GPS time synch

[Cedric BAIL]

On Tuesday 20 February 2007 14:39, Perry E. Metzger wrote:
> Michael 'Mickey' Lauer <mickey at openmoko.org> writes:
> >> On Mon, Feb 19, 2007 at 11:47:23PM +1100, Mark Chandler wrote:
> >>> Would it be possible to keep the Neo's internal clock accurate using
> >>> time stamps from GPS information?
> >>
> >> yes.
> >
> > That is only during GPS being powered up, of course. We probably don't
> > want it to be powered unconditionally, since it drains quite some
> > power.
>
> Out of curiosity, how bad is the GPS power drain? There are
> applications I would like (such as automatically turning the ringer
> back on when the phone is inside my home -- I always forget to do that
> and miss calls) that require location information at reasonably
> frequent intervals...

For that kind of use, the CellID could be used to know if your are near your 
home, and you can power up the GPS at this time to know more precisely where 
you are.
	I wonder if we can retrieve from the GSM the current preferred CellID, or the 
list of available CellID and other info regarding our current location inside 
the GSM network (without activating GPS, we can learn in which country we are 
with some of this information).

Cedric