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add safety check to avoid scheduling MSG4 ACK if there is less than 2 symbols in mixed slot

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(PUCCH for MSG4 ACK is 2 symbols)
This commit is contained in:
francescomani
2026-01-21 03:53:25 +01:00
parent 15bd09dd24
commit 9031b26cf8
1 changed files with 5 additions and 2 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_uci.c
+5 -2
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@@ -1150,8 +1150,8 @@ int nr_acknack_scheduling(gNB_MAC_INST *mac,
const int minfbtime = mac->radio_config.minRXTXTIME + NTN_gNB_Koffset;
const NR_UE_UL_BWP_t *ul_bwp = &UE->current_UL_BWP;
const int n_slots_frame = mac->frame_structure.numb_slots_frame;
const frame_structure_t *fs = &mac->frame_structure;
const int n_slots_frame = fs->numb_slots_frame;
NR_UE_sched_ctrl_t *sched_ctrl = &UE->UE_sched_ctrl;
NR_PUCCH_Config_t *pucch_Config = ul_bwp->pucch_Config;
@@ -1173,9 +1173,12 @@ int nr_acknack_scheduling(gNB_MAC_INST *mac,
const int pucch_slot = (slot + pdsch_to_harq_feedback[f] + NTN_gNB_Koffset) % n_slots_frame;
// check if the slot is UL
if (fs->frame_type == TDD) {
int mod_slot = pucch_slot % fs->numb_slots_period;
int mod_slot = get_slot_idx_in_period(pucch_slot, fs);
if (!is_ul_slot(mod_slot, fs))
continue;
const tdd_period_config_t *pc = &fs->period_cfg;
if (r_pucch >= 0 && is_mixed_slot(mod_slot, fs) && pc->tdd_slot_bitmap[mod_slot].num_ul_symbols < 2)
continue;
}
const int pucch_frame = (frame + ((slot + pdsch_to_harq_feedback[f] + NTN_gNB_Koffset) / n_slots_frame)) % MAX_FRAME_NUMBER;
// we store PUCCH resources according to slot, TDD configuration and size of the vector containing PUCCH structures