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OpenXG UE
Commit 77a8fe1d authored by Ahmed Hussein's avatar Ahmed Hussein Committed by Thomas Schlichter
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DL bug fixes 

- Setting the payload to random data instead of all zeros at the Tx side

- Handling "nb_symb_sch" equal to 0 in "phy_procedures_nrUE_RX" which prevents
  entering "nr_ue_pdsch_procedures"

- Handling symbol loop problem in "nr_ue_pdsch_procedures"

- Handling resource block loop problem in "nr_rx_pdsch"
parent 8518436e
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Showing with 159 additions and 53 deletions
openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c
View file @ 77a8fe1d
......@@ -2397,7 +2397,7 @@ unsigned short nr_dlsch_extract_rbs_single(int **rxdataF,
//if ((frame_parms->N_RB_DL&1) == 0){ // even number of RBs
for (rb=start_rb;rb<nb_rb_pdsch;rb++) {
for (rb = start_rb; rb < nb_rb_pdsch + start_rb; rb++) {
// For second half of RBs skip DC carrier
if (k>=frame_parms->ofdm_symbol_size) {
......
openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
View file @ 77a8fe1d
......@@ -3384,7 +3384,7 @@ void nr_ue_pdsch_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, int eNB
LOG_D(PHY,"[UE %d] PDSCH type %d active in nr_tti_rx %d, harq_pid %d, rb_start %d, nb_rb %d, symbol_start %d, nb_symbols %d\n",ue->Mod_id,pdsch,nr_tti_rx,harq_pid,pdsch_start_rb,pdsch_nb_rb,s0,s1);
for (m=s0;m<=s1;m++) {
for (m = s0; m < (s1 + s0); m++) {
if (m==s0)
nr_pdsch_channel_estimation(ue,
......
openair1/SIMULATION/NR_PHY/dlsim.c
View file @ 77a8fe1d
......@@ -93,7 +93,7 @@ int main(int argc, char **argv)
//int freq_offset;
// int subframe_offset;
// char fname[40], vname[40];
int trial,n_trials=1,n_errors=0;
int trial, n_trials = 1, n_errors = 0, n_false_positive = 0;
//int n_errors2, n_alamouti;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
......@@ -113,7 +113,7 @@ int main(int argc, char **argv)
//double pbch_sinr;
//int pbch_tx_ant;
int N_RB_DL=273,mu=1;
int N_RB_DL=106,mu=1;
uint16_t ssb_periodicity = 10;
......@@ -371,7 +371,6 @@ int main(int argc, char **argv)
phy_init_nr_gNB(gNB,0,0);
mac_top_init_gNB();
double fs,bw;
if (mu == 1 && N_RB_DL == 217) {
......@@ -485,6 +484,14 @@ int main(int argc, char **argv)
UE_mac->if_module = nr_ue_if_module_init(0);
unsigned int available_bits;
unsigned char *estimated_output_bit;
unsigned char *test_input_bit;
unsigned int errors_bit = 0;
uint32_t errors_scrambling = 0;
test_input_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
estimated_output_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
// generate signal
if (input_fd==NULL) {
......@@ -633,51 +640,56 @@ int main(int argc, char **argv)
nr_ue_phy_config_request(&UE_mac->phy_config);
for (SNR=snr0; SNR<snr1; SNR+=.2) {
for (SNR = snr0; SNR < snr1; SNR += .2) {
n_errors = 0;
//n_errors2 = 0;
//n_alamouti = 0;
for (trial=0; trial<n_trials; trial++) {
for (trial = 0; trial < n_trials; trial++) {
// multipath channel
//multipath channel
//multipath_channel(gNB2UE,s_re,s_im,r_re,r_im,frame_length_complex_samples,0);
//AWGN
sigma2_dB = 10*log10((double)txlev)-SNR;
sigma2 = pow(10,sigma2_dB/10);
sigma2_dB = 10 * log10((double)txlev) - SNR;
sigma2 = pow(10, sigma2_dB/10);
// printf("sigma2 %f (%f dB)\n",sigma2,sigma2_dB);
for (i=0; i<frame_length_complex_samples; i++) {
