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Merge remote-tracking branch 'origin/fix_for_tx_wait_for_dlsch' into integration_2025_w17 (!3405)

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Fix for NR UE DLSCH decoding barrier in case of no feedback

In !3291 NTN CI RFsim test fails with the UE being stuck. After some
investigation, this seems to be caused by the scenario where there is no
feedback for DLSCH. In that case there is no need to wait for DLSCH
being completed before generating feedback (there is no feedback).
This commit is contained in:
Robert Schmidt
2025-04-28 17:46:11 +02:00
parent d46fb4fc68 799c19b229
commit af7ce8e9b1
3 changed files with 19 additions and 11 deletions
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6
executables/nr-ue.c
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@@ -722,8 +722,10 @@ static int UE_dl_preprocessing(PHY_VARS_NR_UE *UE,
sampleShift = pbch_pdcch_processing(UE, proc, phy_data);
if (phy_data->dlsch[0].active && phy_data->dlsch[0].rnti_type == TYPE_C_RNTI_) {
// indicate to tx thread to wait for DLSCH decoding
const int ack_nack_slot = (proc->nr_slot_rx + phy_data->dlsch[0].dlsch_config.k1_feedback) % UE->frame_parms.slots_per_frame;
tx_wait_for_dlsch[ack_nack_slot]++;
if (phy_data->dlsch[0].dlsch_config.k1_feedback) { // if feedback is 0 there is no HARQ associated with this DLSCH
const int ack_nack_slot = (proc->nr_slot_rx + phy_data->dlsch[0].dlsch_config.k1_feedback) % UE->frame_parms.slots_per_frame;
tx_wait_for_dlsch[ack_nack_slot]++;
}
}
}
if (fp->frame_type == FDD || !dl_slot) {