TBF differences for Uplink and Downlink

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.

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