/** * Copyright 2013-2021 Software Radio Systems Limited * * This file is part of srsLTE. * * srsLTE 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. * * srsLTE 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/. * */ /****************************************************************************** * File: pdsch_cfg_nr.h * * Description: Physical downlink shared channel configuration * * Reference: *****************************************************************************/ #ifndef SRSLTE_PHCH_CFG_NR_H #define SRSLTE_PHCH_CFG_NR_H #include "srslte/phy/common/phy_common_nr.h" #include "srslte/phy/phch/sch_cfg_nr.h" /** * @brief PDSCH DMRS type */ typedef enum { srslte_dmrs_sch_type_1 = 0, // 1 pilot every 2 sub-carriers (default) srslte_dmrs_sch_type_2 // 2 consecutive pilots every 6 sub-carriers } srslte_dmrs_sch_type_t; /** * @brief PDSCH DMRS length in symbols */ typedef enum { srslte_dmrs_sch_len_1 = 0, // single, 1 symbol long (default) srslte_dmrs_sch_len_2 // double, 2 symbol long } srslte_dmrs_sch_len_t; /** * @brief Determines whether the first pilot goes into symbol index 2 or 3 */ typedef enum { srslte_dmrs_sch_typeA_pos_2 = 0, // Start in slot symbol index 2 (default) srslte_dmrs_sch_typeA_pos_3 // Start in slot symbol index 3 } srslte_dmrs_sch_typeA_pos_t; /** * @brief Determines additional symbols if possible to be added */ typedef enum { srslte_dmrs_sch_add_pos_2 = 0, srslte_dmrs_sch_add_pos_0, srslte_dmrs_sch_add_pos_1, srslte_dmrs_sch_add_pos_3 } srslte_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 srslte_dmrs_sch_type_t type; srslte_dmrs_sch_add_pos_t additional_pos; srslte_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 srslte_dmrs_sch_typeA_pos_t typeA_pos; bool lte_CRS_to_match_around; /// Parameters provided by FeatureSetDownlink-v1540 bool additional_DMRS_DL_Alt; } srslte_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 SRSLTE_API { /// For PDSCH Slot offset between DCI and its scheduled PDSCH /// For PUSCH parameter K2 uint32_t k; /// SCH mapping type srslte_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; } srslte_sch_time_ra_t; /** * @brief PDSCH grant information provided by the Downlink Control Information (DCI) */ typedef struct SRSLTE_API { /// UE identifier uint16_t rnti; srslte_rnti_type_t rnti_type; /// Time domain resources uint32_t k; // k0 for PDSCH, k2 for PUSCH uint32_t S; uint32_t L; srslte_sch_mapping_type_t mapping; /// Frequency domain resources bool prb_idx[SRSLTE_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 srslte_dci_format_nr_t dci_format; srslte_search_space_type_t dci_search_space; /// Transport block uint32_t tb_scaling_field; /// .... srslte_sch_tb_t tb[SRSLTE_MAX_TB]; } srslte_sch_grant_nr_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 SRSLTE_API { // Serving cell parameters uint32_t scs_cfg; // Subcarrier spacing configuration srslte_dmrs_sch_typeA_pos_t typeA_pos; bool scrambling_id_present; uint32_t scambling_id; // Identifier used to initialize data scrambling (0-1023) struct { srslte_dmrs_sch_type_t type; srslte_dmrs_sch_add_pos_t additional_pos; srslte_dmrs_sch_len_t length; bool scrambling_id0_present; uint32_t scrambling_id0; bool scrambling_id1_present; uint32_t scrambling_id1; bool present; } dmrs_typeA; struct { srslte_dmrs_sch_type_t type; srslte_dmrs_sch_add_pos_t additional_pos; srslte_dmrs_sch_len_t length; bool scrambling_id0_present; uint32_t scrambling_id0; bool scrambling_id1_present; uint32_t scrambling_id1; bool present; } dmrs_typeB; srslte_sch_time_ra_t common_time_ra[SRSLTE_MAX_NOF_DL_ALLOCATION]; uint32_t nof_common_time_ra; srslte_sch_time_ra_t dedicated_time_ra[SRSLTE_MAX_NOF_DL_ALLOCATION]; uint32_t nof_dedicated_time_ra; bool rbg_size_cfg_1; ///< RBG size configuration (1 or 2) srslte_sch_cfg_t sch_cfg; ///< Common shared channel parameters } srslte_sch_hl_cfg_nr_t; /** * @brief Common NR-SCH (PDSCH and PUSCH for NR) configuration */ typedef struct SRSLTE_API { bool scrambling_id_present; uint32_t scambling_id; // Identifier used to initialize data scrambling (0-1023) srslte_dmrs_sch_cfg_t dmrs; srslte_sch_grant_nr_t grant; srslte_sch_cfg_t sch_cfg; ///< Common shared channel parameters /// Uplink params bool enable_transform_precoder; } srslte_sch_cfg_nr_t; #endif // SRSLTE_PHCH_CFG_NR_H