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L1 beam allocation from symbol bitmap

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This is required because CSI-RS may not be allocated in consecutive symbols within a slot
This commit is contained in:
francescomani
2024-11-14 08:41:14 +01:00
parent f54ca5714e
commit c0f2d24471
8 changed files with 23 additions and 45 deletions
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openair1/PHY/NR_TRANSPORT/nr_dci.c
+2 -2
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@@ -80,12 +80,12 @@ static void nr_generate_dci(PHY_VARS_gNB *gNB,
uint32_t cset_nsymb = pdcch_pdu_rel15->DurationSymbols;
int dci_idx = 0;
// multi-beam number (for concurrent beams)
int bitmap = SL_to_bitmap(cset_start_symb, pdcch_pdu_rel15->DurationSymbols);
int beam_nb = beam_index_allocation(dci_pdu->precodingAndBeamforming.prgs_list[0].dig_bf_interface_list[0].beam_idx,
&gNB->common_vars,
slot,
frame_parms->symbols_per_slot,
cset_start_symb,
pdcch_pdu_rel15->DurationSymbols);
bitmap);
LOG_D(NR_PHY_DCI, "pdcch: Coreset rb_offset %d, nb_rb %d BWP Start %d\n", rb_offset, n_rb, pdcch_pdu_rel15->BWPStart);
LOG_D(NR_PHY_DCI,
openair1/PHY/NR_TRANSPORT/nr_dlsch.c
+2 -2
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@@ -471,12 +471,12 @@ void nr_generate_pdsch(processingData_L1tx_t *msgTx, int frame, int slot)
start_meas(&gNB->dlsch_precoding_stats);
nfapi_nr_tx_precoding_and_beamforming_t *pb = &rel15->precodingAndBeamforming;
// beam number in multi-beam scenario (concurrent beams)
int bitmap = SL_to_bitmap(rel15->StartSymbolIndex, rel15->NrOfSymbols);
int beam_nb = beam_index_allocation(pb->prgs_list[0].dig_bf_interface_list[0].beam_idx,
&gNB->common_vars,
slot,
frame_parms->symbols_per_slot,
rel15->StartSymbolIndex,
rel15->NrOfSymbols);
bitmap);
c16_t **txdataF = gNB->common_vars.txdataF[beam_nb];
openair1/PHY/NR_TRANSPORT/nr_prach.c
+2 -6
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@@ -85,12 +85,8 @@ void nr_fill_prach(PHY_VARS_gNB *gNB, int SFN, int Slot, nfapi_nr_prach_pdu_t *p
int fapi_beam_idx = prach_pdu->beamforming.prgs_list[0].dig_bf_interface_list[0].beam_idx;
// TODO no idea how to compute final prach symbol here so for now we go til the end of the slot
int temp_nb_symbols = NR_NUMBER_OF_SYMBOLS_PER_SLOT - prach_pdu->prach_start_symbol;
prach->beam_nb = beam_index_allocation(fapi_beam_idx,
&gNB->common_vars,
Slot,
NR_NUMBER_OF_SYMBOLS_PER_SLOT,
prach_pdu->prach_start_symbol,
temp_nb_symbols);
int bitmap = SL_to_bitmap(prach_pdu->prach_start_symbol, temp_nb_symbols);
prach->beam_nb = beam_index_allocation(fapi_beam_idx, &gNB->common_vars, Slot, NR_NUMBER_OF_SYMBOLS_PER_SLOT, bitmap);
}
LOG_D(NR_PHY,"Copying prach pdu %d bytes to index %d\n", (int)sizeof(*prach_pdu), prach_id);
memcpy(&prach->pdu, prach_pdu, sizeof(*prach_pdu));
openair1/PHY/NR_TRANSPORT/nr_ulsch.c
+2 -6
View File
@@ -75,12 +75,8 @@ void nr_fill_ulsch(PHY_VARS_gNB *gNB, int frame, int slot, nfapi_nr_pusch_pdu_t
ulsch->beam_nb = 0;
if (gNB->common_vars.beam_id) {
int fapi_beam_idx = ulsch_pdu->beamforming.prgs_list[0].dig_bf_interface_list[0].beam_idx;
ulsch->beam_nb = beam_index_allocation(fapi_beam_idx,
&gNB->common_vars,
slot,
NR_NUMBER_OF_SYMBOLS_PER_SLOT,
ulsch_pdu->start_symbol_index,
ulsch_pdu->nr_of_symbols);
int bitmap = SL_to_bitmap(ulsch_pdu->start_symbol_index, ulsch_pdu->nr_of_symbols);
ulsch->beam_nb = beam_index_allocation(fapi_beam_idx, &gNB->common_vars, slot, NR_NUMBER_OF_SYMBOLS_PER_SLOT, bitmap);
}
ulsch->frame = frame;
ulsch->slot = slot;
openair1/PHY/NR_TRANSPORT/pucch_rx.c
+2 -6
View File
@@ -75,12 +75,8 @@ void nr_fill_pucch(PHY_VARS_gNB *gNB,
pucch->beam_nb = 0;
if (gNB->common_vars.beam_id) {
int fapi_beam_idx = pucch_pdu->beamforming.prgs_list[0].dig_bf_interface_list[0].beam_idx;
