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Split PBCH and PDCCH processing in NR UE

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This commit is contained in:
Bartosz Podrygajlo
2025-10-21 12:01:34 +02:00
parent e1b06d177e
commit 34052bf0ce
4 changed files with 49 additions and 43 deletions
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executables/nr-ue.c
+2 -1
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@@ -564,7 +564,8 @@ static int UE_dl_preprocessing(PHY_VARS_NR_UE *UE,
UE->if_inst->dl_indication(&dl_indication);
}
sampleShift = pbch_pdcch_processing(UE, proc, phy_data);
sampleShift = pbch_processing(UE, proc, phy_data);
pdcch_processing(UE, proc, phy_data);
if (phy_data->dlsch[0].active
&& (phy_data->dlsch[0].rnti_type == TYPE_C_RNTI_ || phy_data->dlsch[0].rnti_type == TYPE_RA_RNTI_)) {
// indicate to tx thread to wait for DLSCH decoding
openair1/SCHED_NR_UE/defs.h
+2 -1
View File
@@ -92,7 +92,8 @@
*/
void phy_procedures_nrUE_TX(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_tx_t *phy_data, c16_t **txp);
int pbch_pdcch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_t *phy_data);
int pbch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_t *phy_data);
void pdcch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_t *phy_data);
void pdsch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_t *phy_data);
openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
+43 -38
View File
@@ -1027,14 +1027,55 @@ static bool is_ssb_index_transmitted(const PHY_VARS_NR_UE *ue, const int index)
return ue->frame_parms.ssb_index == index;
}
int pbch_pdcch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_t *phy_data)
void pdcch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_t *phy_data)
{
TracyCZone(ctx);
NR_DL_FRAME_PARMS *fp = &ue->frame_parms;
NR_UE_PDCCH_CONFIG *phy_pdcch_config = &phy_data->phy_pdcch_config;
const uint32_t rxdataF_sz = ue->frame_parms.samples_per_slot_wCP;
__attribute__ ((aligned(32))) c16_t rxdataF[ue->frame_parms.nb_antennas_rx][rxdataF_sz];
uint8_t nb_symb_pdcch = phy_pdcch_config->nb_search_space > 0 ? phy_pdcch_config->pdcch_config[0].coreset.duration : 0;
int first_symb_pdcch = phy_pdcch_config->nb_search_space > 0 ? phy_pdcch_config->pdcch_config[0].coreset.StartSymbolIndex : 0;
int last_symb_pdcch = first_symb_pdcch + nb_symb_pdcch;
for (int l = first_symb_pdcch; l < last_symb_pdcch; l++) {
nr_slot_fep(ue, fp, proc->nr_slot_rx, l, rxdataF, link_type_dl, 0, ue->common_vars.rxdata);
}
// Hold the channel estimates in frequency domain.
int32_t pdcch_est_size = ((((fp->symbols_per_slot*(fp->ofdm_symbol_size+LTE_CE_FILTER_LENGTH))+15)/16)*16);
__attribute__((aligned(16))) c16_t pdcch_dl_ch_estimates[4 * fp->nb_antennas_rx][pdcch_est_size];
uint8_t dci_cnt = 0;
for(int n_ss = 0; n_ss<phy_pdcch_config->nb_search_space; n_ss++) {
for (int l = first_symb_pdcch; l < last_symb_pdcch; l++) {
// note: this only works if RBs for PDCCH are contigous!
