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srsRAN_4G/test/phy/nr_phy_test.cc

290 lines
14 KiB
C++

/**
* 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 "dummy_gnb_stack.h"
#include "dummy_ue_stack.h"
#include "srsran/common/phy_cfg_nr_default.h"
#include "srsran/common/test_common.h"
#include "test_bench.h"
#include <boost/program_options.hpp>
#include <iostream>
// shorten boost program options namespace
namespace bpo = boost::program_options;
test_bench::args_t::args_t(int argc, char** argv)
{
std::string reference_cfg_str = "";
bpo::options_description options("Test bench options");
bpo::options_description options_gnb_stack("gNb stack and scheduling related options");
bpo::options_description options_gnb_phy("gNb PHY related options");
bpo::options_description options_ue_stack("UE stack options");
bpo::options_description options_ue_phy("UE stack options");
uint16_t rnti = 0x1234;
gnb_stack.pdsch.slots = "0,1,2,3,4,5";
gnb_stack.pusch.slots = "6,7,8,9";
// clang-format off
options.add_options()
("rnti", bpo::value<uint16_t>(&rnti)->default_value(rnti), "UE RNTI")
("duration", bpo::value<uint64_t>(&durations_slots)->default_value(durations_slots), "Test duration in slots")
("lib.log.level", bpo::value<std::string>(&phy_lib_log_level)->default_value(phy_lib_log_level), "PHY librray log level")
("reference", bpo::value<std::string>(&reference_cfg_str)->default_value(reference_cfg_str), "Reference PHY configuration arguments")
;
options_gnb_stack.add_options()
("gnb.stack.pdcch.aggregation_level", bpo::value<uint32_t>(&gnb_stack.pdcch_aggregation_level)->default_value(gnb_stack.pdcch_aggregation_level), "PDCCH aggregation level")
("gnb.stack.pdsch.candidate", bpo::value<uint32_t>(&gnb_stack.pdcch_dl_candidate)->default_value(gnb_stack.pdcch_dl_candidate), "PDCCH candidate index for PDSCH")
("gnb.stack.pdsch.start", bpo::value<uint32_t>(&gnb_stack.pdsch.rb_start)->default_value(0), "PDSCH scheduling frequency allocation start")
("gnb.stack.pdsch.length", bpo::value<uint32_t>(&gnb_stack.pdsch.rb_length)->default_value(gnb_stack.pdsch.rb_length), "PDSCH scheduling frequency allocation length")
("gnb.stack.pdsch.slots", bpo::value<std::string>(&gnb_stack.pdsch.slots)->default_value(gnb_stack.pdsch.slots), "Slots enabled for PDSCH")
("gnb.stack.pdsch.mcs", bpo::value<uint32_t>(&gnb_stack.pdsch.mcs)->default_value(gnb_stack.pdsch.mcs), "PDSCH scheduling modulation code scheme")
("gnb.stack.pusch.candidate", bpo::value<uint32_t>(&gnb_stack.pdcch_ul_candidate)->default_value(gnb_stack.pdcch_ul_candidate), "PDCCH candidate index for PUSCH")
("gnb.stack.pusch.start", bpo::value<uint32_t>(&gnb_stack.pusch.rb_start)->default_value(0), "PUSCH scheduling frequency allocation start")
("gnb.stack.pusch.length", bpo::value<uint32_t>(&gnb_stack.pusch.rb_length)->default_value(gnb_stack.pusch.rb_length), "PUSCH scheduling frequency allocation length")
("gnb.stack.pusch.slots", bpo::value<std::string>(&gnb_stack.pusch.slots)->default_value(gnb_stack.pusch.slots), "Slots enabled for PUSCH")
("gnb.stack.pusch.mcs", bpo::value<uint32_t>(&gnb_stack.pusch.mcs)->default_value(gnb_stack.pusch.mcs), "PUSCH scheduling modulation code scheme")
("gnb.stack.log.level", bpo::value<std::string>(&gnb_stack.log_level)->default_value(gnb_stack.log_level), "Stack log level")
("gnb.stack.use_dummy_sched", bpo::value<bool>(&gnb_stack.use_dummy_sched)->default_value(true), "Use dummy or real NR scheduler")
;
options_gnb_phy.add_options()
("gnb.phy.nof_threads", bpo::value<uint32_t>(&gnb_phy.nof_phy_threads)->default_value(1), "Number of threads")
("gnb.phy.log.level", bpo::value<std::string>(&gnb_phy.log.phy_level)->default_value("warning"), "gNb PHY log level")
("gnb.phy.log.hex_limit", bpo::value<int>(&gnb_phy.log.phy_hex_limit)->default_value(0), "gNb PHY log hex limit")
("gnb.phy.log.id_preamble", bpo::value<std::string>(&gnb_phy.log.id_preamble)->default_value("GNB/"), "gNb PHY log ID preamble")
("gnb.phy.pusch.max_iter", bpo::value<uint32_t>(&gnb_phy.pusch_max_nof_iter)->default_value(10), "PUSCH LDPC max number of iterations")
;
options_ue_phy.add_options()
("ue.phy.nof_threads", bpo::value<uint32_t>(&ue_phy.nof_phy_threads)->default_value(1), "Number of threads")
("ue.phy.log.level", bpo::value<std::string>(&ue_phy.log.phy_level)->default_value("warning"), "UE PHY log level")
("ue.phy.log.hex_limit", bpo::value<int>(&ue_phy.log.phy_hex_limit)->default_value(0), "UE PHY log hex limit")
("ue.phy.log.id_preamble", bpo::value<std::string>(&ue_phy.log.id_preamble)->default_value(" UE/"), "UE PHY log ID preamble")
;
options_ue_stack.add_options()
("ue.stack.sr.period", bpo::value<uint32_t>(&ue_stack.sr_period)->default_value(ue_stack.sr_period), "SR period in number of opportunities. Set 0 to disable and 1 for all.")
