If we NACK without SOstart/SOend then the other end of the RLC channel will consider all the bytes as NACKed and will have to resend them all.
If another status is then reported before all the bytes are sent, and because we don't use SOstart/SOend this status will NACK all the bytes again, then all the bytes are to be sent again.
And the cycle repeats. It will end with a max retx reached (which triggers RLF, Radio Link Failure).
MR1010 : NR UE: Fix for error message - no active DLSCH
- Fixes for the following error message at UE: [PHY] [UE][FATAL] nr_slot_rx 1: no active DLSCH
MR994 : Cleanup softmodem main
- Introduces --dlsch-parallel command line option to set the number of threads for dlsch decoding. If set to 0 (default) no parallelization.
- Some cleanup in tracing and in nr-uesoftmodem.c data.
MR999 : NR FR2 RA
- Temporary Fix of RA procedure for FR2 (both gNB and UE)
- Fixes in gold sequence initialization at UE
- Moves 2nd downlink to slot 3 instead of 2 to avoid clash with UL DCI (only 1 candidate per slot in FR2 currently)
MR988 : SIB1
Initial implementation of SIB1
- enhancement of DL indication flow for Msg2 (RAR)
- merging interface procedures to handle DLSCH and RAR together
- better separation of MAC and PHY functionalities
- cleanup of double ambiguous functions to process RAR
- merging functions to process TA command into the ue_ta_procedures function
- enhancement of logging and formatting in the process
- moved fill_dl_indication to phy procedures
- introduced a new function to fill the RX indication
- replaced redundant configuration code with the fill functions
- extended the function to fill the rx indication
- handling different dl pdus types
- cleanup of redundant code
- moved init code to new function init_RA
- moved relevant variables from MAC to prach_resources
- cleanup of unused struct members
- other minor fixes
- Moved code for SSB to RACH mapping config to new function
- Moved RA preambles configuration routine to new function
- Removed irrelevant arguments to nr_get_prach_resources
- turned some struct members and local vars into global vars
- added checks on the RA Type as per TS 38.321 clause 5.1.1
- minor cleanups
- currently only 4-step RA is available
Thomas Schlichter