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Remove the usage of global mem for rach rx process

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saves about 600MB of memory allocation

Move the definition of PRACH items and the PRACH list to the
defs_nr_commons.h file.

Do not re-write the entire structure in nr_schedule_rx_prach(), as it is
quite large now.
This commit is contained in:
Laurent THOMAS
2025-10-30 23:01:06 +01:00
committed by Robert Schmidt
parent fff95cc075
commit 1292cd68b7
12 changed files with 64 additions and 102 deletions
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openair1/SIMULATION/NR_PHY/prachsim.c
+2 -19
View File
@@ -718,15 +718,6 @@ int main(int argc, char **argv){
if (n_frames == 1)
printf("slot %d, rx_prach_start %d\n", slot, rx_prach_start);
c16_t **rxsigF[NUMBER_OF_NR_RU_PRACH_OCCASIONS_MAX];
for (int j = 0; j < NUMBER_OF_NR_RU_PRACH_OCCASIONS_MAX; j++) {
rxsigF[j] = malloc(ru->nb_rx * sizeof(*rxsigF));
for (int i = 0; i < ru->nb_rx; i++) {
// largest size for PRACH FFT is 4x98304 (16*24576)
rxsigF[j][i] = malloc16_clear(4 * 98304 * sizeof(**rxsigF));
}
}
for (SNR = snr0; SNR < snr1 && !stop; SNR += .1) {
for (ue_speed = ue_speed0; ue_speed < ue_speed1 && !stop; ue_speed += 10) {
delay_avg = 0.0;
@@ -792,7 +783,6 @@ int main(int argc, char **argv){
.restricted_set = cfg->restricted_set_config.value,
.numerology_index = gNB->frame_parms.numerology_index,
.nb_rx = gNB->gNB_config.carrier_config.num_rx_ant.value,
.rxsigF = rxsigF,
.Xu = gNB->X_u,
.rx_prach = &gNB->rx_prach};
rx_nr_prach_ru(&in, ru->common.rxdata, ru->nr_frame_parms, ru->N_TA_offset);
@@ -824,7 +814,7 @@ int main(int argc, char **argv){
LOG_M("rxsig0.m","rxs0", &ru->common.rxdata[0][subframe*frame_parms->samples_per_subframe], frame_parms->samples_per_subframe, 1, 1);
LOG_M("ru_rxsig0.m","rxs0", &ru->common.rxdata[0][subframe*frame_parms->samples_per_subframe], frame_parms->samples_per_subframe, 1, 1);
LOG_M("ru_rxsigF0.m","rxsF0", ru->common.rxdataF[0], frame_parms->ofdm_symbol_size*frame_parms->symbols_per_slot, 1, 1);
LOG_M("ru_prach_rxsigF0.m", "rxsF0", rxsigF[0][0], N_ZC, 1, 1);
LOG_M("ru_prach_rxsigF0.m", "rxsF0", in.rxsigF[0][0], N_ZC, 1, 1);
LOG_M("prach_preamble.m","prachp", &gNB->X_u[0], N_ZC, 1, 1);
LOG_M("ue_prach_preamble.m","prachp", &UE->X_u[0], N_ZC, 1, 1);
#endif
@@ -844,14 +834,7 @@ int main(int argc, char **argv){
}
if (input_fd)
break;
} //SNR loop
for (int j = 0; j < NUMBER_OF_NR_RU_PRACH_OCCASIONS_MAX; j++) {
for (int i = 0; i < ru->nb_rx; i++) {
// largest size for PRACH FFT is 4x98304 (16*24576)
free(rxsigF[j][i]);
}
free(rxsigF[j]);
}
} // SNR loop
free_channel_desc_scm(UE2gNB);
nr_phy_free_RU(ru);