside of the scope of Firefox OS. |