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/**
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* Copyright 2013-2023 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: ra_dl.h
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*
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* Description: Implements Resource allocation Procedures for DL defined in Section 7
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*
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* Reference: 3GPP TS 36.213 version 10.0.1 Release 10
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*****************************************************************************/
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#ifndef SRSRAN_RA_DL_H
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#define SRSRAN_RA_DL_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "srsran/config.h"
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#include "srsran/phy/common/phy_common.h"
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#include "srsran/phy/phch/dci.h"
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#include "srsran/phy/phch/pdsch_cfg.h"
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#include "srsran/phy/phch/ra.h"
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/**************************************************
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* Structures used for Downlink Resource Allocation
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**************************************************/
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/** Functions to generate a grant from a received DCI */
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SRSRAN_API int srsran_ra_dl_dci_to_grant(const srsran_cell_t* cell,
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srsran_dl_sf_cfg_t* sf,
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srsran_tm_t tm,
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bool pdsch_use_tbs_index_alt,
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const srsran_dci_dl_t* dci,
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srsran_pdsch_grant_t* grant);
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SRSRAN_API int
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srsran_ra_dl_grant_to_grant_prb_allocation(const srsran_dci_dl_t* dci, srsran_pdsch_grant_t* grant, uint32_t nof_prb);
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/** Functions used by the eNodeB scheduler */
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SRSRAN_API uint32_t srsran_ra_dl_approx_nof_re(const srsran_cell_t* cell, uint32_t nof_prb, uint32_t nof_ctrl_symbols);
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SRSRAN_API uint32_t ra_re_x_prb(const srsran_cell_t* cell, srsran_dl_sf_cfg_t* sf, uint32_t slot, uint32_t prb_idx);
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SRSRAN_API uint32_t srsran_ra_dl_grant_nof_re(const srsran_cell_t* cell,
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srsran_dl_sf_cfg_t* sf,
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srsran_pdsch_grant_t* grant);
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/** Others */
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SRSRAN_API int srsran_dl_fill_ra_mcs(srsran_ra_tb_t* tb, int last_tbs, uint32_t nprb, bool pdsch_use_tbs_index_alt);
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SRSRAN_API void
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srsran_ra_dl_compute_nof_re(const srsran_cell_t* cell, srsran_dl_sf_cfg_t* sf, srsran_pdsch_grant_t* grant);
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SRSRAN_API uint32_t srsran_ra_dl_info(srsran_pdsch_grant_t* grant, char* info_str, uint32_t len);
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#endif // SRSRAN_RA_DL_H
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