A novel feature would be direct connections to other OsmocomBB handsets that are in range. So not only handsets communicate with towers but a handset also listens to announcements of compatible handsets within range. Reason is to have free communication between different buildings, floors, rooms.
22.01.2012 10:33, alphaflux пишет:
A novel feature would be direct connections to other OsmocomBB handsets that are in range. So not only handsets communicate with towers but a handset also listens to announcements of compatible handsets within range. Reason is to have free communication between different buildings, floors, rooms.
Sorry to disappoint but that would require hardware modifications similar to those made for traffic interception by Karsten et all. Normally phone do not see uplink radio from other phone because of antennae filters.
Although I plan to make such modifications to my test phone anyway :)
cheers, Max.
suraev@stud.ntnu.no wrote:
Sorry to disappoint but that would require hardware modifications similar to those made for traffic interception by Karsten et all. Normally phone do not see uplink radio from other phone because of antennae filters.
hi,
why should two phones use uplink frequency to communicate directly together? why not using downlink frequency? iirc, a phone can transmit on downlink, since there are no filters on tx side.
25.01.2012 21:34, Andreas Eversberg пишет:
why should two phones use uplink frequency to communicate directly together? why not using downlink frequency? iirc, a phone can transmit on downlink, since there are no filters on tx side.
Sounds great if a) phone hw is powerful enough to run stripped down version of bts (osmobts?) b) we do not interfere with transmissions of regular bts
And we have to adopt gsm stack for p2p purpose - add some sot of peer discovery at the very least.
On Sun, Jan 22, 2012 at 10:33 AM, alphaflux wrote:
A novel feature would be direct connections to other OsmocomBB handsets that are in range. So not only handsets communicate with towers but a handset also listens to announcements of compatible handsets within range. Reason is to have free communication between different buildings, floors, rooms.
Sounds a fair bit like what these folks are doing with WiFi:
On Thu, Jan 26, 2012 at 07:30:21AM +0800, Paul Wise wrote:
Sounds a fair bit like what these folks are doing with WiFi:
Well, with WiFi that's not sooo difficult, right? Providing an WiFi access point with a normal NIC is mostly just a mode of the normal driver and additionally there is hostapd. Mesh networking is already nicely implemented. Is there anything great in that project that I miss?
Kind regards -Alexander Huemer
baseband-devel@lists.osmocom.org
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Alexander Huemer -
alphaflux -
Andreas Eversberg -
Max.Suraev＠fairwaves.ru -
Paul Wise -
suraev＠stud.ntnu.no