thoughts on A-GPS offline

Al Johnson openmoko at
Wed Feb 18 17:49:24 CET 2009

On Wednesday 18 February 2009, Cédric Berger wrote:
> On Wed, Feb 18, 2009 at 16:52, Helge Hafting <helge.hafting at> wrote:
> > Timo Juhani Lindfors wrote:
> >> mqy <meng.qingyou at> writes:
> >>> It is not a problem that user account is required when download u-blox
> >>> online aiding data.
> >>
> >> It is a problem since u-blox might go out of business and you might
> >> not want to tell them where you are all time. Their server also might
> >> be down. There are plenty of reasons to remove dependency to any
> >> single party.
> >
> > It is possible to start an open service, with mirrors. Interested people
> > can set their freerunners to send in good aiding data when they have it
> > (i.e. when using the gps and a network is available.)
> Infos downloaded from u-blox are only valid for some time. So if
> server is down for more than just a short time, it won't help much.
> And I did not check but not I am not sure u-blox terms of service
> allow to redistribute...

I may be misunderstanding the suggestion, but I don't think it had anything to 
do with data from ublox. The suggestion was to use data sent by other 
freerunner users instead of the data supplied by ublox. 

More information about the community mailing list