("ue.stack.prach.period", bpo::value<uint32_t>(&ue_stack.prach_period)->default_value(ue_stack.prach_period), "PRACH period in SFN. Set 0 to disable and 1 for all.")
("ue.stack.prach.preamble", bpo::value<uint32_t>(&ue_stack.prach_preamble)->default_value(ue_stack.prach_preamble), "PRACH preamble. Set 0 to disable and 1 for all.")
;
options.add(options_gnb_stack).add(options_gnb_phy).add(options_ue_stack).add(options_ue_phy).add_options()
("help", "Show this message")
;
// clang-format on
bpo::variables_map vm;
try {
bpo::store(bpo::command_line_parser(argc, argv).options(options).run(), vm);
bpo::notify(vm);
} catch (bpo::error& e) {
std::cerr << e.what() << std::endl;
return;
}
// help option was given or error - print usage and exit
if (vm.count("help")) {
std::cout << "Usage: " << argv[0] << " [OPTIONS] config_file" << std::endl << std::endl;
std::cout << options << std::endl << std::endl;
return;
}
// Load default reference configuration
phy_cfg = srsran::phy_cfg_nr_default_t(srsran::phy_cfg_nr_default_t::reference_cfg_t(reference_cfg_str));
// Calculate sampling rate in Hz
srate_hz = (double)(srsran_min_symbol_sz_rb(phy_cfg.carrier.nof_prb) * SRSRAN_SUBC_SPACING_NR(phy_cfg.carrier.scs));
cell_list.resize(1);
cell_list[0].carrier = phy_cfg.carrier;
cell_list[0].rf_port = 0;
cell_list[0].cell_id = 0;
cell_list[0].pdcch = phy_cfg.pdcch;
ue_stack.rnti = rnti;
gnb_stack.rnti = rnti;
gnb_stack.phy_cfg = phy_cfg;
if (gnb_stack.pdsch.rb_length == 0) {
gnb_stack.pdsch.rb_length = phy_cfg.carrier.nof_prb;
gnb_stack.pdsch.rb_start = 0;
}
if (gnb_stack.pusch.rb_length == 0) {
gnb_stack.pusch.rb_length = phy_cfg.carrier.nof_prb;
gnb_stack.pdsch.rb_start = 0;
}
// Flag configuration as valid
valid = true;
}
int main(int argc, char** argv)
{
srslog::init();
// Parse test bench arguments
test_bench::args_t args(argc, argv);
// Parse arguments
TESTASSERT(args.valid);
// Create test bench
test_bench tb(args);
// Assert bench is initialised correctly
TESTASSERT(tb.is_initialised());
// Run per TTI basis
while (tb.run_tti()) {
; // Do nothing
}
// Stop test bench
tb.stop();
// Flush log
srslog::flush();
// Retrieve MAC metrics
test_bench::metrics_t metrics = tb.get_gnb_metrics();
// Print PDSCH metrics if scheduled
if (metrics.gnb_stack.mac.tx_pkts > 0) {
float pdsch_bler = 0.0f;
pdsch_bler = (float)metrics.gnb_stack.mac.tx_errors / (float)metrics.gnb_stack.mac.tx_pkts;
float pdsch_shed_rate = 0.0f;
pdsch_shed_rate = (float)metrics.gnb_stack.mac.tx_brate / (float)metrics.gnb_stack.mac.tx_pkts / 1000.0f;
srsran::console("PDSCH:\n");
srsran::console(" Count: %d\n", metrics.gnb_stack.mac.tx_pkts);
srsran::console(" BLER: %f\n", pdsch_bler);
srsran::console(" Sched Rate: %f Mbps\n", pdsch_shed_rate);
srsran::console(" Net Rate: %f Mbps\n", (1.0f - pdsch_bler) * pdsch_shed_rate);
srsran::console(" Retx Rate: %f Mbps\n", pdsch_bler * pdsch_shed_rate);
srsran::console("\n");
}
// Print PUSCH metrics if scheduled
if (metrics.gnb_stack.mac.rx_pkts > 0) {
float pusch_bler = 0.0f;
if (metrics.gnb_stack.mac.rx_pkts != 0) {
pusch_bler = (float)metrics.gnb_stack.mac.rx_errors / (float)metrics.gnb_stack.mac.rx_pkts;
}
float pusch_shed_rate = 0.0f;
if (metrics.gnb_stack.mac.rx_pkts != 0) {
pusch_shed_rate = (float)metrics.gnb_stack.mac.rx_brate / (float)metrics.gnb_stack.mac.rx_pkts / 1000.0f;
}
srsran::console("PUSCH:\n");
