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srsLTE
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Initial NZP-CSI default configuration from TS38.101-4

This commit is contained in:
Xavier Arteaga 2021-07-21 13:22:07 +02:00 committed by Xavier Arteaga
parent 64885a6741
commit 1b50758bd5
2 changed files with 142 additions and 1 deletions
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18
lib/include/srsran/common/phy_cfg_nr_default.h
View File

@ -56,7 +56,19 @@ public:
* - No DMRS dedicated configuration
*/
R_PDSCH_DEFAULT = 0,
} pdsch = R_PDSCH_DEFAULT;
/**
* @brief PDSCH parameters described in TS 38.101-4 Table 5.2.2.2.1-2 for the test described in table 5.2.2.2.1-3
*/
R_PDSCH_2_1_1_TDD,
/**
* @brief Invalid PDSCH reference channel
*/
R_PDSCH_COUNT
} pdsch = R_PDSCH_DEFAULT;
const std::vector<std::string> R_PDSCH_STRING = {"default", "R.PDSCH.2-1.1 TDD", "Invalid"};
enum {
/**
@ -98,6 +110,9 @@ public:
*/
R_PRACH_DEFAULT_LTE,
} prach = R_PRACH_DEFAULT_LTE;
reference_cfg_t() = default;
reference_cfg_t(const std::string& args);
};
phy_cfg_nr_default_t(const reference_cfg_t& reference_cfg);
@ -122,6 +137,7 @@ private:
* PDSCH make helper methods
*/
static void make_pdsch_default(srsran_sch_hl_cfg_nr_t& pdsch);
static void make_pdsch_2_1_1_tdd(const srsran_carrier_nr_t& carrier, srsran_sch_hl_cfg_nr_t& pdsch);
/**
* PUSCH make helper methods

