Help needed with GSM Geolocation without GPS
neil at ossau.homelinux.net
Tue Nov 6 19:52:22 CET 2012
robin <spielraum at web.de> writes:
>> Sounds good. I wonder what the trade-off is between implementing
>> something like this from scratch for GTA04, and trying to integrate an
>> existing partial solution such as GeoClue?
> hi neil,
> as far as I understand geoclue comprises a communication between a provider
> and your phone, so that would mean data transfer via the modem. This would
> certainly be one solution, but it would be nice if the user could choose
> a) GSM -> Provider -> Location
> b) GSM -> offline database -> Location (saves money and battery(?))
> I don't know if geoclue can be easily extended to use the cells.txt.gz file
> as an alternative input. That would be nice, because then one could actually
> choose between a) and b).
Last time I looked, my impression was that the geoclue architecture
should support offline - but I'm not sure.
> Could you point me in the right direction on how to extract the cell and
> neighbouring cell ids/signal strengths in qtmoko.
I believe the code that sources this information is
src/libraries/qtopiaphone/qnetworkregistration.cpp: look for the lines
in that file that say "emit locationChanged".
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