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123 lines
4.2 KiB
C
123 lines
4.2 KiB
C
/*
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* Copyright 2013-2019 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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/******************************************************************************
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* File: regs.h
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*
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* Description: Resource element mapping functions.
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*
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* Reference: 3GPP TS 36.211 version 10.0.0 Release 10
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*****************************************************************************/
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#ifndef SRSLTE_REGS_H
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#define SRSLTE_REGS_H
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common.h"
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#include <stdbool.h>
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#define REGS_PHICH_NSYM 12
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#define REGS_PHICH_REGS_X_GROUP 3
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#define REGS_PCFICH_NSYM 16
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#define REGS_PCFICH_NREGS 4
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#define REGS_RE_X_REG 4
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typedef struct SRSLTE_API {
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uint32_t k[4];
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uint32_t k0;
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uint32_t l;
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bool assigned;
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} srslte_regs_reg_t;
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typedef struct SRSLTE_API {
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uint32_t nof_regs;
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srslte_regs_reg_t** regs;
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} srslte_regs_ch_t;
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typedef struct SRSLTE_API {
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srslte_cell_t cell;
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uint32_t max_ctrl_symbols;
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uint32_t ngroups_phich;
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uint32_t ngroups_phich_m1;
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srslte_phich_r_t phich_res;
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srslte_phich_length_t phich_len;
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srslte_regs_ch_t pcfich;
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srslte_regs_ch_t* phich; // there are several phich
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srslte_regs_ch_t pdcch[3]; /* PDCCH indexing, permutation and interleaving is computed for
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the three possible CFI value */
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uint32_t phich_mi;
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uint32_t nof_regs;
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srslte_regs_reg_t* regs;
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} srslte_regs_t;
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SRSLTE_API int srslte_regs_init(srslte_regs_t* h, srslte_cell_t cell);
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SRSLTE_API int srslte_regs_init_opts(srslte_regs_t* h, srslte_cell_t cell, uint32_t phich_mi, bool mbsfn_or_sf1_6_tdd);
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SRSLTE_API void srslte_regs_free(srslte_regs_t* h);
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SRSLTE_API int srslte_regs_pdcch_nregs(srslte_regs_t* h, uint32_t cfi);
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SRSLTE_API int srslte_regs_pdcch_ncce(srslte_regs_t* h, uint32_t cfi);
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SRSLTE_API int srslte_regs_pcfich_put(srslte_regs_t* h, cf_t symbols[REGS_PCFICH_NSYM], cf_t* slot_symbols);
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SRSLTE_API int srslte_regs_pcfich_get(srslte_regs_t* h, cf_t* slot_symbols, cf_t symbols[REGS_PCFICH_NSYM]);
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SRSLTE_API uint32_t srslte_regs_phich_nregs(srslte_regs_t* h);
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SRSLTE_API int
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srslte_regs_phich_add(srslte_regs_t* h, cf_t symbols[REGS_PHICH_NSYM], uint32_t ngroup, cf_t* slot_symbols);
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SRSLTE_API int
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srslte_regs_phich_get(srslte_regs_t* h, cf_t* slot_symbols, cf_t symbols[REGS_PHICH_NSYM], uint32_t ngroup);
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SRSLTE_API uint32_t srslte_regs_phich_ngroups(srslte_regs_t* h);
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SRSLTE_API uint32_t srslte_regs_phich_ngroups_m1(srslte_regs_t* h);
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SRSLTE_API int srslte_regs_phich_reset(srslte_regs_t* h, cf_t* slot_symbols);
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SRSLTE_API int srslte_regs_pdcch_put(srslte_regs_t* h, uint32_t cfi, cf_t* d, cf_t* slot_symbols);
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SRSLTE_API int srslte_regs_pdcch_put_offset(srslte_regs_t* h,
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uint32_t cfi,
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cf_t* d,
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cf_t* slot_symbols,
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uint32_t start_reg,
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uint32_t nof_regs);
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SRSLTE_API int srslte_regs_pdcch_get(srslte_regs_t* h, uint32_t cfi, cf_t* slot_symbols, cf_t* d);
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SRSLTE_API int srslte_regs_pdcch_get_offset(srslte_regs_t* h,
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uint32_t cfi,
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cf_t* slot_symbols,
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cf_t* d,
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uint32_t start_reg,
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uint32_t nof_regs);
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#endif // SRSLTE_REGS_H
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