thoughts on A-GPS offline

Cédric Berger cedric.berger74 at
Wed Feb 18 17:02:36 CET 2009

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...

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