nr_pdcch_channel_estimation(ue,
proc,
l,
&phy_pdcch_config->pdcch_config[n_ss].coreset,
fp->first_carrier_offset,
phy_pdcch_config->pdcch_config[n_ss].BWPStart,
pdcch_est_size,
pdcch_dl_ch_estimates,
rxdataF);
}
dci_cnt = dci_cnt + nr_ue_pdcch_procedures(ue, proc, pdcch_est_size, pdcch_dl_ch_estimates, phy_data, n_ss, rxdataF);
}
LOG_D(PHY, "[UE %d] Frame %d, nr_slot_rx %d: found %d DCIs\n", ue->Mod_id, proc->frame_rx, proc->nr_slot_rx, dci_cnt);
phy_pdcch_config->nb_search_space = 0;
TracyCZoneEnd(ctx);
if (ue->phy_sim_rxdataF)
memcpy(ue->phy_sim_rxdataF, rxdataF[0], sizeof(int32_t) * nb_symb_pdcch * ue->frame_parms.ofdm_symbol_size);
}
int pbch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_phy_data_t *phy_data)
{
TracyCZone(ctx, true);
int frame_rx = proc->frame_rx;
int nr_slot_rx = proc->nr_slot_rx;
int gNB_id = proc->gNB_id;
NR_DL_FRAME_PARMS *fp = &ue->frame_parms;
NR_UE_PDCCH_CONFIG *phy_pdcch_config = &phy_data->phy_pdcch_config;
int sampleShift = INT_MAX;
nr_ue_dlsch_init(phy_data->dlsch, NR_MAX_NB_LAYERS>4 ? 2:1, ue->max_ldpc_iterations);
@@ -1163,43 +1204,7 @@ int pbch_pdcch_processing(PHY_VARS_NR_UE *ue, const UE_nr_rxtx_proc_t *proc, nr_
} // for i
} // for rsc_id
} // for gNB_id
LOG_D(PHY," ------ --> PDCCH ChannelComp/LLR Frame.slot %d.%d ------ \n", frame_rx%1024, nr_slot_rx);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SLOT_FEP_PDCCH, VCD_FUNCTION_IN);
uint8_t nb_symb_pdcch = phy_pdcch_config->nb_search_space > 0 ? phy_pdcch_config->pdcch_config[0].coreset.duration : 0;
int first_symb_pdcch = phy_pdcch_config->nb_search_space > 0 ? phy_pdcch_config->pdcch_config[0].coreset.StartSymbolIndex : 0;
int last_symb_pdcch = first_symb_pdcch + nb_symb_pdcch;
for (int l = first_symb_pdcch; l < last_symb_pdcch; l++) {
nr_slot_fep(ue, fp, proc->nr_slot_rx, l, rxdataF, link_type_dl, 0, ue->common_vars.rxdata);
}
// Hold the channel estimates in frequency domain.
int32_t pdcch_est_size = ((((fp->symbols_per_slot*(fp->ofdm_symbol_size+LTE_CE_FILTER_LENGTH))+15)/16)*16);
__attribute__((aligned(16))) c16_t pdcch_dl_ch_estimates[4 * fp->nb_antennas_rx][pdcch_est_size];
uint8_t dci_cnt = 0;
for(int n_ss = 0; n_ss<phy_pdcch_config->nb_search_space; n_ss++) {
for (int l = first_symb_pdcch; l < last_symb_pdcch; l++) {
// note: this only works if RBs for PDCCH are contigous!
nr_pdcch_channel_estimation(ue,
proc,
l,
&phy_pdcch_config->pdcch_config[n_ss].coreset,
fp->first_carrier_offset,
phy_pdcch_config->pdcch_config[n_ss].BWPStart,
pdcch_est_size,
pdcch_dl_ch_estimates,
rxdataF);
}
dci_cnt = dci_cnt + nr_ue_pdcch_procedures(ue, proc, pdcch_est_size, pdcch_dl_ch_estimates, phy_data, n_ss, rxdataF);
}
LOG_D(PHY, "[UE %d] Frame %d, nr_slot_rx %d: found %d DCIs\n", ue->Mod_id, frame_rx, nr_slot_rx, dci_cnt);
phy_pdcch_config->nb_search_space = 0;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SLOT_FEP_PDCCH, VCD_FUNCTION_OUT);
TracyCZoneEnd(ctx);
if (ue->phy_sim_rxdataF)
memcpy(ue->phy_sim_rxdataF, rxdataF[0], sizeof(int32_t) * nb_symb_pdcch * ue->frame_parms.ofdm_symbol_size);
return sampleShift;
}
openair1/SIMULATION/NR_PHY/dlsim.c
+2 -3
View File
@@ -1216,9 +1216,8 @@ int main(int argc, char **argv)
ue_dci_configuration(UE_mac, &dl_config, frame, slot);
nr_ue_scheduled_response(&scheduled_response);
pbch_pdcch_processing(UE,
&UE_proc,
&phy_data);
pbch_processing(UE, &UE_proc, &phy_data);
pdcch_processing(UE, &UE_proc, &phy_data);
pdsch_processing(UE,
&UE_proc,
&phy_data);