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srsRAN_4G/lib/test/phy/phy_dl_nr_test.c

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/**
* Copyright 2013-2021 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsRAN is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "srsran/phy/gnb/gnb_dl.h"
#include "srsran/phy/phch/ra_dl_nr.h"
#include "srsran/phy/phch/ra_nr.h"
#include "srsran/phy/ue/ue_dl_nr.h"
#include "srsran/phy/utils/debug.h"
#include "srsran/phy/utils/random.h"
#include "srsran/phy/utils/vector.h"
#include <getopt.h>
static srsran_carrier_nr_t carrier = SRSRAN_DEFAULT_CARRIER_NR;
static uint32_t n_prb = 0; // Set to 0 for steering
static uint32_t mcs = 30; // Set to 30 for steering
static srsran_sch_cfg_nr_t pdsch_cfg = {};
static uint32_t nof_slots = 10;
static uint32_t rv_idx = 0;
static uint32_t delay_n = 0; // Integer delay
static float cfo_hz = 0.0f; // CFO Hz
static srsran_dmrs_sch_type_t dmrs_type = srsran_dmrs_sch_type_1;
static srsran_dmrs_sch_add_pos_t dmrs_add_pos = srsran_dmrs_sch_add_pos_2;
static bool interleaved_pdcch = false;
static void usage(char* prog)
{
printf("Usage: %s [rRPdpmnTILDCv] \n", prog);
printf("\t-P Number of BWP (Carrier) PRB [Default %d]\n", carrier.nof_prb);
printf("\t-p Number of grant PRB, set to 0 for steering [Default %d]\n", n_prb);
printf("\t-n Number of slots to simulate [Default %d]\n", nof_slots);
printf("\t-m MCS PRB, set to >28 for steering [Default %d]\n", mcs);
printf("\t-r Redundancy version, set to >28 for steering [Default %d]\n", mcs);
printf("\t-d DMRS configuration [type 1-2] [add_pos 2-3] [CDM groups 1-3] [Default %d]\n", mcs);
printf("\t-T Provide MCS table (64qam, 256qam, 64qamLowSE) [Default %s]\n",
srsran_mcs_table_to_str(pdsch_cfg.sch_cfg.mcs_table));
printf("\t-R Reserve RE: [rb_begin] [rb_end] [rb_stride] [sc_mask] [symbol_mask]\n");
printf("\t-I Enable interleaved CCE-to-REG [Default %s]\n", interleaved_pdcch ? "Enabled" : "Disabled");
printf("\t-L Provide number of layers [Default %d]\n", carrier.max_mimo_layers);
printf("\t-D Delay signal an integer number of samples [Default %d samples]\n", delay_n);
printf("\t-C Frequency shift (CFO) signal in Hz [Default %+.0f Hz]\n", cfo_hz);
printf("\t-v [set srsran_verbose to debug, default none]\n");
}
static int parse_args(int argc, char** argv)
{
int opt;
while ((opt = getopt(argc, argv, "rRIPdpmnTLDCv")) != -1) {
switch (opt) {
case 'P':
carrier.nof_prb = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'p':
n_prb = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'n':
nof_slots = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'm':