for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
((short*) UE->common_vars.rxdata[aa])[2*i] = (short) ((r_re[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
((short*) UE->common_vars.rxdata[aa])[2*i+1] = (short) ((r_im[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
}
}
if (n_trials==1) {
LOG_M("rxsig0.m","rxs0", UE->common_vars.rxdata[0],frame_length_complex_samples,1,1);
if (n_trials == 1) {
LOG_M("rxsig0.m","rxs0", UE->common_vars.rxdata[0], frame_length_complex_samples, 1, 1);
if (UE->frame_parms.nb_antennas_rx>1)
LOG_M("rxsig1.m","rxs1", UE->common_vars.rxdata[1],frame_length_complex_samples,1,1);
LOG_M("rxsig1.m","rxs1", UE->common_vars.rxdata[1], frame_length_complex_samples, 1, 1);
}
if (UE->is_synchronized == 0) {
UE_nr_rxtx_proc_t proc={0};
ret = nr_initial_sync(&proc, UE, normal_txrx,1);
printf("nr_initial_sync1 returns %d\n",ret);
if (ret<0) n_errors++;
}
else {
UE->rx_offset=0;
UE_nr_rxtx_proc_t proc = {0};
ret = nr_initial_sync(&proc, UE, normal_txrx, 1);
printf("nr_initial_sync1 returns %d\n", ret);
if (ret < 0)
n_errors++;
} else { // UE->is_synchronized != 0
UE->rx_offset = 0;
UE_proc.frame_rx = frame;
UE_proc.nr_tti_rx= slot;
UE_proc.nr_tti_rx = slot;
UE_proc.subframe_rx = slot;
nr_ue_scheduled_response(&UE_mac->scheduled_response);
printf("Running phy procedures UE RX %d.%d\n",frame,slot);
printf("Running phy procedures UE RX %d.%d\n", frame, slot);
phy_procedures_nrUE_RX(UE,
&UE_proc,
......@@ -685,29 +697,115 @@ int main(int argc, char **argv)
do_pdcch_flag,
normal_txrx);
if (n_trials==1) {
LOG_M("rxsigF0.m","rxsF0", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[0],slot_length_complex_samples_no_prefix,1,1);
if (UE->frame_parms.nb_antennas_rx>1)
LOG_M("rxsigF1.m","rxsF1", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[1],slot_length_complex_samples_no_prefix,1,1);
if (n_trials == 1) {
LOG_M("rxsigF0.m","rxsF0", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[0], slot_length_complex_samples_no_prefix, 1, 1);
if (UE->frame_parms.nb_antennas_rx > 1)
LOG_M("rxsigF1.m","rxsF1", UE->common_vars.common_vars_rx_data_per_thread[0].rxdataF[1], slot_length_complex_samples_no_prefix, 1, 1);
}
if (UE_mac->dl_config_request.number_pdus == 0)
n_errors++;
//----------------------------------------------------------
//---------------------- count errors ----------------------
//----------------------------------------------------------
NR_gNB_DLSCH_t *gNB_dlsch = gNB->dlsch[0][0];
NR_UE_DLSCH_t *dlsch0 = UE->dlsch[UE->current_thread_id[UE_proc.nr_tti_rx]][0][0];
int harq_pid = dlsch0->current_harq_pid;
NR_DL_UE_HARQ_t *UE_harq_process = dlsch0->harq_processes[harq_pid];
NR_UE_PDSCH **pdsch_vars = UE->pdsch_vars[UE->current_thread_id[UE_proc.nr_tti_rx]];
int16_t *UE_llr = pdsch_vars[0]->llr[0];
nfapi_nr_dl_config_dlsch_pdu_rel15_t rel15 = gNB_dlsch->harq_processes[harq_pid]->dlsch_pdu.dlsch_pdu_rel15;
uint32_t TBS = rel15.transport_block_size;
uint16_t length_dmrs = 1;
uint16_t nb_rb = rel15.n_prb;
uint8_t nb_re_dmrs = rel15.nb_re_dmrs;
uint8_t mod_order = rel15.modulation_order;
uint8_t nb_symb_sch = rel15.nb_symbols;
available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, mod_order, rel15.nb_layers);
printf("\n");
printf("available_bits = %d\n",available_bits);
for (i = 0; i < available_bits; i++) {
if(((gNB_dlsch->harq_processes[harq_pid]->f[i] == 0) && (UE_llr[i] <= 0)) ||
