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299 lines
9.7 KiB
C
299 lines
9.7 KiB
C
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE 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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* srsLTE 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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#ifndef SRSLTE_PHY_COMMON_NR_H
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#define SRSLTE_PHY_COMMON_NR_H
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#include "phy_common.h"
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#include <inttypes.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 Defines the number of symbols per slot. Defined by TS 38.211 v15.8.0 Table 4.3.2-1.
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*/
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#define SRSLTE_NSYMB_PER_SLOT_NR 14
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/**
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* @brief Defines the resource grid size in physical resource elements (frequency and time domain)
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*/
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#define SRSLTE_SLOT_LEN_RE_NR(nof_prb) (nof_prb * SRSLTE_NRE * SRSLTE_NSYMB_PER_SLOT_NR)
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#define SRSLTE_SLOT_MAX_LEN_RE_NR (SRSLTE_SLOT_LEN_RE_NR(SRSLTE_MAX_PRB_NR))
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#define SRSLTE_SLOT_MAX_NOF_BITS_NR (SRSLTE_SLOT_MAX_LEN_RE_NR * SRSLTE_MAX_QM)
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#define SRSLTE_MAX_LAYERS_NR 8
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/**
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* @brief Defines the maximum numerology supported. Defined by TS 38.211 v15.8.0 Table 4.3.2-1.
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*/
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#define SRSLTE_NR_MAX_NUMEROLOGY 4
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/**
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* @brief Defines the symbol duration, including cyclic prefix
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*/
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#define SRSLTE_SUBC_SPACING_NR(NUM) (15000U << (NUM))
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/**
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* @brief Defines the number of slots per SF. Defined by TS 38.211 v15.8.0 Table 4.3.2-1.
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*/
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#define SRSLTE_NSLOTS_PER_SF_NR(NUM) (1U << (NUM))
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/**
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* @brief Defines the number of slots per frame. Defined by TS 38.211 v15.8.0 Table 4.3.2-1.
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*/
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#define SRSLTE_NSLOTS_PER_FRAME_NR(NUM) (SRSLTE_NSLOTS_PER_SF_NR(NUM) * SRSLTE_NOF_SF_X_FRAME)
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/**
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* @brief Maximum Carrier identification value. Defined by TS 38.331 v15.10.0 as PhysCellId from 0 to 1007.
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*/
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#define SRSLTE_MAX_ID_NR 1007
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/**
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* @brief Maximum number of physical resource blocks (PRB) that a 5G NR can have. This is defined by TS 38.331 v15.10.0
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* as maxNrofPhysicalResourceBlocks
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*/
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#define SRSLTE_MAX_PRB_NR 275
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/**
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* @brief Maximum start sub-carrier index for the carrier relative point
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*/
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#define SRSLTE_MAX_START_NR 2199
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/**
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* @brief defines the maximum number of Aggregation levels: 1, 2, 4, 8 and 16
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*/
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#define SRSLTE_SEARCH_SPACE_NOF_AGGREGATION_LEVELS_NR 5
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/**
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* @brief defines the maximum number of candidates for a given Aggregation level
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*/
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#define SRSLTE_SEARCH_SPACE_MAX_NOF_CANDIDATES_NR 8
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/**
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* @brief defines the maximum number of resource elements per PRB
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* @remark Defined in TS 38.214 V15.10.0 5.1.3.2 Transport block size determination, point 1, second bullet
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*/
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#define SRSLTE_MAX_NRE_NR 156
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/**
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* @brief defines the maximum number of resource elements in a PDSCH transmission
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* @remark deduced from in TS 36.214 V15.10.0 5.1.3.2 Transport block size determination
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*/
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#define SRSLTE_PDSCH_MAX_RE_NR (SRSLTE_MAX_NRE_NR * SRSLTE_MAX_PRB_NR)
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/**
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* @brief Maximum number of PDSCH time domain resource allocations. This is defined by TS 38.331 v15.10.0
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* as maxNrofDL-Allocations
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*/
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#define SRSLTE_MAX_NOF_DL_ALLOCATION 16
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typedef enum SRSLTE_API {
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srslte_coreset_mapping_type_interleaved = 0,
