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sched: add fnc to map CQI to MCS 

Signed-off-by: Carlo Galiotto <carlo@srs.io>
This commit is contained in:
Carlo Galiotto 2021-12-09 15:51:51 +01:00 committed by carlo-gal
parent 40138c7125
commit a7255cfac6
4 changed files with 84 additions and 0 deletions
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2
lib/include/srsran/common/phy_cfg_nr.h
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@ -160,6 +160,8 @@ struct phy_cfg_nr_t {
* @return valid SSB configuration
*/
srsran_ssb_cfg_t get_ssb_cfg() const;
srsran_mcs_table_t get_mcs_table() const;
};
} // namespace srsran

6
lib/include/srsran/phy/phch/ra_nr.h
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@ -150,4 +150,10 @@ SRSRAN_API int srsran_ra_ul_set_grant_uci_nr(const srsran_carrier_nr_t* carri
*/
SRSRAN_API uint32_t srsran_ra_nr_type1_riv(uint32_t N_rb, uint32_t start_rb, uint32_t length_rb);
SRSRAN_API int srsran_ra_nr_cqi_to_mcs(uint8_t cqi,
srsran_csi_cqi_table_t cqi_table_idx,
srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type);
#endif // SRSRAN_RA_NR_H

5
lib/src/common/phy_cfg_nr.cc
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@ -367,4 +367,9 @@ srsran_ssb_cfg_t phy_cfg_nr_t::get_ssb_cfg() const
return ssb_cfg;
}
srsran_mcs_table_t phy_cfg_nr_t::get_mcs_table() const
{
return pdsch.mcs_table;
}
} // namespace srsran

71
lib/src/phy/phch/ra_nr.c
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@ -30,6 +30,7 @@ typedef struct {
#define RA_NR_MCS_SIZE_TABLE2 28
#define RA_NR_MCS_SIZE_TABLE3 29
#define RA_NR_TBS_SIZE_TABLE 93
#define RA_NR_CQI_SIZE_TABLE 16
#define RA_NR_BETA_OFFSET_HARQACK_SIZE 32
#define RA_NR_BETA_OFFSET_CSI_SIZE 32
@ -133,6 +134,46 @@ static const float ra_nr_beta_offset_csi_table[RA_NR_BETA_OFFSET_CSI_SIZE] = {
typedef enum { ra_nr_table_1 = 0, ra_nr_table_2, ra_nr_table_3 } ra_nr_table_t;
/**
* These tables map the CQI into the MCS, based on the spectral efficiency.
* The mapping works as follows:
* - select spectral efficiency from the CQI from tables Table 5.2.2.1-2, Table 5.2.2.1-3, Table 5.2.2.1-4,
* TS 38.214 V15.14.0
* - select MCS corresponding to same spectral efficiency from Table 5.1.3.1-1, Table 5.1.3.1-2, Table 5.1.3.1-3,
* TS 38.214 V15.14.0
* The indices C_M (e.g, 1_1, 1_3, 3_2, etc.) refer to the CQI and MCS table, respectively.
* C = 1 -> Table 5.2.2.1-2; C = 2 -> Table 5.2.2.1-3, C = 2 -> Table 5.2.2.1-4
* M = 1 -> Table 5.1.3.1-1; M = 2 -> Table 5.1.3.1-2; M = 3 -> Table 5.1.3.1-3
*/
#if 0
typedef const int nr_cqi_to_mcs_table[RA_NR_CQI_SIZE_TABLE];
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_1_1 = {-1, 0, 0, 2, 4, 6, 8, 11, 13, 15, 18, 20, 22, 24, 26, 28};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_2_1 = {-1, 0, 2, 6, 11, 13, 15, 18, 20, 22, 24, 26, 28, 28, 28, 28};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_3_1 = {-1, 0, 0, 0, 0, 2, 4, 6, 8, 11, 13, 15, 18, 20, 22, 24};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_1_2 = {-1, 0, 0, 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17, 19, 21};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_2_2 = {-1, 0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_3_2 = {-1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_1_3 = {-1, 4, 8, 12, 16, 18, 20, 22, 24, 26, 28, 28, 28, 28, 28, 28};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_2_3 = {-1, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28};
static nr_cqi_to_mcs_table ra_nr_cqi_to_mcs_table_3_3 = {-1, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28};
#endif
static int ra_nr_cqi_to_mcs_table[3][3][RA_NR_CQI_SIZE_TABLE] = {
/* ROW 1 - CQI Table 1 */
{/* MCS Table 1 */ {-1, 0, 0, 2, 4, 6, 8, 11, 13, 15, 18, 20, 22, 24, 26, 28},
/* MCS Table 2 */ {-1, 0, 0, 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17, 19, 21},
/* MCS Table 3 */ {-1, 4, 8, 12, 16, 18, 20, 22, 24, 26, 28, 28, 28, 28, 28, 28}},
/* ROW 2 - CQI Table 2 */
{/* MCS Table 1 */ {-1, 0, 2, 6, 11, 13, 15, 18, 20, 22, 24, 26, 28, 28, 28, 28},
/* MCS Table 2 */ {-1, 0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27},
/* MCS Table 3 */ {-1, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28}},
/* ROW 1 - CQI Table 3 */
{/* MCS Table 1 */ {-1, 0, 0, 0, 0, 2, 4, 6, 8, 11, 13, 15, 18, 20, 22, 24},
/* MCS Table 2 */ {-1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17},
/* MCS Table 3 */ {-1, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28}}};
static ra_nr_table_t ra_nr_select_table_pusch_noprecoding(srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
@ -1084,3 +1125,33 @@ int srsran_ra_ul_set_grant_uci_nr(const srsran_carrier_nr_t* carrier,
return SRSRAN_SUCCESS;
}
int srsran_ra_nr_cqi_to_mcs(uint8_t cqi,
srsran_csi_cqi_table_t cqi_table_idx,
srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type)
{
if (cqi >= RA_NR_CQI_SIZE_TABLE) {
ERROR("Invalid CQI (%u)", cqi);
return -1;
}
typedef enum { table_1 = 0, table_2, table_3, table_N } mcs_table_t;
// The following logic to select the MCS table is the same as in the function ra_nr_select_table_pdsch() in this same
// file
mcs_table_t mcs_table_idx;
if (mcs_table == srsran_mcs_table_256qam && dci_format == srsran_dci_format_nr_1_1 &&
rnti_type == srsran_rnti_type_c) {
mcs_table_idx = table_2;
} else if (mcs_table == srsran_mcs_table_qam64LowSE && search_space_type == srsran_search_space_type_ue &&
rnti_type == srsran_rnti_type_c) {
mcs_table_idx = table_3;
} else {
mcs_table_idx = table_1;
}
return ra_nr_cqi_to_mcs_table[cqi_table_idx][mcs_table_idx][cqi];
}