mcs = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'r':
rv_idx = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'd':
switch (strtol(argv[optind++], NULL, 10)) {
case 1:
dmrs_type = srsran_dmrs_sch_type_1;
break;
case 2:
dmrs_type = srsran_dmrs_sch_type_2;
break;
}
switch (strtol(argv[optind], NULL, 10)) {
case 0:
dmrs_add_pos = srsran_dmrs_sch_add_pos_0;
break;
case 1:
dmrs_add_pos = srsran_dmrs_sch_add_pos_1;
break;
case 2:
dmrs_add_pos = srsran_dmrs_sch_add_pos_2;
break;
case 3:
dmrs_add_pos = srsran_dmrs_sch_add_pos_3;
break;
}
break;
case 'T':
pdsch_cfg.sch_cfg.mcs_table = srsran_mcs_table_from_str(argv[optind]);
break;
case 'R': {
srsran_re_pattern_t pattern = {};
pattern.rb_begin = (uint32_t)strtol(argv[optind++], NULL, 10);
pattern.rb_end = (uint32_t)strtol(argv[optind++], NULL, 10);
pattern.rb_stride = (uint32_t)strtol(argv[optind++], NULL, 10);
uint32_t sc_mask = (uint32_t)strtol(argv[optind++], NULL, 2);
for (uint32_t i = 0; i < SRSRAN_NRE; i++) {
pattern.sc[i] = ((sc_mask >> (SRSRAN_NRE - 1U - i)) & 0x1) == 0x1;
}
uint32_t symbol_mask = (uint32_t)strtol(argv[optind], NULL, 2);
for (uint32_t i = 0; i < SRSRAN_NSYMB_PER_SLOT_NR; i++) {
pattern.symbol[i] = ((symbol_mask >> (SRSRAN_NSYMB_PER_SLOT_NR - 1U - i)) & 0x1) == 0x1;
}
if (srsran_re_pattern_merge(&pdsch_cfg.rvd_re, &pattern) < SRSRAN_ERROR) {
ERROR("Error adding pattern");
return SRSRAN_ERROR;
}
} break;
case 'I':
interleaved_pdcch ^= true;
break;
case 'L':
carrier.max_mimo_layers = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'D':
delay_n = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'C':
cfo_hz = strtof(argv[optind], NULL);
break;
case 'v':
srsran_verbose++;
break;
default:
usage(argv[0]);
return SRSRAN_ERROR;
}
}
return SRSRAN_SUCCESS;
}
static int work_gnb_dl(srsran_gnb_dl_t* gnb_dl,
srsran_slot_cfg_t* slot,
srsran_search_space_t* search_space,
srsran_dci_location_t* dci_location,
uint8_t** data_tx)
{
if (srsran_gnb_dl_base_zero(gnb_dl) < SRSRAN_SUCCESS) {
ERROR("Error setting base to zero");
return SRSRAN_ERROR;
}
// Hard-coded values
srsran_dci_dl_nr_t dci_dl = {};
dci_dl.ctx.rnti = pdsch_cfg.grant.rnti;
dci_dl.ctx.rnti_type = pdsch_cfg.grant.rnti_type;
dci_dl.ctx.format = srsran_dci_format_nr_1_0;
dci_dl.ctx.location = *dci_location;
dci_dl.ctx.ss_type = search_space->type;
dci_dl.ctx.coreset_id = 1;
dci_dl.ctx.coreset_start_rb = 0;
dci_dl.freq_domain_assigment = 0;
dci_dl.time_domain_assigment = 0;
dci_dl.vrb_to_prb_mapping = 0;
dci_dl.mcs = mcs;
dci_dl.rv = 0;
// Put actual DCI
if (srsran_gnb_dl_pdcch_put_dl(gnb_dl, slot, &dci_dl) < SRSRAN_SUCCESS) {
ERROR("Error putting PDCCH");
return SRSRAN_ERROR;
}
// Put PDSCH transmission
