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Remove global gNB SRS memory

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This means that as of this commit, the signal has to be permanently
regenerated. In fact, with the SRS queue to be introduced in a follow-up
commit, we don't have an easy way to cache the sequence generation, as
there is no "index" to which we could refer to (hence, caching would be
tricky).

Instead, the next commits further refactor this to reduce the time for
SRS sequence generation as well as the memory footprint.

Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>
This commit is contained in:
Robert Schmidt
2026-04-16 11:53:19 +02:00
parent 2213235fc1
commit 4a47fbbef7
6 changed files with 21 additions and 70 deletions
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openair1/PHY/INIT/nr_init.c
-19
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@@ -141,16 +141,6 @@ void phy_init_nr_gNB(PHY_VARS_gNB *gNB)
init_DLSCH_struct(gNB);
gNB->nr_srs_info = (nr_srs_info_t **)malloc16_clear(gNB->max_nb_srs * sizeof(nr_srs_info_t*));
for (int id = 0; id < gNB->max_nb_srs; id++) {
gNB->nr_srs_info[id] = (nr_srs_info_t *)malloc16_clear(sizeof(nr_srs_info_t));
gNB->nr_srs_info[id]->srs_generated_signal = malloc16_clear(MAX_NUM_NR_SRS_AP * sizeof(c16_t *));
for(int ap=0; ap<MAX_NUM_NR_SRS_AP; ap++) {
gNB->nr_srs_info[id]->srs_generated_signal[ap] =
malloc16_clear(fp->ofdm_symbol_size * MAX_NUM_NR_SRS_SYMBOLS * sizeof(c16_t));
}
}
/* Do NOT allocate per-antenna rxdataF: the gNB gets a pointer to the
* RU to copy/recover freq-domain memory from there */
common_vars->rxdataF = (c16_t ***)malloc16(common_vars->num_beams_period * sizeof(c16_t**));
@@ -212,15 +202,6 @@ void phy_free_nr_gNB(PHY_VARS_gNB *gNB)
PHY_MEASUREMENTS_gNB *meas = &gNB->measurements;
free_and_zero(meas->n0_subband_power);
for (int id = 0; id < gNB->max_nb_srs; id++) {
for(int i=0; i<MAX_NUM_NR_SRS_AP; i++) {
free_and_zero(gNB->nr_srs_info[id]->srs_generated_signal[i]);
}
free_and_zero(gNB->nr_srs_info[id]->srs_generated_signal);
free_and_zero(gNB->nr_srs_info[id]);
}
free_and_zero(gNB->nr_srs_info);
free_ul_reference_signal_sequences();
free_gnb_lowpapr_sequences();