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fix buggy TBS function for SIB and set additional candidate for common search space

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This commit is contained in:
francescomani
2025-04-14 10:15:50 +02:00
parent 04213f2981
commit 6af70bd4b9
2 changed files with 56 additions and 55 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_bch.c
+56 -54
View File
@@ -274,72 +274,71 @@ void schedule_nr_mib(module_id_t module_idP, frame_t frameP, slot_t slotP, nfapi
}
}
uint32_t get_tbs(NR_Type0_PDCCH_CSS_config_t *type0_PDCCH_CSS_config,
NR_sched_pdsch_t *pdsch,
uint32_t num_total_bytes,
uint16_t *vrb_map)
static uint32_t get_tbs_bch(NR_Type0_PDCCH_CSS_config_t *type0_PDCCH_CSS_config,
NR_sched_pdsch_t *pdsch,
uint32_t num_total_bytes,
uint16_t *vrb_map)
{
NR_tda_info_t *tda_info = &pdsch->tda_info;
const uint16_t bwpSize = type0_PDCCH_CSS_config->num_rbs;
int rbStart = type0_PDCCH_CSS_config->cset_start_rb;
// Calculate number of PRB_DMRS
uint8_t N_PRB_DMRS = pdsch->dmrs_parms.N_PRB_DMRS;
uint16_t dmrs_length = pdsch->dmrs_parms.N_DMRS_SLOT;
LOG_D(MAC, "dlDmrsSymbPos %x\n", pdsch->dmrs_parms.dl_dmrs_symb_pos);
int mcsTableIdx = 0;
int rbSize = 0;
uint32_t TBS = 0;
do {
if (rbSize < bwpSize && !(vrb_map[rbStart + rbSize] & SL_to_bitmap(tda_info->startSymbolIndex, tda_info->nrOfSymbols)))
rbSize++;
const uint16_t slbitmap = SL_to_bitmap(tda_info->startSymbolIndex, tda_info->nrOfSymbols);
int bwpSize = type0_PDCCH_CSS_config->num_rbs;
int bwpStart = type0_PDCCH_CSS_config->cset_start_rb;
int rbStop = bwpSize - 1;
int rbStart = 0;
uint16_t rbSize = 0;
while (rbStart < rbStop) {
if (vrb_map[rbStart + bwpStart] & slbitmap)
rbStart++;
else {
if (pdsch->mcs < 10)
pdsch->mcs++;
else
break;
}
TBS = nr_compute_tbs(nr_get_Qm_dl(pdsch->mcs, mcsTableIdx),
nr_get_code_rate_dl(pdsch->mcs, mcsTableIdx),
rbSize,
tda_info->nrOfSymbols,
N_PRB_DMRS * dmrs_length,
0,
0,
1)
>> 3;
} while (TBS < num_total_bytes);
int max_rbSize = 0;
while (rbStart + max_rbSize <= rbStop && !(vrb_map[rbStart + max_rbSize + bwpStart] & slbitmap))
max_rbSize++;
if (TBS < num_total_bytes) {
for (int rb = 0; rb < bwpSize; rb++)
LOG_I(NR_MAC, "vrb_map[%d] %x\n", rbStart + rb, vrb_map[rbStart + rb]);
bool res = false;
while (res == false && pdsch->mcs < 10) {
res = nr_find_nb_rb(nr_get_Qm_dl(pdsch->mcs, mcsTableIdx),
nr_get_code_rate_dl(pdsch->mcs, mcsTableIdx),
1, // no transform precoding for DL
1, // single layer
tda_info->nrOfSymbols,
pdsch->dmrs_parms.N_PRB_DMRS * pdsch->dmrs_parms.N_DMRS_SLOT,
num_total_bytes,
1, // min_rbSize
max_rbSize,
&TBS,
&rbSize);
if (!res)
pdsch->mcs++;
}
break;
}
}
AssertFatal(
TBS >= num_total_bytes,