if (srsran_gnb_dl_pdsch_put(gnb_dl, slot, &pdsch_cfg, data_tx) < SRSRAN_SUCCESS) {
ERROR("Error putting PDSCH");
return SRSRAN_ERROR;
}
srsran_gnb_dl_gen_signal(gnb_dl);
return SRSRAN_SUCCESS;
}
static int work_ue_dl(srsran_ue_dl_nr_t* ue_dl, srsran_slot_cfg_t* slot, srsran_pdsch_res_nr_t* pdsch_res)
{
srsran_ue_dl_nr_estimate_fft(ue_dl, slot);
srsran_dci_dl_nr_t dci_dl_rx = {};
int nof_found_dci =
srsran_ue_dl_nr_find_dl_dci(ue_dl, slot, pdsch_cfg.grant.rnti, pdsch_cfg.grant.rnti_type, &dci_dl_rx, 1);
if (nof_found_dci < SRSRAN_SUCCESS) {
ERROR("Error decoding");
return SRSRAN_ERROR;
}
if (nof_found_dci < 1) {
ERROR("Error DCI not found");
return SRSRAN_ERROR;
}
if (srsran_ue_dl_nr_decode_pdsch(ue_dl, slot, &pdsch_cfg, pdsch_res) < SRSRAN_SUCCESS) {
ERROR("Error decoding");
return SRSRAN_ERROR;
}
return SRSRAN_SUCCESS;
}
int main(int argc, char** argv)
{
int ret = SRSRAN_ERROR;
srsran_gnb_dl_t gnb_dl = {};
srsran_ue_dl_nr_t ue_dl = {};
srsran_pdsch_res_nr_t pdsch_res = {};
srsran_random_t rand_gen = srsran_random_init(1234);
srsran_slot_cfg_t slot = {};
struct timeval t[3] = {};
uint64_t pdsch_encode_us = 0;
uint64_t pdsch_decode_us = 0;
uint64_t nof_bits = 0;
uint8_t* data_tx[SRSRAN_MAX_TB] = {};
uint8_t* data_rx[SRSRAN_MAX_CODEWORDS] = {};
cf_t* buffer_gnb[SRSRAN_MAX_PORTS] = {};
cf_t* buffer_ue[SRSRAN_MAX_PORTS] = {};
// Set default PDSCH configuration
if (parse_args(argc, argv) < SRSRAN_SUCCESS) {
goto clean_exit;
}
uint32_t sf_len = SRSRAN_SF_LEN_PRB_NR(carrier.nof_prb);
buffer_gnb[0] = srsran_vec_cf_malloc(sf_len);
buffer_ue[0] = srsran_vec_cf_malloc(sf_len);
if (buffer_gnb[0] == NULL || buffer_ue[0] == NULL) {
ERROR("Error malloc");
goto clean_exit;
}
srsran_ue_dl_nr_args_t ue_dl_args = {};
ue_dl_args.nof_rx_antennas = 1;
ue_dl_args.pdsch.sch.disable_simd = false;
ue_dl_args.pdsch.sch.decoder_use_flooded = false;
ue_dl_args.pdsch.measure_evm = true;
ue_dl_args.pdcch.disable_simd = false;
ue_dl_args.pdcch.measure_evm = true;
ue_dl_args.nof_max_prb = carrier.nof_prb;
srsran_gnb_dl_args_t gnb_dl_args = {};
gnb_dl_args.nof_tx_antennas = 1;
gnb_dl_args.pdsch.sch.disable_simd = false;
gnb_dl_args.pdcch.disable_simd = false;
gnb_dl_args.nof_max_prb = carrier.nof_prb;
gnb_dl_args.srate_hz = SRSRAN_SUBC_SPACING_NR(carrier.scs) * srsran_min_symbol_sz_rb(carrier.nof_prb);
srsran_pdcch_cfg_nr_t pdcch_cfg = {};
// Configure CORESET
srsran_coreset_t* coreset = &pdcch_cfg.coreset[1];
pdcch_cfg.coreset_present[1] = true;
coreset->duration = 1;
uint32_t coreset_bw_rb = carrier.nof_prb;
if (interleaved_pdcch) {
coreset->mapping_type = srsran_coreset_mapping_type_interleaved;
