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257 lines
8.7 KiB
C
257 lines
8.7 KiB
C
/**
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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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 SRSRAN_PHCH_CFG_NR_H
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#define SRSRAN_PHCH_CFG_NR_H
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#include "srsran/phy/ch_estimation/csi_rs_cfg.h"
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#include "srsran/phy/common/phy_common_nr.h"
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#include "srsran/phy/phch/sch_cfg_nr.h"
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#include "srsran/phy/phch/uci_cfg_nr.h"
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#include "srsran/phy/utils/re_pattern.h"
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/**
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* @brief Specifies the maximum number of ZP-CSI-RS resources configured per slot. It is not implicitly specified in the
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* TS.
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*/
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#define SRSRAN_PHCH_CFG_MAX_NOF_ZP_CSI_RS_RES_PER_SLOT 16
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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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srsran_dmrs_sch_type_1 = 0, // 1 pilot every 2 sub-carriers (default)
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srsran_dmrs_sch_type_2 // 2 consecutive pilots every 6 sub-carriers
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} srsran_dmrs_sch_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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srsran_dmrs_sch_len_1 = 0, // single, 1 symbol long (default)
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srsran_dmrs_sch_len_2 // double, 2 symbol long
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} srsran_dmrs_sch_len_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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srsran_dmrs_sch_add_pos_2 = 0,
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srsran_dmrs_sch_add_pos_0,
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srsran_dmrs_sch_add_pos_1,
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srsran_dmrs_sch_add_pos_3
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} srsran_dmrs_sch_add_pos_t;
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/**
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* @brief Provides PDSCH DMRS configuration
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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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srsran_dmrs_sch_type_t type;
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srsran_dmrs_sch_add_pos_t additional_pos;
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srsran_dmrs_sch_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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srsran_dmrs_sch_typeA_pos_t typeA_pos;
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bool lte_CRS_to_match_around;
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uint32_t reference_point_k_rb;
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/// Parameters provided by FeatureSetDownlink-v1540
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bool additional_DMRS_DL_Alt;
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} srsran_dmrs_sch_cfg_t;
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/**
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* @brief Common flatten PDSCH and PUSCH time domain allocation parameters
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* @remark Described in TS 38.331 V15.10.0 Section PDSCH-TimeDomainResourceAllocationList
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* @remark Described in TS 38.331 V15.10.0 Section PUSCH-TimeDomainResourceAllocationList
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*/
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typedef struct SRSRAN_API {
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/// For PDSCH Slot offset between DCI and its scheduled PDSCH
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/// For PUSCH parameter K2
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uint32_t k;
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/// SCH mapping type
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srsran_sch_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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} srsran_sch_time_ra_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 SRSRAN_API {
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/// UE identifier
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uint16_t rnti;
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srsran_rnti_type_t rnti_type;
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/// Time domain resources
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uint32_t k; // k0 for PDSCH, k2 for PUSCH
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uint32_t S;
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uint32_t L;
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srsran_sch_mapping_type_t mapping;
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/// Frequency domain resources
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bool prb_idx[SRSRAN_MAX_PRB_NR];
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uint32_t nof_prb;
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/// Number of DMRS groups without data
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/// Described in TS 38.214 Section 5.1.6.2
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uint32_t nof_dmrs_cdm_groups_without_data;
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/// Linear DMRS power offset. Zero means unset and it is equivalent to one.
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/// For PUSCH, see TS 38.214 Table 6.2.2-1 for more information
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float beta_dmrs;
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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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srsran_dci_format_nr_t dci_format;
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srsran_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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srsran_sch_tb_t tb[SRSRAN_MAX_TB];
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} srsran_sch_grant_nr_t;
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/**
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* @brief Beta offset configuration provided from upper layers
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* @remark Configure according to TS 38.331 BetaOffsets
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*/
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typedef struct {
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uint32_t ack_index1; ///< Use for up to 2 HARQ-ACK bits. Set to 11 if absent.