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srslte_coreset_mapping_type_non_interleaved,
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} srslte_coreset_mapping_type_t;
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typedef enum SRSLTE_API {
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srslte_coreset_bundle_size_n2 = 0,
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srslte_coreset_bundle_size_n3,
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srslte_coreset_bundle_size_n6,
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} srslte_coreset_bundle_size_t;
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typedef enum SRSLTE_API {
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srslte_coreset_precoder_granularity_contiguous = 0,
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srslte_coreset_precoder_granularity_reg_bundle
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} srslte_coreset_precoder_granularity_t;
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/**
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* @brief PDSCH mapping type
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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 enum SRSLTE_API { srslte_pdsch_mapping_type_A = 0, srslte_pdsch_mapping_type_B } srslte_pdsch_mapping_type_t;
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typedef enum SRSLTE_API {
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srslte_search_space_type_common = 0,
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srslte_search_space_type_ue,
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} srslte_search_space_type_t;
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/**
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* @brief Indicates the MCS table the UE shall use for PDSCH and/or PUSCH without transform precoding
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*/
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typedef enum SRSLTE_API {
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srslte_mcs_table_64qam = 0,
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srslte_mcs_table_256qam,
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srslte_mcs_table_qam64LowSE,
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srslte_mcs_table_N
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} srslte_mcs_table_t;
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/**
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* @brief DCI formats
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* @remark Described in TS 38.212 V15.9.0 Section 7.3.1 DCI formats
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*/
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typedef enum SRSLTE_API {
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srslte_dci_format_nr_0_0 = 0, ///< @brief Scheduling of PUSCH in one cell
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srslte_dci_format_nr_0_1, ///< @brief Scheduling of PUSCH in one cell
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srslte_dci_format_nr_1_0, ///< @brief Scheduling of PDSCH in one cell
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srslte_dci_format_nr_1_1, ///< @brief Scheduling of PDSCH in one cell
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srslte_dci_format_nr_2_0, ///< @brief Notifying a group of UEs of the slot format
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srslte_dci_format_nr_2_1, ///< @brief Notifying a group of UEs of the PRB(s) and OFDM symbol(s) where UE may assume no
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///< transmission is intended for the UE
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srslte_dci_format_nr_2_2, ///< @brief Transmission of TPC commands for PUCCH and PUSCH
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srslte_dci_format_nr_2_3 ///< @brief Transmission of a group of TPC commands for SRS transmissions by one or more UEs
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} srslte_dci_format_nr_t;
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/**
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* @brief Overhead configuration provided by higher layers
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* @remark Described in TS 38.331 V15.10.0 PDSCH-ServingCellConfig
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* @remark Described in TS 38.331 V15.10.0 PUSCH-ServingCellConfig
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*/
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typedef enum SRSLTE_API {
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srslte_xoverhead_0 = 0,
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srslte_xoverhead_6,
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srslte_xoverhead_12,
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srslte_xoverhead_18
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} srslte_xoverhead_t;
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/**
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* @brief NR carrier parameters. It is a combination of fixed cell and bandwidth-part (BWP)
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*/
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typedef struct SRSLTE_API {
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uint32_t id;
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uint32_t numerology;
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uint32_t nof_prb;
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uint32_t start;
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} srslte_carrier_nr_t;
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/**
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* @brief NR Slot parameters. It contains parameters that change in a slot basis.
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*/
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typedef struct SRSLTE_API {
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/// Slot index in the radio frame
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uint32_t idx;
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/// Left for future parameters
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/// ...
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} srslte_dl_slot_cfg_t;
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/**
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* @brief Min number of OFDM symbols in a control resource set.