coreset->reg_bundle_size = srsran_coreset_bundle_size_n6;
coreset->interleaver_size = srsran_coreset_bundle_size_n2;
coreset->precoder_granularity = srsran_coreset_precoder_granularity_reg_bundle;
coreset->shift_index = carrier.pci;
coreset_bw_rb = SRSRAN_FLOOR(carrier.nof_prb, 12) * 12;
}
for (uint32_t i = 0; i < SRSRAN_CORESET_FREQ_DOMAIN_RES_SIZE; i++) {
coreset->freq_resources[i] = i < coreset_bw_rb / 6;
}
// Configure Search Space
srsran_search_space_t* search_space = &pdcch_cfg.search_space[0];
pdcch_cfg.search_space_present[0] = true;
search_space->id = 0;
search_space->coreset_id = 1;
search_space->type = srsran_search_space_type_common_3;
search_space->formats[0] = srsran_dci_format_nr_0_0;
search_space->formats[1] = srsran_dci_format_nr_1_0;
search_space->nof_formats = 2;
for (uint32_t L = 0; L < SRSRAN_SEARCH_SPACE_NOF_AGGREGATION_LEVELS_NR; L++) {
search_space->nof_candidates[L] = srsran_pdcch_nr_max_candidates_coreset(coreset, L);
}
if (srsran_ue_dl_nr_init(&ue_dl, buffer_ue, &ue_dl_args)) {
ERROR("Error UE DL");
goto clean_exit;
}
if (srsran_gnb_dl_init(&gnb_dl, buffer_gnb, &gnb_dl_args)) {
ERROR("Error UE DL");
goto clean_exit;
}
if (srsran_ue_dl_nr_set_carrier(&ue_dl, &carrier)) {
ERROR("Error setting SCH NR carrier");
goto clean_exit;
}
srsran_dci_cfg_nr_t dci_cfg = {};
dci_cfg.bwp_dl_initial_bw = carrier.nof_prb;
dci_cfg.bwp_ul_initial_bw = carrier.nof_prb;
dci_cfg.monitor_common_0_0 = true;
if (srsran_ue_dl_nr_set_pdcch_config(&ue_dl, &pdcch_cfg, &dci_cfg)) {
ERROR("Error setting CORESET");
goto clean_exit;
}
if (srsran_gnb_dl_set_carrier(&gnb_dl, &carrier)) {
ERROR("Error setting SCH NR carrier");
goto clean_exit;
}
if (srsran_gnb_dl_set_pdcch_config(&gnb_dl, &pdcch_cfg, &dci_cfg)) {
ERROR("Error setting CORESET");
goto clean_exit;
}
for (uint32_t i = 0; i < 1; i++) {
data_tx[i] = srsran_vec_u8_malloc(SRSRAN_SLOT_MAX_NOF_BITS_NR);
data_rx[i] = srsran_vec_u8_malloc(SRSRAN_SLOT_MAX_NOF_BITS_NR);
if (data_tx[i] == NULL || data_rx[i] == NULL) {
ERROR("Error malloc");
goto clean_exit;
}
pdsch_res.tb[i].payload = data_rx[i];
}
srsran_softbuffer_tx_t softbuffer_tx = {};
srsran_softbuffer_rx_t softbuffer_rx = {};
if (srsran_softbuffer_tx_init_guru(&softbuffer_tx, SRSRAN_SCH_NR_MAX_NOF_CB_LDPC, SRSRAN_LDPC_MAX_LEN_ENCODED_CB) <
SRSRAN_SUCCESS) {
ERROR("Error init soft-buffer");
goto clean_exit;
}
if (srsran_softbuffer_rx_init_guru(&softbuffer_rx, SRSRAN_SCH_NR_MAX_NOF_CB_LDPC, SRSRAN_LDPC_MAX_LEN_ENCODED_CB) <
SRSRAN_SUCCESS) {
ERROR("Error init soft-buffer");
goto clean_exit;
}
// Use grant default A time resources with m=0
pdsch_cfg.dmrs.type = dmrs_type;
pdsch_cfg.dmrs.typeA_pos = srsran_dmrs_sch_typeA_pos_2;