"Couldn't allocate enough resources for %d bytes in SIB PDSCH (rbStart %d, rbSize %d, bwpSize %d SLmask %x - [%d,%d])\n",
num_total_bytes,
rbStart,
rbSize,
bwpSize,
SL_to_bitmap(tda_info->startSymbolIndex, tda_info->nrOfSymbols),
tda_info->startSymbolIndex,
tda_info->nrOfSymbols);
AssertFatal(TBS >= num_total_bytes,
"Couldn't allocate enough resources for %d bytes in SIB PDSCH (rbStart %d, rbSize %d, bwpSize %d)\n",
num_total_bytes,
rbStart,
rbSize,
bwpSize);
pdsch->rbSize = rbSize;
pdsch->rbStart = 0;
pdsch->rbStart = rbStart;
LOG_D(
NR_MAC,
"mcs=%i, startSymbolIndex = %i, nrOfSymbols = %i, rbSize = %i, TBS = %i, dmrs_length %d, N_PRB_DMRS = %d, mappingtype = %d\n",
pdsch->mcs,
tda_info->startSymbolIndex,
tda_info->nrOfSymbols,
pdsch->rbSize,
TBS,
dmrs_length,
N_PRB_DMRS,
tda_info->mapping_type);
LOG_D(NR_MAC,
"mcs=%i, startSymbolIndex = %i, nrOfSymbols = %i, rbSize = %i, TBS = %i, dmrs_length %d, N_PRB_DMRS = %d, mappingtype = %d\n",
pdsch->mcs,
tda_info->startSymbolIndex,
tda_info->nrOfSymbols,
rbSize,
TBS,
pdsch->dmrs_parms.N_DMRS_SLOT,
N_PRB_DMRS,
tda_info->mapping_type);
return TBS;
}
@@ -382,7 +381,10 @@ static uint32_t schedule_control_sib1(module_id_t module_id,
AssertFatal(gNB_mac->sched_ctrlCommon->cce_index >= 0, "Could not find CCE for coreset0\n");
uint32_t TBS = get_tbs(type0_PDCCH_CSS_config, &gNB_mac->sched_ctrlCommon->sched_pdsch, gNB_mac->sched_ctrlCommon->num_total_bytes, vrb_map);
uint32_t TBS = get_tbs_bch(type0_PDCCH_CSS_config,
&gNB_mac->sched_ctrlCommon->sched_pdsch,
gNB_mac->sched_ctrlCommon->num_total_bytes,
vrb_map);
// Mark the corresponding RBs as used
fill_pdcch_vrb_map(gNB_mac,
@@ -755,7 +757,7 @@ static void other_sib_sched_control(module_id_t module_idP,
uint16_t *vrb_map = cc->vrb_map[beam.idx];
uint8_t *sib_bcch_pdu = cc->other_sib_bcch_pdu[payload_idx];
int num_total_bytes = cc->other_sib_bcch_length[payload_idx];
uint32_t TBS = get_tbs(type0_PDCCH_CSS_config, &sched_pdsch_otherSI, num_total_bytes, vrb_map);
uint32_t TBS = get_tbs_bch(type0_PDCCH_CSS_config, &sched_pdsch_otherSI, num_total_bytes, vrb_map);
for (int rb = 0; rb < sched_pdsch_otherSI.rbSize; rb++) {
vrb_map[rb + type0_PDCCH_CSS_config->cset_start_rb] |= SL_to_bitmap(tda_info.startSymbolIndex, tda_info.nrOfSymbols);
openair2/RRC/NR/nr_rrc_config.c
-1
View File
@@ -277,7 +277,6 @@ NR_SearchSpace_t *rrc_searchspace_config(bool is_common,
ss->nrofCandidates->aggregationLevel4 = num_agg_level_candidates[PDCCH_AGG_LEVEL4];
ss->nrofCandidates->aggregationLevel8 = num_agg_level_candidates[PDCCH_AGG_LEVEL8];
ss->nrofCandidates->aggregationLevel16 = num_agg_level_candidates[PDCCH_AGG_LEVEL16];
ss->searchSpaceType = calloc(1,sizeof(*ss->searchSpaceType));
if (is_common) {
ss->searchSpaceType->present = NR_SearchSpace__searchSpaceType_PR_common;