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Use MCS 9 for Msg2 to avoid issues with the LDPC decoder

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- LDPC decoder does not support lower MCS, therefore MCS 9 has been selected
  for the Msg2 configuration.
- This is done only in do-ra mode, in order to prevent any fallout on the
  current the configuration used for the operation with the commercial UE
This commit is contained in:
cig
2020-07-02 12:30:57 +02:00
parent 12e5fe3399
commit 79a655d47e
1 changed files with 5 additions and 1 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+5 -1
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@@ -590,7 +590,11 @@ void nr_generate_Msg2(module_id_t module_idP,
LOG_D(MAC, "[RAPROC] Scheduling common search space DCI type 1 dlBWP BW %d\n", dci10_bw); LOG_D(MAC, "[RAPROC] Scheduling common search space DCI type 1 dlBWP BW %d\n", dci10_bw);
mcsIndex = 0; // Qm>2 not allowed for RAR // Qm>2 not allowed for RAR
if (get_softmodem_params()->do_ra)
mcsIndex = 9;
else
mcsIndex = 0;
pdsch_pdu_rel15->pduBitmap = 0; pdsch_pdu_rel15->pduBitmap = 0;
pdsch_pdu_rel15->rnti = RA_rnti; pdsch_pdu_rel15->rnti = RA_rnti;