pdsch_cfg.dmrs.additional_pos = dmrs_add_pos;
pdsch_cfg.grant.S = 1;
pdsch_cfg.grant.L = 13;
pdsch_cfg.grant.nof_layers = carrier.max_mimo_layers;
pdsch_cfg.grant.dci_format = srsran_dci_format_nr_1_0;
pdsch_cfg.grant.nof_dmrs_cdm_groups_without_data = 1;
pdsch_cfg.grant.beta_dmrs = srsran_convert_dB_to_amplitude(3);
pdsch_cfg.grant.rnti_type = srsran_rnti_type_c;
pdsch_cfg.grant.rnti = 0x4601;
pdsch_cfg.grant.tb[0].rv = rv_idx;
uint32_t n_prb_start = 1;
uint32_t n_prb_end = carrier.nof_prb + 1;
if (n_prb > 0) {
n_prb_start = SRSRAN_MIN(n_prb, n_prb_end - 1);
n_prb_end = SRSRAN_MIN(n_prb + 1, n_prb_end);
}
uint32_t mcs_start = 0;
uint32_t mcs_end = pdsch_cfg.sch_cfg.mcs_table == srsran_mcs_table_256qam ? 28 : 29;
if (mcs < mcs_end) {
mcs_start = SRSRAN_MIN(mcs, mcs_end - 1);
mcs_end = SRSRAN_MIN(mcs + 1, mcs_end);
}
uint64_t slot_count = 0;
for (slot.idx = 0; slot.idx < nof_slots; slot.idx++) {
for (n_prb = n_prb_start; n_prb < n_prb_end; n_prb++) {
for (mcs = mcs_start; mcs < mcs_end; mcs++, slot_count++) {
for (uint32_t n = 0; n < SRSRAN_MAX_PRB_NR; n++) {
pdsch_cfg.grant.prb_idx[n] = (n < n_prb);
}
pdsch_cfg.grant.nof_prb = n_prb;
if (srsran_ra_nr_fill_tb(&pdsch_cfg, &pdsch_cfg.grant, mcs, &pdsch_cfg.grant.tb[0]) < SRSRAN_SUCCESS) {
ERROR("Error filing tb");
goto clean_exit;
}
for (uint32_t tb = 0; tb < SRSRAN_MAX_TB; tb++) {
// Skip TB if no allocated
if (data_tx[tb] == NULL) {
continue;
}
srsran_random_byte_vector(rand_gen, data_tx[tb], pdsch_cfg.grant.tb[tb].tbs / 8);
pdsch_cfg.grant.tb[tb].softbuffer.tx = &softbuffer_tx;
}
// Compute PDCCH candidate locations
uint32_t L = 1;
uint32_t ncce_candidates[SRSRAN_SEARCH_SPACE_MAX_NOF_CANDIDATES_NR] = {};
int nof_candidates = srsran_pdcch_nr_locations_coreset(
coreset, search_space, pdsch_cfg.grant.rnti, L, SRSRAN_SLOT_NR_MOD(carrier.scs, slot.idx), ncce_candidates);
if (nof_candidates < SRSRAN_SUCCESS) {
ERROR("Error getting PDCCH candidates");
goto clean_exit;
}
// Setup DCI location
srsran_dci_location_t dci_location = {};
dci_location.ncce = ncce_candidates[0];
dci_location.L = L;
gettimeofday(&t[1], NULL);
if (work_gnb_dl(&gnb_dl, &slot, search_space, &dci_location, data_tx) < SRSRAN_ERROR) {
ERROR("Error running eNb DL");
goto clean_exit;
}
gettimeofday(&t[2], NULL);
get_time_interval(t);
pdsch_encode_us += (size_t)(t[0].tv_sec * 1e6 + t[0].tv_usec);
// Emulate channel delay
if (delay_n >= sf_len) {
ERROR("Delay exceeds SF length");
goto clean_exit;
}
srsran_vec_cf_copy(&buffer_ue[0][0], &buffer_gnb[0][delay_n], sf_len - delay_n);
srsran_vec_cf_copy(&buffer_ue[0][sf_len - delay_n], &buffer_gnb[0][0], delay_n);
// Emulate channel CFO
