Hi,
My first reaction was one of sceptism, but according
to the people of
huwei it is do-able, no hardware changes needed, just some (major)
software rewrite.
With a single dongle ? Sounds weird.
The "client"/MS side of GSM have no duplexer but a TX/RX switch and a
BTS needs to be able to TX and RX at the same time.
(to be easily detectable by phones. It could 'possibly' work without
it and phone would stay camped onces they are there but it could take
several try for them to 'see' the network).
However with multiple dongle, that's something possible.
We are investigating the idea already to do it with osmocom-bb phones.
More to come in 2011 ...
Cheers,
Sylvain