Hi,
AFAIR it's possible to run osmocom-bb "mobile" (GSM) and "modem" (GPRS)
apps against that osmo-trx-ms with a B210/BladeRF underneath as an SDR.
It is related to work done with this grant:
https://www.ardc.net/apply/grants/2021-grants/grant-paving-the-way-to-use-gsm-gprs-technology-on-amateur-radio-bands/
https://osmocom.org/projects/cellular-infrastructure/wiki/GSM_in_70cm_HAM_band
Regarding GPRS, I was involved at the time with implementing the upper
GPRS layers (RLC/MAC, LLC, etc.), which can be found in both osmocom-bb
and libosmo-gprs git repositories.
IIRC only minimal support (1 TS TBF GPRS) is currently implemented, but
it can already be used to tx/rx data over it with the "modem" osmocom-bb
app.
You can find the GPRS architecture here:
https://osmocom.org/projects/baseband/wiki/MS-side_GPRS
I'm not able to find more public information rather than:
https://osmocom.org/search?utf8=%E2%9C%93&scope=&q=MS-SDR
Regards,
--
- Pau Espin Pedrol <[email protected]> http://www.sysmocom.de/
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