if (isnormal(cfo_hz) && ue_dl.fft[0].cfg.symbol_sz > 0) {
srsran_vec_apply_cfo(buffer_ue[0],
cfo_hz / (ue_dl.fft[0].cfg.symbol_sz * SRSRAN_SUBC_SPACING_NR(carrier.scs)),
buffer_ue[0],
sf_len);
}
for (uint32_t tb = 0; tb < SRSRAN_MAX_TB; tb++) {
pdsch_cfg.grant.tb[tb].softbuffer.rx = &softbuffer_rx;
srsran_softbuffer_rx_reset(pdsch_cfg.grant.tb[tb].softbuffer.rx);
}
gettimeofday(&t[1], NULL);
if (work_ue_dl(&ue_dl, &slot, &pdsch_res) < SRSRAN_SUCCESS) {
ERROR("Error running UE DL");
goto clean_exit;
}
gettimeofday(&t[2], NULL);
get_time_interval(t);
pdsch_decode_us += (size_t)(t[0].tv_sec * 1e6 + t[0].tv_usec);
if (pdsch_res.evm[0] > 0.02f) {
ERROR("Error PDSCH EVM is too high %f", pdsch_res.evm[0]);
goto clean_exit;
}
// Check CRC only for RV=0
if (rv_idx == 0) {
if (!pdsch_res.tb[0].crc) {
ERROR("Failed to match CRC; n_prb=%d; mcs=%d; TBS=%d;", n_prb, mcs, pdsch_cfg.grant.tb[0].tbs);
goto clean_exit;
}
if (memcmp(data_tx[0], data_rx[0], pdsch_cfg.grant.tb[0].tbs / 8) != 0) {
ERROR("Failed to match Tx/Rx data; n_prb=%d; mcs=%d; TBS=%d;", n_prb, mcs, pdsch_cfg.grant.tb[0].tbs);
printf("Tx data: ");
srsran_vec_fprint_byte(stdout, data_tx[0], pdsch_cfg.grant.tb[0].tbs / 8);
printf("Rx data: ");
srsran_vec_fprint_byte(stdout, data_rx[0], pdsch_cfg.grant.tb[0].tbs / 8);
goto clean_exit;
}
}
if (srsran_verbose >= SRSRAN_VERBOSE_INFO) {
char str[512];
srsran_pdsch_res_nr_t pdsch_res_vec[SRSRAN_MAX_CODEWORDS] = {};
pdsch_res_vec[0] = pdsch_res;
srsran_ue_dl_nr_pdsch_info(&ue_dl, &pdsch_cfg, pdsch_res_vec, str, (uint32_t)sizeof(str));
char str_extra[2048];
srsran_sch_cfg_nr_info(&pdsch_cfg, str_extra, (uint32_t)sizeof(str_extra));
INFO("PDSCH: %s\n%s", str, str_extra);
}
INFO("n_prb=%d; mcs=%d; TBS=%d; EVM=%f; PASSED!", n_prb, mcs, pdsch_cfg.grant.tb[0].tbs, pdsch_res.evm[0]);
// Count the Tx/Rx'd number of bits
nof_bits += pdsch_cfg.grant.tb[0].tbs;
}
}
}
printf("[Rates in Mbps] Granted Processed\n");
printf(" eNb: %5.1f %5.1f\n",
(double)nof_bits / (double)slot_count / 1000.0f,
(double)nof_bits / pdsch_encode_us);
printf(" UE: %5.1f %5.1f\n",
(double)nof_bits / (double)slot_count / 1000.0f,
(double)nof_bits / pdsch_decode_us);
ret = SRSRAN_SUCCESS;
clean_exit:
srsran_random_free(rand_gen);
srsran_gnb_dl_free(&gnb_dl);
srsran_ue_dl_nr_free(&ue_dl);
for (uint32_t i = 0; i < SRSRAN_MAX_CODEWORDS; i++) {
if (data_tx[i]) {
free(data_tx[i]);
}
if (data_rx[i]) {
free(data_rx[i]);
}
}
if (buffer_gnb[0]) {
free(buffer_gnb[0]);
}
if (buffer_ue[0]) {
free(buffer_ue[0]);
}
srsran_softbuffer_tx_free(&softbuffer_tx);
srsran_softbuffer_rx_free(&softbuffer_rx);
return ret;
}
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