srsran::console(" Count: %d\n", metrics.gnb_stack.mac.rx_pkts);
srsran::console(" BLER: %f\n", pusch_bler);
srsran::console(" Sched Rate: %f Mbps\n", pusch_shed_rate);
srsran::console(" Net Rate: %f Mbps\n", (1.0f - pusch_bler) * pusch_shed_rate);
srsran::console(" Retx Rate: %f Mbps\n", pusch_bler * pusch_shed_rate);
srsran::console("\n");
}
// Print PRACH
if (metrics.ue_stack.prach.size() > 0) {
srsran::console("PRACH:\n");
srsran::console(" UE transmitted:\n");
srsran::console(" +------------+------------+\n");
srsran::console(" | %10s | %10s |\n", "preamble", "count");
srsran::console(" +------------+------------+\n");
for (const auto& p : metrics.ue_stack.prach) {
srsran::console(" | %10d | %10d |\n", p.first, p.second.count);
// Ensure the detected count matches with transmission
TESTASSERT(metrics.gnb_stack.prach.count(p.first));
TESTASSERT(metrics.gnb_stack.prach[p.first].count == p.second.count);
}
srsran::console(" +------------+------------+\n\n");
srsran::console(" GNB detected:\n");
srsran::console(" +------------+------------+------------+\n");
srsran::console(" | %10s | %10s | %10s |\n", "preamble", "count", "avg TA");
srsran::console(" +------------+------------+------------+\n");
for (const auto& p : metrics.gnb_stack.prach) {
srsran::console(" | %10d | %10d | %10.1f |\n", p.first, p.second.count, p.second.avg_ta);
// Ensure all detected preambles were transmitted
TESTASSERT(metrics.ue_stack.prach.count(p.first) > 0);
}
srsran::console(" +------------+------------+------------+\n\n");
}
// Print PUCCH
if (metrics.gnb_stack.pucch.count > 0) {
srsran::console("PUCCH DMRS Receiver metrics:\n");
srsran::console(" +------------+------------+------------+------------+\n");
srsran::console(" | %10s | %10s | %10s | %10s |\n", "Measure", "Average", "Min", "Max");
srsran::console(" +------------+------------+------------+------------+\n");
srsran::console(" | %10s | %+10.2f | %+10.2f | %+10.2f |\n",
"EPRE (dB)",
metrics.gnb_stack.pucch.epre_db_avg,
metrics.gnb_stack.pucch.epre_db_min,
metrics.gnb_stack.pucch.epre_db_min);
srsran::console(" | %10s | %+10.2f | %+10.2f | %+10.2f |\n",
"RSRP (dB)",
metrics.gnb_stack.pucch.rsrp_db_avg,
metrics.gnb_stack.pucch.rsrp_db_min,
metrics.gnb_stack.pucch.rsrp_db_max);
srsran::console(" | %10s | %+10.2f | %+10.2f | %+10.2f |\n",
"SINR (dB)",
metrics.gnb_stack.pucch.snr_db_avg,
metrics.gnb_stack.pucch.snr_db_min,
metrics.gnb_stack.pucch.snr_db_max);
srsran::console(" | %10s | %+10.2f | %+10.2f | %+10.2f |\n",
"TA (us)",
metrics.gnb_stack.pucch.ta_us_avg,
metrics.gnb_stack.pucch.ta_us_min,
metrics.gnb_stack.pucch.ta_us_max);
srsran::console(" +------------+------------+------------+------------+\n");
}
// Print SR
if (metrics.ue_stack.sr_count > 0) {
srsran::console("SR:\n");
srsran::console(" +------------+------------+\n");
srsran::console(" | %10s | %10s |\n", "Transmit'd", "Received");
srsran::console(" +------------+------------+\n");
srsran::console(" | %10d | %10d |\n", metrics.ue_stack.sr_count, metrics.gnb_stack.sr_count);
srsran::console(" +------------+------------+\n");
}
// Assert metrics
TESTASSERT(metrics.gnb_stack.mac.tx_errors == 0);
TESTASSERT(metrics.gnb_stack.mac.rx_errors == 0);
TESTASSERT(metrics.ue_stack.sr_count == metrics.gnb_stack.sr_count);
// If reached here, the test is successful
return SRSRAN_SUCCESS;
}