On Mon, Apr 21, 2008 at 05:59:29PM +0800, [EMAIL PROTECTED] wrote: > Am Mo 21. April 2008 schrieb Werner Almesberger: > > [EMAIL PROTECTED] wrote: > > > For many countries there are ageold databases created by hobbyists doing > > > antenna-spotting. In Germany, carrier O2 sends quite exact Gauss-Krueger > > > coordinates on CBC 221 for each of his stations. > > > > Okay, that's good. So we can have a comprehensive geographical database > > we can put our "GSM n-space" in relation to. (Although no motivation > > was ever stated, I'm assuming here that the goal of the whole exercise > > is to avoid using GPS. Thus we can't correlate vectors we measure in > > GSM n-space to 2D or 3D real-world vectors we measure with GPS.) > > > > Is there something like openstreetmap with these antenna locations or > > does one have to hunt and gather from scattered repositories ? > > Dunno...
At least in Germany the location of the cellular towers (especially combined with the information if they're GPRS, EDGE, UMTS or HSDPA) is considered a trade secret by the operator. If you create free databases with that kind of stuff, be sure you have sufficient stack to fight the legal battles. Cheers, -- - Harald Welte <[EMAIL PROTECTED]> http://openmoko.org/ ============================================================================ Software for the world's first truly open Free Software mobile phone
