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211 lines
7.3 KiB
C
211 lines
7.3 KiB
C
/**
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* Copyright 2013-2022 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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#ifndef SRSRAN_CSI_CFG_H
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#define SRSRAN_CSI_CFG_H
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#include "pucch_cfg_nr.h"
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#include "srsran/config.h"
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#include <stdint.h>
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/**
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* @brief Maximum number of CSI report configurations defined in TS 38.331 maxNrofCSI-ReportConfigurations
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*/
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#define SRSRAN_CSI_MAX_NOF_REPORT 48
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/**
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* @brief Maximum number of supported simultaneous CSI reports in a single slot transmission
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*/
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#define SRSRAN_CSI_SLOT_MAX_NOF_REPORT 2
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/**
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* @brief Maximum number of CSI-RS resources defined in TS 38.331 maxNrofCSI-ResourceConfigurations
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*/
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#define SRSRAN_CSI_MAX_NOF_RESOURCES 112
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/**
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* @brief Maximum number of NZP-CSI-RS resources sets per config, defined in TS 38.331
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* maxNrofNZP-CSI-RS-ResourceSetsPerConfig
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*/
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#define SRSRAN_CSI_MAX_NOF_NZP_CSI_RS_RESOURCE_SETS_X_CONFIG 16
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/**
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* @brief Maximum number of CSI-SSB resources sets per config, defined in TS 38.331 maxNrofCSI-SSB-ResourceSetsPerConfig
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*/
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#define SRSRAN_CSI_MAX_NOF_CSI_SSB_RESOURCE_SETS_X_CONFIG 1
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/**
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* @brief Maximum number of CSI-SSB resources sets per config, defined in TS 38.331 maxNrofCSI-IM-ResourceSetsPerConfig
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*/
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#define SRSRAN_CSI_MAX_NOF_CSI_IM_RESOURCE_SETS_X_CONFIG 12
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/**
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* @brief CSI report types defined in TS 38.331 CSI-ReportConfig
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*/
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typedef enum SRSRAN_API {
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SRSRAN_CSI_REPORT_TYPE_NONE = 0,
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SRSRAN_CSI_REPORT_TYPE_PERIODIC,
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SRSRAN_CSI_REPORT_TYPE_SEMI_PERSISTENT_ON_PUCCH,
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SRSRAN_CSI_REPORT_TYPE_SEMI_PERSISTENT_ON_PUSCH,
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SRSRAN_CSI_REPORT_TYPE_APERIODIC,
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} srsran_csi_report_type_t;
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/**
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* @brief CSI report quantities defined in TS 38.331 CSI-ReportConfig
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*/
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typedef enum SRSRAN_API {
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SRSRAN_CSI_REPORT_QUANTITY_NONE = 0,
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SRSRAN_CSI_REPORT_QUANTITY_CRI_RI_PMI_CQI,
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SRSRAN_CSI_REPORT_QUANTITY_CRI_RI_I1,
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SRSRAN_CSI_REPORT_QUANTITY_CRI_RI_I1_CQI,
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SRSRAN_CSI_REPORT_QUANTITY_CRI_RI_CQI,
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SRSRAN_CSI_REPORT_QUANTITY_CRI_RSRP,
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SRSRAN_CSI_REPORT_QUANTITY_SSB_INDEX_RSRP,
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SRSRAN_CSI_REPORT_QUANTITY_CRI_RI_LI_PMI_CQI
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} srsran_csi_report_quantity_t;
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/**
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* @brief CSI report frequency configuration defined in TS 38.331 CSI-ReportConfig
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*/
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typedef enum SRSRAN_API {
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SRSRAN_CSI_REPORT_FREQ_WIDEBAND = 0,
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SRSRAN_CSI_REPORT_FREQ_SUBBAND
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} srsran_csi_report_freq_t;
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/**
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* @brief CQI table selection
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*/
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typedef enum SRSRAN_API {
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SRSRAN_CSI_CQI_TABLE_1 = 0,
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SRSRAN_CSI_CQI_TABLE_2,
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SRSRAN_CSI_CQI_TABLE_3,
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} srsran_csi_cqi_table_t;
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/**
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* @brief CSI periodic report configuration from upper layers
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* @remark Described in TS 38.331 CSI-ReportConfig
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*/
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typedef struct SRSRAN_API {
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uint32_t period; ///< Period in slots
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uint32_t offset; ///< Offset from beginning of the period in slots
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srsran_pucch_nr_resource_t resource; ///< PUCCH resource to use for reporting
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} srsran_csi_periodic_report_cfg_t;
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/**
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* @brief CSI report configuration from higher layers
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*/
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typedef struct SRSRAN_API {
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uint32_t channel_meas_id; ///< Channel measurement resource identifier
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uint32_t interf_meas_id; ///< Interference measurement resource identifier
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bool interf_meas_present; ///< Indicates if interference measurement identifier is present
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srsran_csi_report_type_t type; ///< CSI report type (none, periodic, semiPersistentOnPUCCH, ...)