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*/
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#define SRSLTE_CORESET_DURATION_MIN 1
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/**
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* @brief Max number of OFDM symbols in a control resource set. Specified in TS 38.331 V15.10.0 as maxCoReSetDuration
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*/
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#define SRSLTE_CORESET_DURATION_MAX 3
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/**
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* @brief Number of possible CORESET frequency resources.
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*/
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#define SRSLTE_CORESET_FREQ_DOMAIN_RES_SIZE 45
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/**
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* @brief Max value for shift index
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*/
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#define SRSLTE_CORESET_SHIFT_INDEX_MAX (SRSLTE_CORESET_NOF_PRB_MAX - 1)
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/**
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* @brief CORESET parameters as defined in TS 38.331 V15.10.0 - ControlResourceSet
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*/
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typedef struct SRSLTE_API {
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srslte_coreset_mapping_type_t mapping_type;
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uint32_t id;
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uint32_t duration;
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bool freq_resources[SRSLTE_CORESET_FREQ_DOMAIN_RES_SIZE];
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srslte_coreset_bundle_size_t interleaver_size;
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bool dmrs_scrambling_id_present;
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uint32_t dmrs_scrambling_id;
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srslte_coreset_precoder_granularity_t precoder_granularity;
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srslte_coreset_bundle_size_t reg_bundle_size;
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uint32_t shift_index;
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/** Missing TCI parameters */
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} srslte_coreset_t;
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/**
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* @brief SearchSpace parameters as defined in TS 38.331 v15.10.0 SearchSpace sequence
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*/
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typedef struct SRSLTE_API {
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uint32_t id;
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uint32_t duration; // in slots
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srslte_search_space_type_t type;
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uint32_t nof_candidates[SRSLTE_SEARCH_SPACE_NOF_AGGREGATION_LEVELS_NR];
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} srslte_search_space_t;
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/**
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* @brief PDCCH configuration
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*/
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typedef struct SRSLTE_API {
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srslte_carrier_nr_t carrier;
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uint16_t rnti;
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srslte_coreset_t coreset;
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srslte_search_space_t search_space;
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uint32_t aggregation_level;
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uint32_t n_cce;
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} srslte_pdcch_cfg_nr_t;
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/**
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* @brief Calculates the bandwidth of a given CORESET in physical resource blocks (PRB) . This function uses the
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* frequency domain resources bit-map for counting the number of PRB.
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*
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* @attention Prior to this function call, the frequency domain resources bit-map shall be zeroed beyond the
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* carrier.nof_prb / 6 index, otherwise the CORESET bandwidth might be greater than the carrier.
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*
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* @param coreset provides the given CORESET configuration
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* @return The number of PRB that the CORESET takes in frequency domain
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*/
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SRSLTE_API uint32_t srslte_coreset_get_bw(const srslte_coreset_t* coreset);
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/**
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* @brief Calculates the number of Physical Resource Elements (time and frequency domain) that a given CORESET uses.
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* This function uses the frequency domain resources bit-map and duration to compute the number of symbols.
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*
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* @attention Prior to this function call, the frequency domain resources bit-map shall be zeroed beyond the
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* carrier.nof_prb / 6 index, otherwise the CORESET bandwidth might be greater than the carrier.
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*
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* @param coreset provides the given CORESET configuration
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* @return The number of resource elements that compose the coreset
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*/
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SRSLTE_API uint32_t srslte_coreset_get_sz(const srslte_coreset_t* coreset);
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/**
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* @brief Get the MCS table string
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* @param mcs_table MCS table value
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* @return Constant string with the MCS table name
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*/
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SRSLTE_API const char* srslte_mcs_table_to_str(srslte_mcs_table_t mcs_table);
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/**
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* @brief Get the MCS table value from a string
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* @param str Points to a given string
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* @return The MCS table value
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*/
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SRSLTE_API srslte_mcs_table_t srslte_mcs_table_from_str(const char* str);
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#ifdef __cplusplus
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}
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#endif
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#endif // SRSLTE_PHY_COMMON_NR_H
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