This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://email@example.com/.Alexander Chemeris alexander.chemeris at gmail.com
Hi Kalle, BTS has to transmit constantly on it's main ARFCN, no matter do you make calls or just send SMS. So while you operate a single ARFCN you can't save power by employing only SMS. On the other hand, for SMS a single ARFCN would be enough to provide a good capacity, while support for calls would require a multi-ARFCN config which would be quite power hungry. Have you thought about using a balloon for carrying a BTS instead of dropping to a ground? This would give you much better coverage easily then on-the-ground installation. PS I think this would get more responses from the OpenBTS mailing list, then from OsmocomBB mailing list, as this is definitely a network-side question. On Wed, May 16, 2012 at 10:28 PM, Kalle Pietila <kalle.pietila at gmail.com> wrote: > Dear baseband enthusiasts, > > on SMOS project we had this crazy idea for catastrophe communications > in which cellular base stations would be miniaturized enough to be > airdropped into disaster zones. We felt that this might > be possible if all functionality except SMS was stripped from the base > stations (hence SMOS, SMS Our Souls). Most ideally such technology > would come in near cellphone size (excluding batteries), something > like osmocom's earlier "Phone acting as BTS" hackwork. > > We did not have the guts nor skills to start doing this by ourselves, > so we just published our findings and studies under Creative Commons > BY license. As we wish to keep this idea open to everyone, our > web-documentation would benefit on this regard from some more in-depth > HW-related analysis and suggestions (our team fell short on this > area). Once it's all published, it cannot be patented. I personally > see some humanitarian & karma-improving angle in doing it this way. > Helping human kinds in disaster should not be bound by patent laws. > > So I'm asking for constructive criticism and also offering possibility > to write some informal blogs about your views on > www.zygomatica.com/smos (with our team's editorial support) . At the > same time it should be noted that such technically oriented blog > writings at my friends' site zygomatica.com would likely reach 50 > readers at most. To put it more nicely, reaching the widest possible > audience is not our focus here anyways. > > My technical vision is presented at > http://www.zygomatica.com/wp-content/uploads/2012/04/SMOS6-Technical-goals-System-requirements-v10.pdf > .. and the full list of formal documents at end of > http://www.zygomatica.com/smos/ . The other provided background > material might be even more valuable to those that start considering > this idea more seriously. > > So, For instance, can stripping down the functionality just to > supporting SMS delivery bring down the power consumption in any > significant manner? > > Thanks and regards, > > Kalle Pietilä > > P.S. Mailed to this list as suggested by Harald. > -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru