TBF differences for Uplink and Downlink

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://lists.osmocom.org/hyperkitty/list/osmocom-net-gprs@lists.osmocom.org/.

Andreas Eversberg andreas at eversberg.eu
Thu Oct 17 10:03:23 UTC 2013


Holger Hans Peter Freyther wrote:
> In the first code. Why is tlli_valid only checked for the UL TBF
> and not the downlink one?
>   
there is a "one phase access", where devices request a channel for
uplink TBF, but we don't know the TLLI until we get a valid RLC/MAC
block. for every downlink TBF we know the TLLI for sure, because it is
contained in the LLC data frame from SGSN.




More information about the osmocom-net-gprs mailing list