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108 lines
3.4 KiB
C
108 lines
3.4 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 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: ra.h
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*
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* Description: Implements Resource allocation Procedures common in for DL and UL
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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 SRSLTE_RA_H
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#define SRSLTE_RA_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common.h"
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/**************************************************
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* Common structures used for Resource Allocation
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**************************************************/
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typedef struct SRSLTE_API {
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srslte_mod_t mod;
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int tbs;
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int rv;
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uint32_t nof_bits;
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uint32_t cw_idx;
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bool enabled;
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// this is for debugging and metrics purposes
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uint32_t mcs_idx;
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} srslte_ra_tb_t;
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typedef enum SRSLTE_API {
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SRSLTE_RA_ALLOC_TYPE0 = 0,
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SRSLTE_RA_ALLOC_TYPE1 = 1,
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SRSLTE_RA_ALLOC_TYPE2 = 2
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} srslte_ra_type_t;
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typedef struct SRSLTE_API {
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uint32_t rbg_bitmask;
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} srslte_ra_type0_t;
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typedef struct SRSLTE_API {
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uint32_t vrb_bitmask;
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uint32_t rbg_subset;
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bool shift;
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} srslte_ra_type1_t;
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typedef struct SRSLTE_API {
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uint32_t riv; // if L_crb==0, DCI message packer will take this value directly
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enum { SRSLTE_RA_TYPE2_NPRB1A_2 = 0, SRSLTE_RA_TYPE2_NPRB1A_3 = 1 } n_prb1a;
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enum { SRSLTE_RA_TYPE2_NG1 = 0, SRSLTE_RA_TYPE2_NG2 = 1 } n_gap;
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enum { SRSLTE_RA_TYPE2_LOC = 0, SRSLTE_RA_TYPE2_DIST = 1 } mode;
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} srslte_ra_type2_t;
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#define SRSLTE_RA_NOF_TBS_IDX 34
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SRSLTE_API uint32_t srslte_ra_type0_P(uint32_t nof_prb);
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SRSLTE_API uint32_t srslte_ra_type2_n_vrb_dl(uint32_t nof_prb, bool ngap_is_1);
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SRSLTE_API uint32_t srslte_ra_type2_n_rb_step(uint32_t nof_prb);
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SRSLTE_API uint32_t srslte_ra_type2_ngap(uint32_t nof_prb, bool ngap_is_1);
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SRSLTE_API uint32_t srslte_ra_type1_N_rb(uint32_t nof_prb);
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SRSLTE_API uint32_t srslte_ra_type2_to_riv(uint32_t L_crb, uint32_t RB_start, uint32_t nof_prb);
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SRSLTE_API void
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srslte_ra_type2_from_riv(uint32_t riv, uint32_t* L_crb, uint32_t* RB_start, uint32_t nof_prb, uint32_t nof_vrb);
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SRSLTE_API int srslte_ra_tbs_idx_from_mcs(uint32_t mcs, bool use_tbs_index_alt, bool is_ul);
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SRSLTE_API srslte_mod_t srslte_ra_dl_mod_from_mcs(uint32_t mcs, bool use_tbs_index_alt);
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SRSLTE_API srslte_mod_t srslte_ra_ul_mod_from_mcs(uint32_t mcs);
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SRSLTE_API int srslte_ra_mcs_from_tbs_idx(uint32_t tbs_idx, bool use_tbs_index_alt, bool is_ul);
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SRSLTE_API int srslte_ra_tbs_from_idx(uint32_t tbs_idx, uint32_t n_prb);
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SRSLTE_API int srslte_ra_tbs_to_table_idx(uint32_t tbs, uint32_t n_prb);
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#endif // SRSLTE_RA_H
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