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srsRAN_4G
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Improvement in how PDSCH UE shows downlink statistics.

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master
Xavier Arteaga 7 years ago
parent ed19a4d200
commit 9c9c07a845
3 changed files with 53 additions and 28 deletions
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64
lib/examples/pdsch_ue.c
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@ -512,9 +512,14 @@ int main(int argc, char **argv) {
// Variables for measurements
uint32_t nframes=0;
uint32_t ri = 0, pmi = 0;
float rsrp0=0.0, rsrp1=0.0, rsrq=0.0, noise=0.0, enodebrate = 0.0, uerate = 0.0, sinr = 0.0;
float rsrp0=0.0, rsrp1=0.0, rsrq=0.0, noise=0.0, enodebrate = 0.0, uerate = 0.0,
sinr[SRSLTE_MAX_LAYERS][SRSLTE_MAX_CODEBOOKS];
bool decode_pdsch = false;
for (int i = 0; i < SRSLTE_MAX_LAYERS; i++) {
bzero(sinr[i], sizeof(float)*SRSLTE_MAX_CODEBOOKS);
}
#ifndef DISABLE_RF
if (prog_args.rf_gain < 0) {
srslte_ue_sync_start_agc(&ue_sync, srslte_rf_set_rx_gain_th_wrapper_, cell_detect_config.init_agc);
@ -618,15 +623,6 @@ int main(int argc, char **argv) {
enodebrate = SRSLTE_VEC_EMA((ue_dl.pdsch_cfg.grant.mcs.tbs + ue_dl.pdsch_cfg.grant.mcs2.tbs)/1000.0, enodebrate, 0.05);
uerate = SRSLTE_VEC_EMA((n>0)?(ue_dl.pdsch_cfg.grant.mcs.tbs + ue_dl.pdsch_cfg.grant.mcs2.tbs)/1000.0:0.0, uerate, 0.01);
if (ue_dl.cell.nof_ports == 2 && ue_dl.pdsch.nof_rx_antennas == 2) {
float _sinr;
srslte_ue_dl_ri_pmi_select(&ue_dl, &ri, &pmi, &_sinr);
if (!isinff(_sinr) && !isnanf(_sinr)) {
sinr = SRSLTE_VEC_EMA(_sinr, sinr, 0.05f);
}
}
nframes++;
if (isnan(rsrq)) {
rsrq = 0;
@ -658,23 +654,34 @@ int main(int argc, char **argv) {
100 * (1 - (float) ue_dl.nof_detected / nof_trials),
(float) 100 * ue_dl.pkt_errors / ue_dl.pkts_total);
} else {
printf("CFO: %+5.2f kHz, "
"SNR: %+5.1f dB | %+5.1f dB, "
"Rb: %6.2f / %6.2f Mbps, "
"PDCCH-Miss: %5.2f%%, "
"PDSCH-BLER: %5.2f%%, "
"SINR: %3.1f dB RI: %d PMI: %d \r",
/* Compute Rank Indicator (RI) and Precoding Matrix Indicator (PMI) */
srslte_ue_dl_ri_pmi_select(&ue_dl, &ri, &pmi, NULL);
for (uint32_t nl = 0; nl < SRSLTE_MAX_LAYERS; nl++) {
for (uint32_t cb = 0; cb < SRSLTE_MAX_CODEBOOKS; cb ++) {
sinr[nl][cb] = SRSLTE_VEC_EMA(ue_dl.sinr[nl][cb], sinr[nl][cb], 0.05f);
}
}
srslte_ue_sync_get_cfo(&ue_sync) / 1000,
10 * log10(rsrp0 / noise),
10 * log10(rsrp1 / noise),
uerate,
enodebrate,
100 * (1 - (float) ue_dl.nof_detected / nof_trials),
(float) 100 * ue_dl.pkt_errors / ue_dl.pkts_total,
10 * log10(sinr),
ri,
pmi);
/* Print Results */
printf("\033[K Tx scheme: %-10s\n", srslte_mimotype2str(ue_dl.pdsch_cfg.mimo_type));
printf("\033[K nof layers: %d \n", ue_dl.pdsch_cfg.nof_layers);
printf("\033[Knof codewords: %d \n", ue_dl.pdsch_cfg.grant.nof_tb);
printf("\033[K CFO: %+5.2f kHz\n", srslte_ue_sync_get_cfo(&ue_sync) / 1000);
printf("\033[K SNR: %+5.1f dB | %+5.1f dB\n", 10 * log10(rsrp0 / noise), 10 * log10(rsrp1 / noise));
printf("\033[K Rb: %6.2f / %6.2f Mbps (net/maximum)\n", uerate, enodebrate);
printf("\033[K PDCCH-Miss: %5.2f%%\n", 100 * (1 - (float) ue_dl.nof_detected / nof_trials));
printf("\033[K PDSCH-BLER: %5.2f%%\n", (float) 100 * ue_dl.pkt_errors / ue_dl.pkts_total);
printf("\033[K PDSCH-BLER: %5.2f%%\n\n", (float) 100 * ue_dl.pkt_errors / ue_dl.pkts_total);
printf("\033[K\n");
printf("\033[KSINR (dB) Vs RI and PMI:\n");
printf("\033[K | RI | 1 | 2 |\n");
printf("\033[K -------+-------+-------+\n");
printf("\033[K P | 0 | %5.2f%c| %5.2f%c|\n", 10 * log10(sinr[0][0]), (ri == 1 && pmi == 0)?'*':' ', 10 * log10(sinr[1][0]), (ri == 2 && pmi == 0)?'*':' ');
printf("\033[K M | 1 | %5.2f%c| %5.2f%c|\n", 10 * log10(sinr[0][1]), (ri == 1 && pmi == 1)?'*':' ', 10 * log10(sinr[1][1]), (ri == 2 && pmi == 1)?'*':' ');
printf("\033[K I | 2 | %5.2f%c|-------+ \n", 10 * log10(sinr[0][2]), (ri == 1 && pmi == 2)?'*':' ');
printf("\033[K | 3 | %5.2f%c| \n", 10 * log10(sinr[0][3]), (ri == 1 && pmi == 3)?'*':' ');
printf("\033[K\n\n");
printf("\033[20A");
}
}
break;
@ -683,7 +690,7 @@ int main(int argc, char **argv) {
sfn++;
if (sfn == 1024) {
sfn = 0;
printf("\n");
printf("\033[20B");
ue_dl.pkt_errors = 0;
ue_dl.pkts_total = 0;
ue_dl.nof_detected = 0;
@ -715,7 +722,8 @@ int main(int argc, char **argv) {
sf_cnt++;
} // Main loop
printf("\033[20B");
#ifndef DISABLE_GRAPHICS
if (!prog_args.disable_plots) {
if (!pthread_kill(plot_thread, 0)) {

