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srsLTE
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srsLTE/lib/include/srsran/phy/phch/phch_cfg_nr.h

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/**
*
* \section COPYRIGHT
*
* Copyright 2013-2021 Software Radio Systems Limited
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the distribution.
*
*/
/******************************************************************************
* File: pdsch_cfg_nr.h
*
* Description: Physical downlink shared channel configuration
*
* Reference:
*****************************************************************************/
#ifndef SRSRAN_PHCH_CFG_NR_H
#define SRSRAN_PHCH_CFG_NR_H
#include "srsran/phy/ch_estimation/csi_rs_cfg.h"
#include "srsran/phy/common/phy_common_nr.h"
#include "srsran/phy/phch/sch_cfg_nr.h"
#include "srsran/phy/phch/uci_cfg_nr.h"
#include "srsran/phy/utils/re_pattern.h"
/**
* @brief Specifies the maximum number of ZP-CSI-RS resources configured per slot. It is not implicitly specified in the
* TS.
*/
#define SRSRAN_PHCH_CFG_MAX_NOF_ZP_CSI_RS_RES_PER_SLOT 16
/**
* @brief PDSCH DMRS type
*/
typedef enum {
srsran_dmrs_sch_type_1 = 0, // 1 pilot every 2 sub-carriers (default)
srsran_dmrs_sch_type_2 // 2 consecutive pilots every 6 sub-carriers
} srsran_dmrs_sch_type_t;
/**
* @brief PDSCH DMRS length in symbols
*/
typedef enum {
srsran_dmrs_sch_len_1 = 0, // single, 1 symbol long (default)
srsran_dmrs_sch_len_2 // double, 2 symbol long
} srsran_dmrs_sch_len_t;
/**
* @brief Determines whether the first pilot goes into symbol index 2 or 3
*/
typedef enum {
srsran_dmrs_sch_typeA_pos_2 = 0, // Start in slot symbol index 2 (default)
srsran_dmrs_sch_typeA_pos_3 // Start in slot symbol index 3
} srsran_dmrs_sch_typeA_pos_t;
/**
* @brief Determines additional symbols if possible to be added
*/
typedef enum {
srsran_dmrs_sch_add_pos_2 = 0,
srsran_dmrs_sch_add_pos_0,
srsran_dmrs_sch_add_pos_1,
srsran_dmrs_sch_add_pos_3
} srsran_dmrs_sch_add_pos_t;
/**
* @brief Provides PDSCH DMRS configuration
* @remark Parameters described in TS 38.331 V15.10.0
*/
typedef struct {
/// Parameters provided by IE DMRS-DownlinkConfig
srsran_dmrs_sch_type_t type;
srsran_dmrs_sch_add_pos_t additional_pos;
srsran_dmrs_sch_len_t length;
bool scrambling_id0_present;
uint32_t scrambling_id0;
bool scrambling_id1_present;
uint32_t scrambling_id1;
/// Parameters provided by ServingCellConfigCommon
srsran_dmrs_sch_typeA_pos_t typeA_pos;
bool lte_CRS_to_match_around;
/// Parameters provided by FeatureSetDownlink-v1540
bool additional_DMRS_DL_Alt;
} srsran_dmrs_sch_cfg_t;
/**
* @brief Common flatten PDSCH and PUSCH time domain allocation parameters
* @remark Described in TS 38.331 V15.10.0 Section PDSCH-TimeDomainResourceAllocationList
* @remark Described in TS 38.331 V15.10.0 Section PUSCH-TimeDomainResourceAllocationList
*/
typedef struct SRSRAN_API {
/// For PDSCH Slot offset between DCI and its scheduled PDSCH
/// For PUSCH parameter K2
uint32_t k;
/// SCH mapping type
srsran_sch_mapping_type_t mapping_type;
/// An index giving valid combinations of start symbol and length (jointly encoded) as start and length indicator
/// (SLIV). The network configures the field so that the allocation does not cross the slot boundary
uint32_t sliv;
} srsran_sch_time_ra_t;
/**
* @brief PDSCH grant information provided by the Downlink Control Information (DCI)
*/
typedef struct SRSRAN_API {
/// UE identifier
uint16_t rnti;
srsran_rnti_type_t rnti_type;
/// Time domain resources
uint32_t k; // k0 for PDSCH, k2 for PUSCH
uint32_t S;
uint32_t L;
srsran_sch_mapping_type_t mapping;
/// Frequency domain resources
bool prb_idx[SRSRAN_MAX_PRB_NR];
uint32_t nof_prb;
/// Number of DMRS groups without data
/// Described in TS 38.214 Section 5.1.6.2
uint32_t nof_dmrs_cdm_groups_without_data;
/// Linear DMRS power offset. Zero means unset and it is equivalent to one.