125
lib/src/common/phy_cfg_nr_default.cc
View File

@ -11,10 +11,45 @@
*/
#include "srsran/common/phy_cfg_nr_default.h"
#include "srsran/common/string_helpers.h"
#include "srsran/srsran.h"
#include <cctype>
#include <list>
namespace srsran {
template <typename T>
T inc(T v)
{
return static_cast<T>(static_cast<int>(v) + 1);
}
phy_cfg_nr_default_t::reference_cfg_t::reference_cfg_t(const std::string& args)
{
std::list<std::string> param_list = {};
string_parse_list(args, ',', param_list);
for (std::string& e : param_list) {
std::list<std::string> param = {};
string_parse_list(e, '=', param);
// Skip if size is invalid
if (param.size() != 2) {
srsran_terminate("Invalid reference argument '%s'", e.c_str());
}
if (param.front() == "pdsch") {
for (pdsch = R_PDSCH_DEFAULT; pdsch < R_PDSCH_COUNT; pdsch = inc(pdsch)) {
if (R_PDSCH_STRING[pdsch] == param.back()) {
break;
}
}
srsran_assert(pdsch != R_PDSCH_COUNT, "Invalid PDSCH reference configuration '%s'", param.back().c_str());
} else {
srsran_terminate("Invalid %s reference component", param.front().c_str());
}
}
}
void phy_cfg_nr_default_t::make_carrier_custom_10MHz(srsran_carrier_nr_t& carrier)
{
carrier.nof_prb = 52;
@ -81,6 +116,91 @@ void phy_cfg_nr_default_t::make_pdsch_default(srsran_sch_hl_cfg_nr_t& pdsch)
pdsch.typeA_pos = srsran_dmrs_sch_typeA_pos_2;
}
void make_nzp_csi_rs_ts38101_table_5_2_1(const srsran_carrier_nr_t& carrier, srsran_csi_rs_nzp_set_t& trs)
{
// Set defaults
trs = {};
trs.trs_info = true;
trs.count = 4;
srsran_csi_rs_nzp_resource_t& res1 = trs.data[0];
srsran_csi_rs_nzp_resource_t& res2 = trs.data[1];
srsran_csi_rs_nzp_resource_t& res3 = trs.data[2];
srsran_csi_rs_nzp_resource_t& res4 = trs.data[3];
res1.resource_mapping.frequency_domain_alloc[0] = true;
res2.resource_mapping.frequency_domain_alloc[0] = true;
res3.resource_mapping.frequency_domain_alloc[0] = true;
res4.resource_mapping.frequency_domain_alloc[0] = true;
res1.resource_mapping.first_symbol_idx = 6;
res2.resource_mapping.first_symbol_idx = 10;
res3.resource_mapping.first_symbol_idx = 6;
res4.resource_mapping.first_symbol_idx = 10;
res1.resource_mapping.nof_ports = 1;
res2.resource_mapping.nof_ports = 1;
res3.resource_mapping.nof_ports = 1;
res4.resource_mapping.nof_ports = 1;
res1.resource_mapping.cdm = srsran_csi_rs_cdm_nocdm;
res2.resource_mapping.cdm = srsran_csi_rs_cdm_nocdm;
res3.resource_mapping.cdm = srsran_csi_rs_cdm_nocdm;
res4.resource_mapping.cdm = srsran_csi_rs_cdm_nocdm;
res1.resource_mapping.density = srsran_csi_rs_resource_mapping_density_three;
res2.resource_mapping.density = srsran_csi_rs_resource_mapping_density_three;
res3.resource_mapping.density = srsran_csi_rs_resource_mapping_density_three;
res4.resource_mapping.density = srsran_csi_rs_resource_mapping_density_three;
if (carrier.scs == srsran_subcarrier_spacing_15kHz) {
res1.periodicity.period = 20;
res2.periodicity.period = 20;
res3.periodicity.period = 20;
res4.periodicity.period = 20;
res1.periodicity.offset = 10;
res2.periodicity.offset = 10;
res3.periodicity.offset = 11;
res4.periodicity.offset = 11;
} else if (carrier.scs == srsran_subcarrier_spacing_30kHz) {
res1.periodicity.period = 40;
res2.periodicity.period = 40;
res3.periodicity.period = 40;
res4.periodicity.period = 40;
res1.periodicity.offset = 20;
res2.periodicity.offset = 20;
res3.periodicity.offset = 21;
res4.periodicity.offset = 21;
} else {
srsran_terminate("Invalid subcarrier spacing %d kHz", 15U << (uint32_t)carrier.scs);
}
res1.resource_mapping.freq_band = {0, carrier.nof_prb};
res2.resource_mapping.freq_band = {0, carrier.nof_prb};
res3.resource_mapping.freq_band = {0, carrier.nof_prb};
res4.resource_mapping.freq_band = {0, carrier.nof_prb};
}
void phy_cfg_nr_default_t::make_pdsch_2_1_1_tdd(const srsran_carrier_nr_t& carrier, srsran_sch_hl_cfg_nr_t& pdsch)
{
// Select PDSCH time resource allocation
pdsch.common_time_ra[0].mapping_type = srsran_sch_mapping_type_A;
pdsch.common_time_ra[0].k = 0;
pdsch.common_time_ra[0].sliv = srsran_ra_type2_to_riv(SRSRAN_NSYMB_PER_SLOT_NR - 2, 2, SRSRAN_NSYMB_PER_SLOT_NR);
pdsch.nof_common_time_ra = 1;
// Setup PDSCH DMRS
pdsch.typeA_pos = srsran_dmrs_sch_typeA_pos_2;
pdsch.dmrs_typeA.present = true;
pdsch.dmrs_typeA.additional_pos = srsran_dmrs_sch_add_pos_2;
// Make default CSI-RS for tracking from TS38101 Table 5.2.1
make_nzp_csi_rs_ts38101_table_5_2_1(carrier, pdsch.nzp_csi_rs_sets[0]);
}
void phy_cfg_nr_default_t::make_pusch_default(srsran_sch_hl_cfg_nr_t& pusch)
{
// Select PUSCH time resource allocation
@ -224,6 +344,11 @@ phy_cfg_nr_default_t::phy_cfg_nr_default_t(const reference_cfg_t& reference_cfg)
case reference_cfg_t::R_PDSCH_DEFAULT:
make_pdsch_default(pdsch);
break;
case reference_cfg_t::R_PDSCH_2_1_1_TDD:
make_pdsch_2_1_1_tdd(carrier, pdsch);
break;
case reference_cfg_t::R_PDSCH_COUNT:
srsran_terminate("Invalid PDSCH reference configuration");
}
switch (reference_cfg.pusch) {