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Inline nr_get_tbs_dl()

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This commit is contained in:
Robert Schmidt
2020-09-30 14:52:59 +02:00
parent 9b2be0a1f6
commit fc179f396c
1 changed files with 54 additions and 6 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
+54 -6
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@@ -420,9 +420,9 @@ int nr_fill_nfapi_dl_pdu(int Mod_idP,
nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdcch_pdu;
nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdsch_pdu;
int TBS;
int bwp_id=1;
int UE_id = 0;
const int nrOfLayers = 1;
NR_UE_list_t *UE_list = &RC.nrmac[Mod_idP]->UE_list;
@@ -471,7 +471,7 @@ int nr_fill_nfapi_dl_pdu(int Mod_idP,
pdsch_pdu_rel15->mcsTable[0] = 0;
pdsch_pdu_rel15->rvIndex[0] = nr_rv_round_map[UE_list->UE_sched_ctrl[UE_id].harq_processes[current_harq_pid].round];
pdsch_pdu_rel15->dataScramblingId = *scc->physCellId;
pdsch_pdu_rel15->nrOfLayers = 1;
pdsch_pdu_rel15->nrOfLayers = nrOfLayers;
pdsch_pdu_rel15->transmissionScheme = 0;
pdsch_pdu_rel15->refPoint = 0; // Point A
UE_list->mac_stats[UE_id].dlsch_rounds[UE_list->UE_sched_ctrl[UE_id].harq_processes[current_harq_pid].round]++;
@@ -612,11 +612,59 @@ int nr_fill_nfapi_dl_pdu(int Mod_idP,
pdcch_pdu_rel15->StartSymbolIndex,
pdcch_pdu_rel15->DurationSymbols);
int x_Overhead = 0; // should be 0 for initialBWP
nr_get_tbs_dl(&dl_tti_pdsch_pdu->pdsch_pdu,x_Overhead,pdsch_pdu_rel15->numDmrsCdmGrpsNoData,0);
const uint16_t N_PRB_oh = 0; // overhead should be 0 for initialBWP
uint8_t N_PRB_DMRS;
if (pdsch_pdu_rel15->dmrsConfigType == NFAPI_NR_DMRS_TYPE1) {
// if no data in dmrs cdm group is 1 only even REs have no data
// if no data in dmrs cdm group is 2 both odd and even REs have no data
N_PRB_DMRS = pdsch_pdu_rel15->numDmrsCdmGrpsNoData * 6;
} else {
N_PRB_DMRS = pdsch_pdu_rel15->numDmrsCdmGrpsNoData * 4;
}
const uint8_t N_sh_symb = pdsch_pdu_rel15->NrOfSymbols;
const uint8_t table_idx = 0;
const uint16_t R = nr_get_code_rate_dl(mcs, table_idx);
const uint8_t Qm = nr_get_Qm_dl(mcs, table_idx);
const uint32_t TBS =
nr_compute_tbs(Qm,
R,
rbSize,
N_sh_symb,
N_PRB_DMRS, // FIXME // This should be multiplied by the
// number of dmrs symbols
N_PRB_oh,
0 /* tb_scaling */,
nrOfLayers)
>> 3;
pdsch_pdu_rel15->targetCodeRate[0] = R;
pdsch_pdu_rel15->qamModOrder[0] = Qm;
pdsch_pdu_rel15->TBSize[0] = TBS;
// I don't know why the following is not needed, but in this case we don't
// need additional calculations:
const uint16_t N_RE_prime = NR_NB_SC_PER_RB * N_sh_symb - N_PRB_DMRS - N_PRB_oh;
LOG_D(MAC,
"N_RE_prime %d for %d symbols %d DMRS per PRB and %d overhead\n",
N_RE_prime,
N_sh_symb,
N_PRB_DMRS,
N_PRB_oh);
//pdsch_pdu_rel15->nb_mod_symbols = N_RE_prime*pdsch_pdu_rel15->n_prb*pdsch_pdu_rel15->nb_codewords;
pdsch_pdu_rel15->mcsTable[0] = table_idx;
LOG_D(MAC,
"TBS %d bytes: N_PRB_DMRS %d N_sh_symb %d N_PRB_oh %d R %d Qm %d table "
"%d nb_symbols %d\n",
TBS,
N_PRB_DMRS,
N_sh_symb,
N_PRB_oh,
R,
Qm,
table_idx,
N_RE_prime * pdsch_pdu_rel15->rbSize * pdsch_pdu_rel15->NrOfCodewords);
// Hardcode it for now
TBS = dl_tti_pdsch_pdu->pdsch_pdu.pdsch_pdu_rel15.TBSize[0];
if (UE_list->UE_sched_ctrl[UE_id].harq_processes[current_harq_pid].round==0)
UE_list->mac_stats[UE_id].dlsch_total_bytes += TBS;