pucch->beam_nb = beam_index_allocation(fapi_beam_idx,
&gNB->common_vars,
slot,
NR_NUMBER_OF_SYMBOLS_PER_SLOT,
pucch_pdu->start_symbol_index,
pucch_pdu->nr_of_symbols);
int bitmap = SL_to_bitmap(pucch_pdu->start_symbol_index, pucch_pdu->nr_of_symbols);
pucch->beam_nb = beam_index_allocation(fapi_beam_idx, &gNB->common_vars, slot, NR_NUMBER_OF_SYMBOLS_PER_SLOT, bitmap);
}
memcpy((void *)&pucch->pucch_pdu, (void *)pucch_pdu, sizeof(nfapi_nr_pucch_pdu_t));
LOG_D(PHY,
openair1/PHY/NR_TRANSPORT/srs_rx.c
+2 -6
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@@ -57,13 +57,9 @@ void nr_fill_srs(PHY_VARS_gNB *gNB, frame_t frame, slot_t slot, nfapi_nr_srs_pdu
srs->active = true;
srs->beam_nb = 0;
if (gNB->common_vars.beam_id) {
int bitmap = SL_to_bitmap(srs_pdu->time_start_position, 1 << srs_pdu->num_symbols);
int fapi_beam_idx = srs_pdu->beamforming.prgs_list[0].dig_bf_interface_list[0].beam_idx;
srs->beam_nb = beam_index_allocation(fapi_beam_idx,
&gNB->common_vars,
slot,
NR_NUMBER_OF_SYMBOLS_PER_SLOT,
srs_pdu->time_start_position,
1 << srs_pdu->num_symbols);
srs->beam_nb = beam_index_allocation(fapi_beam_idx, &gNB->common_vars, slot, NR_NUMBER_OF_SYMBOLS_PER_SLOT, bitmap);
}
memcpy((void *)&srs->srs_pdu, (void *)srs_pdu, sizeof(nfapi_nr_srs_pdu_t));
break;
openair1/SCHED_NR/phy_procedures_nr_gNB.c
+10 -11
View File
@@ -43,19 +43,16 @@
//#define DEBUG_RXDATA
//#define SRS_IND_DEBUG
int beam_index_allocation(int fapi_beam_index,
NR_gNB_COMMON *common_vars,
int slot,
int symbols_per_slot,
int start_symbol,
int nb_symbols)
int beam_index_allocation(int fapi_beam_index, NR_gNB_COMMON *common_vars, int slot, int symbols_per_slot, int bitmap_symbols)
{
if (!common_vars->beam_id)
return 0;
int idx = -1;
for (int j = 0; j < common_vars->num_beams_period; j++) {
for (int i = start_symbol; i < start_symbol + nb_symbols; i++) {
for (int i = 0; i < symbols_per_slot; i++) {
if (((bitmap_symbols >> i) & 0x01) == 0)
continue;
int current_beam = common_vars->beam_id[j][slot * symbols_per_slot + i];
if (current_beam == -1 || current_beam == fapi_beam_index)
idx = j;
@@ -68,8 +65,10 @@ int beam_index_allocation(int fapi_beam_index,
break;
}
AssertFatal(idx >= 0, "Couldn't allocate beam ID %d\n", fapi_beam_index);
for (int j = start_symbol; j < start_symbol + nb_symbols; j++)
common_vars->beam_id[idx][slot * symbols_per_slot + j] = fapi_beam_index;
for (int j = 0; j < symbols_per_slot; j++) {
if (((bitmap_symbols >> j) & 0x01))
common_vars->beam_id[idx][slot * symbols_per_slot + j] = fapi_beam_index;
}
LOG_D(PHY, "Allocating beam %d in slot %d\n", idx, slot);
return idx;
}
@@ -129,12 +128,12 @@ void nr_common_signal_procedures(PHY_VARS_gNB *gNB, int frame, int slot, nfapi_n
c16_t ***txdataF = gNB->common_vars.txdataF;
int txdataF_offset = slot * fp->samples_per_slot_wCP;
// beam number in a scenario with multiple concurrent beams
int bitmap = SL_to_bitmap(ssb_start_symbol, 4); // 4 ssb symbols
int beam_nb = beam_index_allocation(pb->prgs_list[0].dig_bf_interface_list[0].beam_idx,
&gNB->common_vars,
slot,
fp->symbols_per_slot,
ssb_start_symbol,
4); // 4 ssb symbols
bitmap);
nr_generate_pss(&txdataF[beam_nb][0][txdataF_offset], gNB->TX_AMP, ssb_start_symbol, cfg, fp);
nr_generate_sss(&txdataF[beam_nb][0][txdataF_offset], gNB->TX_AMP, ssb_start_symbol, cfg, fp);
openair1/SCHED_NR/sched_nr.h
+1 -6
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@@ -47,10 +47,5 @@ void feptx_prec(RU_t *ru,int frame_tx,int tti_tx);
int nr_phy_init_RU(RU_t *ru);
void nr_phy_free_RU(RU_t *ru);
void clear_slot_beamid(PHY_VARS_gNB *gNB, int slot);
int beam_index_allocation(int fapi_beam_index,
NR_gNB_COMMON *common_vars,
int slot,
int symbols_per_slot,
int start_symbol,
int nb_symbols);
int beam_index_allocation(int fapi_beam_index, NR_gNB_COMMON *common_vars, int slot, int symbols_per_slot, int bitmap_symbols);
#endif