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uint32_t ack_index2; ///< Use for up to 11 HARQ-ACK bits. Set to 11 if absent.
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uint32_t ack_index3; ///< Use for more than 11 HARQ-ACK bits. Set to 11 if absent.
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uint32_t csi1_index1; ///< Use for up to 11 CSI bits. Set to 13 if absent.
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uint32_t csi1_index2; ///< Use for more than 11 CSI bits. Set to 13 if absent.
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uint32_t csi2_index1; ///< Use for up to 11 CSI bits. Set to 13 if absent.
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uint32_t csi2_index2; ///< Use for more than 11 CSI bits. Set to 13 if absent.
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/// Fix values for testing purposes
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float fix_ack; ///< Set to a non-zero value for fixing a beta offset value
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float fix_csi1;
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float fix_csi2;
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} srsran_beta_offsets_t;
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/**
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* @brief flatten SCH 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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* @remark Described in TS 38.331 V15.10.0 Section PUSCH-Config
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*/
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typedef struct SRSRAN_API {
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// Serving cell parameters
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uint32_t scs_cfg; // Subcarrier spacing configuration
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srsran_dmrs_sch_typeA_pos_t typeA_pos;
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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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srsran_mcs_table_t mcs_table;
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srsran_dmrs_sch_type_t dmrs_type;
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srsran_dmrs_sch_len_t dmrs_max_length;
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struct {
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srsran_dmrs_sch_add_pos_t additional_pos;
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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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bool present;
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} dmrs_typeA;
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struct {
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srsran_dmrs_sch_add_pos_t additional_pos;
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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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bool present;
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} dmrs_typeB;
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srsran_sch_time_ra_t common_time_ra[SRSRAN_MAX_NOF_TIME_RA];
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uint32_t nof_common_time_ra;
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srsran_sch_time_ra_t dedicated_time_ra[SRSRAN_MAX_NOF_TIME_RA];
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uint32_t nof_dedicated_time_ra;
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bool rbg_size_cfg_1; ///< RBG size configuration (1 or 2)
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srsran_resource_alloc_t alloc;
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srsran_sch_cfg_t sch_cfg; ///< Common shared channel parameters
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/// PDSCH Periodic ZP-CSI-RS set
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srsran_csi_rs_zp_set_t p_zp_csi_rs_set;
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/// PDSCH Periodic NZP-CSI-RS set, indexed by nzp-CSI-ResourceSetId
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srsran_csi_rs_nzp_set_t nzp_csi_rs_sets[SRSRAN_PHCH_CFG_MAX_NOF_CSI_RS_SETS];
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/// PUSCH only
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srsran_beta_offsets_t beta_offsets; /// Semi-static only.
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bool enable_transform_precoder; /// Enables transform precoding
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float scaling; /// Indicates a scaling factor to limit the number of resource elements assigned to UCI on PUSCH.
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} srsran_sch_hl_cfg_nr_t;
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/**
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* @brief Common NR-SCH (PDSCH and PUSCH for NR) configuration
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*/
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typedef struct SRSRAN_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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srsran_dmrs_sch_cfg_t dmrs; ///< DMRS configuration for this transmission
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srsran_sch_grant_nr_t grant; ///< Actual SCH grant
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srsran_sch_cfg_t sch_cfg; ///< Common shared channel parameters
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srsran_re_pattern_list_t rvd_re; ///< Reserved resource elements, as pattern
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/// PUSCH only parameters
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srsran_uci_cfg_nr_t uci; ///< Uplink Control Information configuration
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bool enable_transform_precoder;
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bool freq_hopping_enabled;
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} srsran_sch_cfg_nr_t;
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SRSRAN_API uint32_t srsran_sch_cfg_nr_nof_re(const srsran_sch_cfg_nr_t* sch_cfg);
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SRSRAN_API uint32_t srsran_sch_cfg_nr_info(const srsran_sch_cfg_nr_t* sch_cfg, char* str, uint32_t str_len);
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#endif // SRSRAN_PHCH_CFG_NR_H
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