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NR UE: don't allocate unnecessary data buffers

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When writing dummy data or reading to trash, we don't need to allocate data buffers for each antenna.
We can allocate just for one antenna and use this buffer for each antenna.
This commit is contained in:
Thomas Schlichter
2026-01-27 11:30:16 +01:00
parent 8e18e5b3aa
commit fb9e848d5b
1 changed files with 8 additions and 7 deletions
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executables/nr-ue.c
+8 -7
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@@ -627,10 +627,10 @@ void dummyWrite(PHY_VARS_NR_UE *UE, openair0_timestamp_t timestamp, int writeBlo
void *dummy_tx[fp->nb_antennas_tx];
// 2 because the function we call use pairs of int16_t implicitly as complex numbers
int16_t dummy_tx_data[fp->nb_antennas_tx][2 * writeBlockSize];
int16_t dummy_tx_data[2 * writeBlockSize];
memset(dummy_tx_data, 0, sizeof(dummy_tx_data));
for (int i = 0; i < fp->nb_antennas_tx; i++)
dummy_tx[i]=dummy_tx_data[i];
dummy_tx[i] = dummy_tx_data;
int tmp = nrue_ru_write(UE, timestamp, dummy_tx, writeBlockSize, fp->nb_antennas_tx, 4);
AssertFatal(writeBlockSize == tmp, "");
@@ -648,9 +648,11 @@ void readFrame(PHY_VARS_NR_UE *UE, openair0_timestamp_t *timestamp, int duration
}
void *rxp[NB_ANTENNAS_RX];
if (toTrash)
for (int i = 0; i < fp->nb_antennas_rx; i++)
rxp[i] = malloc16(get_samples_per_slot(0, fp) * 4);
if (toTrash) {
rxp[0] = malloc16(get_samples_per_slot(0, fp) * 4);
for (int i = 1; i < fp->nb_antennas_rx; i++)
rxp[i] = rxp[0];
}
for (int x = 0; x < num_frames * NR_NUMBER_OF_SUBFRAMES_PER_FRAME; x++) { // two frames for initial sync
for (int slot = 0; slot < fp->slots_per_subframe; slot++) {
@@ -674,8 +676,7 @@ void readFrame(PHY_VARS_NR_UE *UE, openair0_timestamp_t *timestamp, int duration
}
if (toTrash)
for (int i = 0; i < fp->nb_antennas_rx; i++)
free(rxp[i]);
free(rxp[0]);
}
static void syncInFrame(PHY_VARS_NR_UE *UE, openair0_timestamp_t *timestamp, int duration_rx_to_tx, openair0_timestamp_t rx_offset)