2
lib/include/srslte/phy/common/phy_common.h
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@ -282,6 +282,8 @@ SRSLTE_API int srslte_band_get_fd_region(enum band_geographical_area region,
SRSLTE_API int srslte_str2mimotype(char *mimo_type_str,
srslte_mimo_type_t *type);
SRSLTE_API char *srslte_mimotype2str(srslte_mimo_type_t mimo_type);
SRSLTE_API uint32_t srslte_tti_interval(uint32_t tti1,
uint32_t tti2);

15
lib/src/phy/common/phy_common.c
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@ -446,6 +446,21 @@ int srslte_str2mimotype(char *mimo_type_str, srslte_mimo_type_t *type) {
return SRSLTE_SUCCESS;
}
char *srslte_mimotype2str(srslte_mimo_type_t mimo_type) {
switch (mimo_type) {
case SRSLTE_MIMO_TYPE_SINGLE_ANTENNA:
return "Single";
case SRSLTE_MIMO_TYPE_TX_DIVERSITY:
return "Diversity";
case SRSLTE_MIMO_TYPE_SPATIAL_MULTIPLEX:
return "Multiplex";
case SRSLTE_MIMO_TYPE_CDD:
return "CDD";
default:
return "N/A";
}
}
float get_fd(struct lte_band *band, uint32_t dl_earfcn) {
if (dl_earfcn >= band->dl_earfcn_offset) {
return band->fd_low_mhz + 0.1*(dl_earfcn - band->dl_earfcn_offset);

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