((gNB_dlsch->harq_processes[harq_pid]->f[i] == 1) && (UE_llr[i] >= 0)))
{
if(errors_scrambling == 0) {
printf("\n");
printf("First bit in error in unscrambling = %d\n",i);
}
errors_scrambling++;
}
if (UE_mac->dl_config_request.number_pdus==0) n_errors++; //if (UE->dci_ind.number_of_dcis==0) n_errors++;
}
} //noise trials
printf("SNR %f : n_errors (negative CRC) = %d/%d\n", SNR,n_errors,n_trials);
for (i = 0; i < TBS; i++) {
if ((float)n_errors/(float)n_trials <= target_error_rate) {
printf("PDCCH test OK\n");
break;
estimated_output_bit[i] = (UE_harq_process->b[i/8] & (1 << (i & 7))) >> (i & 7);
test_input_bit[i] = (gNB_dlsch->harq_processes[harq_pid]->b[i / 8] & (1 << (i & 7))) >> (i & 7); // Further correct for multiple segments
if (estimated_output_bit[i] != test_input_bit[i]) {
if(errors_bit == 0)
printf("First bit in error in decoding = %d\n",i);
errors_bit++;
}
}
////////////////////////////////////////////////////////////
if (errors_scrambling > 0) {
if (n_trials == 1)
printf("errors_scrambling = %d (trial %d)\n", errors_scrambling, trial);
}
if (n_trials==1)
if (errors_bit > 0) {
n_false_positive++;
if (n_trials == 1)
printf("errors_bit = %d (trial %d)\n", errors_bit, trial);
}
printf("\n");
} // if (UE->is_synchronized == 0)
} // noise trials
printf("*****************************************\n");
printf("SNR %f, (false positive %f)\n", SNR,
(float) n_false_positive / (float) n_trials);
printf("*****************************************\n");
printf("\n");
if (errors_bit == 0) {
printf("PDSCH test OK\n");
printf("\n");
break;
}
printf("\n");
// printf("SNR %f : n_errors (negative CRC) = %d/%d\n", SNR, n_errors, n_trials);
// if ((float)n_errors/(float)n_trials <= target_error_rate) {
// printf("PDCCH test OK\n");
// break;
// }
// if (n_trials == 1)
// break;
} // NSR
for (i=0; i<2; i++) {
for (i = 0; i < 2; i++) {
free(s_re[i]);
free(s_im[i]);
free(r_re[i]);
......@@ -720,6 +818,8 @@ int main(int argc, char **argv)
free(r_re);
free(r_im);
free(txdata);
free(test_input_bit);
free(estimated_output_bit);
if (output_fd)
fclose(output_fd);
......
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c
View file @ 77a8fe1d
......@@ -33,7 +33,6 @@
#include "mac_proto.h"
#include "PHY/NR_TRANSPORT/nr_dlsch.h"
#include "PHY/NR_TRANSPORT/nr_dci.h"
extern RAN_CONTEXT_t RC;
/*Scheduling of DLSCH with associated DCI in common search space
......@@ -296,8 +295,15 @@ void nr_schedule_uss_dlsch_phytest(module_id_t module_idP,
TX_req->pdu_length = dlsch_pdu_rel15->transport_block_size;
TX_req->pdu_index = nr_mac->pdu_index[CC_id]++;
TX_req->num_segments = 1;
TX_req->segments[0].segment_data = nr_mac->UE_list.DLSCH_pdu[CC_id][0][0].payload[0];
// HOT FIX for all zero pdu problem
// ------------------------------------------------------------------------------------------------
for(int i = 0; i < dlsch_pdu_rel15->transport_block_size/8; i++) {
((uint8_t *)nr_mac->UE_list.DLSCH_pdu[CC_id][0][0].payload[0])[i] = (unsigned char) rand();
}
// ------------------------------------------------------------------------------------------------
TX_req->segments[0].segment_data = nr_mac->UE_list.DLSCH_pdu[CC_id][0][0].payload[0];
TX_req->segments[0].segment_length = dlsch_pdu_rel15->transport_block_size+2;
nr_mac->TX_req[CC_id].tx_request_body.number_of_pdus++;
nr_mac->TX_req[CC_id].sfn_sf = sfn_sf;
......
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