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158 lines
4.3 KiB
C
158 lines
4.3 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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/******************************************************************************
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* File: pdsch_cfg_nr.h
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*
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* Description: Physical downlink shared channel configuration
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*
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* Reference:
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*****************************************************************************/
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#ifndef SRSLTE_PDSCH_CFG_NR_H
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#define SRSLTE_PDSCH_CFG_NR_H
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#include "srslte/phy/common/phy_common_nr.h"
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#include "srslte/phy/phch/sch_cfg_nr.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief PDSCH DMRS type
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*/
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typedef enum {
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srslte_dmrs_pdsch_type_1 = 0, // 1 pilot every 2 sub-carriers (default)
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srslte_dmrs_pdsch_type_2 // 2 consecutive pilots every 6 sub-carriers
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} srslte_dmrs_pdsch_type_t;
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/**
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* @brief PDSCH DMRS length in symbols
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*/
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typedef enum {
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srslte_dmrs_pdsch_len_1 = 0, // single, 1 symbol long (default)
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srslte_dmrs_pdsch_len_2 // double, 2 symbol long
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} srslte_dmrs_pdsch_len_t;
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/**
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* @brief Determines whether the first pilot goes into symbol index 2 or 3
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*/
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typedef enum {
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srslte_dmrs_pdsch_typeA_pos_2 = 0, // Start in slot symbol index 2 (default)
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srslte_dmrs_pdsch_typeA_pos_3 // Start in slot symbol index 3
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} srslte_dmrs_pdsch_typeA_pos_t;
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/**
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* @brief Determines additional symbols if possible to be added
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*/
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typedef enum {
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srslte_dmrs_pdsch_add_pos_2 = 0,
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srslte_dmrs_pdsch_add_pos_0,
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srslte_dmrs_pdsch_add_pos_1,
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srslte_dmrs_pdsch_add_pos_3
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} srslte_dmrs_pdsch_add_pos_t;
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/**
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* @brief Provides PDSCH DMRS configuration from higher layers
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* @remark Parameters described in TS 38.331 V15.10.0
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*/
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typedef struct {
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/// Parameters provided by IE DMRS-DownlinkConfig
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srslte_dmrs_pdsch_type_t type;
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srslte_dmrs_pdsch_add_pos_t additional_pos;
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srslte_dmrs_pdsch_len_t length;
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bool scrambling_id0_present;
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uint32_t scrambling_id0;
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bool scrambling_id1_present;
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uint32_t scrambling_id1;
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/// Parameters provided by ServingCellConfigCommon
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srslte_dmrs_pdsch_typeA_pos_t typeA_pos;
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bool lte_CRS_to_match_around;
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/// Parameters provided by FeatureSetDownlink-v1540
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bool additional_DMRS_DL_Alt;
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} srslte_pdsch_dmrs_cfg_t;
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/**
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* @brief flatten PDSCH time domain allocation parameters
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* @remark Described in TS 38.331 V15.10.0 Section PDSCH-TimeDomainResourceAllocationList
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*/
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typedef struct SRSLTE_API {
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/// Slot offset between DCI and its scheduled PDSCH
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uint32_t k0;
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/// PDSCH mapping type
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srslte_pdsch_mapping_type_t mapping_type;
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/// An index giving valid combinations of start symbol and length (jointly encoded) as start and length indicator
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/// (SLIV). The network configures the field so that the allocation does not cross the slot boundary
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uint32_t sliv;
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} srslte_pdsch_allocation_t;
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/**
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* @brief PDSCH grant information provided by the Downlink Control Information (DCI)
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*/
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typedef struct SRSLTE_API {
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/// UE identifier
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uint16_t rnti;
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/// Time domain resources
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uint32_t k0;
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uint32_t S;
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uint32_t L;
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srslte_pdsch_mapping_type_t mapping;
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/// Frequency domain resources
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bool prb_idx[SRSLTE_MAX_PRB_NR];
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/// Spatial resources
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uint32_t nof_layers;
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/// DMRS Scrambling sequence initialization (false: 0 or true: 1)
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bool n_scid;
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/// DCI information
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srslte_dci_format_nr_t dci_format;
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srslte_search_space_type_t dci_search_space;
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/// Transport block
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uint32_t tb_scaling_field;
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/// ....
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srslte_sch_tb_t tb[SRSLTE_MAX_TB];
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} srslte_pdsch_grant_nr_t;
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/**
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* @brief flatten PDSCH configuration parameters provided by higher layers
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* @remark Described in TS 38.331 V15.10.0 Section PDSCH-Config
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*/
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typedef struct SRSLTE_API {
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bool scrambling_id_present;
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uint32_t scambling_id; // Identifier used to initialize data scrambling (0-1023)
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srslte_pdsch_dmrs_cfg_t dmrs_cfg_typeA;
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srslte_pdsch_dmrs_cfg_t dmrs_cfg_typeB;
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srslte_sch_cfg_t sch_cfg; ///< Common shared channel parameters
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} srslte_pdsch_cfg_nr_t;
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#ifdef __cplusplus
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}
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#endif
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#endif // SRSLTE_PDSCH_CFG_NR_H
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