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union {
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void* none; ///< Reserved, no configured
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srsran_csi_periodic_report_cfg_t periodic; ///< Used for periodic reporting
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// ... add here other types
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};
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srsran_csi_report_quantity_t quantity; ///< Report quantity
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srsran_csi_cqi_table_t cqi_table; ///< CQI table selection
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srsran_csi_report_freq_t freq_cfg; ///< Determine whether it is wideband or subband
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} srsran_csi_hl_report_cfg_t;
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/**
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* @brief CSI Resource configuration
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*/
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typedef struct SRSRAN_API {
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enum {
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SRSRAN_CSI_HL_RESOURCE_CFG_TYPE_NONE = 0,
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SRSRAN_CSI_HL_RESOURCE_CFG_TYPE_NZP_CSI_RS_SSB,
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SRSRAN_CSI_HL_RESOURCE_CFG_TYPE_IM
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} type;
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union {
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struct {
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uint32_t nzp_csi_rs_resource_set_id_list[SRSRAN_CSI_MAX_NOF_NZP_CSI_RS_RESOURCE_SETS_X_CONFIG];
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uint32_t nzp_csi_rs_resource_set_id_list_count;
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uint32_t csi_ssb_rs_resource_set_id_list[SRSRAN_CSI_MAX_NOF_CSI_SSB_RESOURCE_SETS_X_CONFIG];
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uint32_t csi_ssb_rs_resource_set_id_list_count;
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} nzp_csi_rs_ssb;
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struct {
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uint32_t resource_set_id_list[SRSRAN_CSI_MAX_NOF_CSI_IM_RESOURCE_SETS_X_CONFIG];
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uint32_t resource_set_id_list_count;
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} csi_im;
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};
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} srsran_csi_hl_resource_cfg_t;
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/**
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* @brief General CSI configuration provided by higher layers
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*/
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typedef struct SRSRAN_API {
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srsran_csi_hl_report_cfg_t reports[SRSRAN_CSI_MAX_NOF_REPORT]; ///< CSI report configuration indexed by
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///< reportConfigId
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srsran_csi_hl_resource_cfg_t csi_resources[SRSRAN_CSI_MAX_NOF_RESOURCES]; ///< Configured CSI resource settings,
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///< indexed by csi-ResourceConfigId
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} srsran_csi_hl_cfg_t;
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/**
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* @brief Generic CSI measurement structure, used for generating CSI reports
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*/
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typedef struct SRSRAN_API {
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uint32_t cri; ///< CSI-RS Resource Indicator
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float wideband_rsrp_dBm; ///< Measured NZP-CSI-RS RSRP (Ignore for IM-CSI-RS)
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float wideband_epre_dBm; ///< Measured EPRE
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float wideband_snr_db; ///< SNR calculated from NZP-CSI-RS RSRP and EPRE (Ignore for IM-CSI-RS)
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// Resource set context
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uint32_t nof_ports; ///< Number of antenna ports
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uint32_t K_csi_rs; ///< Number of CSI-RS in the corresponding resource set
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} srsran_csi_channel_measurements_t;
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/**
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* @brief CSI report configuration
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* @note An unset report is marked with `cfg.type = SRSRAN_CSI_REPORT_TYPE_NONE`
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*/
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typedef struct SRSRAN_API {
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srsran_csi_hl_report_cfg_t cfg; ///< Higher layer CSI report configuration
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// Resource set context
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uint32_t nof_ports; ///< Number of antenna ports
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uint32_t K_csi_rs; ///< Number of CSI-RS in the corresponding resource set
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bool has_part2; ///< Set to true if the report has part 2
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} srsran_csi_report_cfg_t;
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/**
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* @brief Wideband CSI report values
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*/
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typedef struct SRSRAN_API {
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uint32_t ri;
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uint32_t pmi;
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uint32_t cqi;
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} srsran_csi_report_wideband_cri_ri_pmi_cqi_t;
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/**
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* @brief Unified CSI report values
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*/
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typedef struct SRSRAN_API {
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uint32_t cri; ///< CSI-RS Resource Indicator
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union {
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void* none;
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srsran_csi_report_wideband_cri_ri_pmi_cqi_t wideband_cri_ri_pmi_cqi;
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};
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} srsran_csi_report_value_t;
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#endif // SRSRAN_CSI_CFG_H
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