/// For PUSCH, see TS 38.214 Table 6.2.2-1 for more information
float beta_dmrs;
/// Spatial resources
uint32_t nof_layers;
/// DMRS Scrambling sequence initialization (false: 0 or true: 1)
bool n_scid;
/// DCI information
srsran_dci_format_nr_t dci_format;
srsran_search_space_type_t dci_search_space;
/// Transport block
uint32_t tb_scaling_field;
/// ....
srsran_sch_tb_t tb[SRSRAN_MAX_TB];
} srsran_sch_grant_nr_t;
/**
* @brief Beta offset configuration provided from upper layers
* @remark Configure according to TS 38.331 BetaOffsets
*/
typedef struct {
uint32_t ack_index1; ///< Use for up to 2 HARQ-ACK bits. Set to 11 if absent.
uint32_t ack_index2; ///< Use for up to 11 HARQ-ACK bits. Set to 11 if absent.
uint32_t ack_index3; ///< Use for more than 11 HARQ-ACK bits. Set to 11 if absent.
uint32_t csi1_index1; ///< Use for up to 11 CSI bits. Set to 13 if absent.
uint32_t csi1_index2; ///< Use for more than 11 CSI bits. Set to 13 if absent.
uint32_t csi2_index1; ///< Use for up to 11 CSI bits. Set to 13 if absent.
uint32_t csi2_index2; ///< Use for more than 11 CSI bits. Set to 13 if absent.
/// Fix values for testing purposes
float fix_ack; ///< Set to a non-zero value for fixing a beta offset value
float fix_csi1;
float fix_csi2;
} srsran_beta_offsets_t;
/**
* @brief flatten SCH configuration parameters provided by higher layers
* @remark Described in TS 38.331 V15.10.0 Section PDSCH-Config
* @remark Described in TS 38.331 V15.10.0 Section PUSCH-Config
*/
typedef struct SRSRAN_API {
// Serving cell parameters
uint32_t scs_cfg; // Subcarrier spacing configuration
srsran_dmrs_sch_typeA_pos_t typeA_pos;
bool scrambling_id_present;
uint32_t scambling_id; // Identifier used to initialize data scrambling (0-1023)
srsran_mcs_table_t mcs_table;
srsran_dmrs_sch_type_t dmrs_type;
srsran_dmrs_sch_len_t dmrs_max_length;
struct {
srsran_dmrs_sch_add_pos_t additional_pos;
bool scrambling_id0_present;
uint32_t scrambling_id0;
bool scrambling_id1_present;
uint32_t scrambling_id1;
bool present;
} dmrs_typeA;
struct {
srsran_dmrs_sch_add_pos_t additional_pos;
bool scrambling_id0_present;
uint32_t scrambling_id0;
bool scrambling_id1_present;
uint32_t scrambling_id1;
bool present;
} dmrs_typeB;
srsran_sch_time_ra_t common_time_ra[SRSRAN_MAX_NOF_TIME_RA];
uint32_t nof_common_time_ra;
srsran_sch_time_ra_t dedicated_time_ra[SRSRAN_MAX_NOF_TIME_RA];
uint32_t nof_dedicated_time_ra;
bool rbg_size_cfg_1; ///< RBG size configuration (1 or 2)
srsran_resource_alloc_t alloc;
srsran_sch_cfg_t sch_cfg; ///< Common shared channel parameters
/// PDSCH Periodic ZP-CSI-RS set
srsran_csi_rs_zp_set_t p_zp_csi_rs_set;
/// PDSCH Periodic NZP-CSI-RS set, indexed by nzp-CSI-ResourceSetId
srsran_csi_rs_nzp_set_t nzp_csi_rs_sets[SRSRAN_PHCH_CFG_MAX_NOF_CSI_RS_SETS];
/// PUSCH only
srsran_beta_offsets_t beta_offsets; /// Semi-static only.
bool enable_transform_precoder; /// Enables transform precoding
float scaling; /// Indicates a scaling factor to limit the number of resource elements assigned to UCI on PUSCH.
} srsran_sch_hl_cfg_nr_t;
/**
* @brief Common NR-SCH (PDSCH and PUSCH for NR) configuration
*/
typedef struct SRSRAN_API {
bool scrambling_id_present;
uint32_t scambling_id; ///< Identifier used to initialize data scrambling (0-1023)
srsran_dmrs_sch_cfg_t dmrs; ///< DMRS configuration for this transmission
srsran_sch_grant_nr_t grant; ///< Actual SCH grant
srsran_sch_cfg_t sch_cfg; ///< Common shared channel parameters
srsran_re_pattern_list_t rvd_re; ///< Reserved resource elements, as pattern
/// PUSCH only parameters
srsran_uci_cfg_nr_t uci; ///< Uplink Control Information configuration
bool enable_transform_precoder;
bool freq_hopping_enabled;
} srsran_sch_cfg_nr_t;
SRSRAN_API uint32_t srsran_sch_cfg_nr_nof_re(const srsran_sch_cfg_nr_t* sch_cfg);
SRSRAN_API uint32_t srsran_sch_cfg_nr_info(const srsran_sch_cfg_nr_t* sch_cfg, char* str, uint32_t str_len);
#endif // SRSRAN_PHCH_CFG_NR_H
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