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161 lines
5.8 KiB
C
161 lines
5.8 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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/******************************************************************************
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* File: enb_dl.h
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*
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* Description: ENB downlink object.
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*
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* This module is a frontend to all the downlink data and control
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* channel processing modules for the ENB transmitter side.
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*
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* Reference:
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*****************************************************************************/
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#ifndef SRSLTE_ENB_DL_H
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#define SRSLTE_ENB_DL_H
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#include <stdbool.h>
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#include "srslte/phy/ch_estimation/refsignal_dl.h"
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#include "srslte/phy/common/phy_common.h"
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#include "srslte/phy/dft/ofdm.h"
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#include "srslte/phy/phch/dci.h"
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#include "srslte/phy/phch/pbch.h"
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#include "srslte/phy/phch/pcfich.h"
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#include "srslte/phy/phch/pdcch.h"
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#include "srslte/phy/phch/pdsch.h"
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#include "srslte/phy/phch/pdsch_cfg.h"
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#include "srslte/phy/phch/phich.h"
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#include "srslte/phy/phch/pmch.h"
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#include "srslte/phy/phch/ra.h"
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#include "srslte/phy/phch/regs.h"
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#include "srslte/phy/sync/pss.h"
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#include "srslte/phy/sync/sss.h"
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#include "srslte/phy/enb/enb_ul.h"
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#include "srslte/phy/ue/ue_dl.h"
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#include "srslte/phy/utils/debug.h"
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#include "srslte/phy/utils/vector.h"
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#include "srslte/config.h"
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typedef struct SRSLTE_API {
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srslte_cell_t cell;
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srslte_dl_sf_cfg_t dl_sf;
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cf_t* sf_symbols[SRSLTE_MAX_PORTS];
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srslte_ofdm_t ifft[SRSLTE_MAX_PORTS];
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srslte_ofdm_t ifft_mbsfn;
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srslte_pbch_t pbch;
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srslte_pcfich_t pcfich;
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srslte_regs_t regs;
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srslte_pdcch_t pdcch;
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srslte_pdsch_t pdsch;
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srslte_pmch_t pmch;
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srslte_phich_t phich;
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srslte_refsignal_t csr_signal;
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srslte_refsignal_t mbsfnr_signal;
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cf_t pss_signal[SRSLTE_PSS_LEN];
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float sss_signal0[SRSLTE_SSS_LEN];
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float sss_signal5[SRSLTE_SSS_LEN];
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} srslte_enb_dl_t;
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typedef struct {
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uint8_t ack;
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uint32_t n_prb_lowest;
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uint32_t n_dmrs;
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} srslte_enb_dl_phich_t;
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/* This function shall be called just after the initial synchronization */
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SRSLTE_API int srslte_enb_dl_init(srslte_enb_dl_t* q, cf_t* out_buffer[SRSLTE_MAX_PORTS], uint32_t max_prb);
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SRSLTE_API void srslte_enb_dl_free(srslte_enb_dl_t* q);
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SRSLTE_API int srslte_enb_dl_set_cell(srslte_enb_dl_t* q, srslte_cell_t cell);
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SRSLTE_API int srslte_enb_dl_add_rnti(srslte_enb_dl_t* q, uint16_t rnti);
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SRSLTE_API void srslte_enb_dl_rem_rnti(srslte_enb_dl_t* q, uint16_t rnti);
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SRSLTE_API void srslte_enb_dl_put_base(srslte_enb_dl_t* q, srslte_dl_sf_cfg_t* dl_sf);
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SRSLTE_API void srslte_enb_dl_put_phich(srslte_enb_dl_t* q, srslte_phich_grant_t* grant, bool ack);
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SRSLTE_API int srslte_enb_dl_put_pdcch_dl(srslte_enb_dl_t* q, srslte_dci_cfg_t* dci_cfg, srslte_dci_dl_t* dci_dl);
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SRSLTE_API int srslte_enb_dl_put_pdcch_ul(srslte_enb_dl_t* q, srslte_dci_cfg_t* dci_cfg, srslte_dci_ul_t* dci_ul);
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SRSLTE_API int
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srslte_enb_dl_put_pdsch(srslte_enb_dl_t* q, srslte_pdsch_cfg_t* pdsch, uint8_t* data[SRSLTE_MAX_CODEWORDS]);
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SRSLTE_API int srslte_enb_dl_put_pmch(srslte_enb_dl_t* q, srslte_pmch_cfg_t* pmch_cfg, uint8_t* data);
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SRSLTE_API void srslte_enb_dl_gen_signal(srslte_enb_dl_t* q);
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SRSLTE_API bool srslte_enb_dl_gen_cqi_periodic(const srslte_cell_t* cell,
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const srslte_dl_cfg_t* dl_cfg,
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uint32_t tti,
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uint32_t last_ri,
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srslte_cqi_cfg_t* cqi_cfg);
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SRSLTE_API bool srslte_enb_dl_gen_cqi_aperiodic(const srslte_cell_t* cell,
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const srslte_dl_cfg_t* dl_cfg,
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uint32_t ri,
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srslte_cqi_cfg_t* cqi_cfg);
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SRSLTE_API void srslte_enb_dl_save_signal(srslte_enb_dl_t* q);
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/**
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* Generates the uplink control information configuration from the cell, subframe and HARQ ACK information. Note that
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* it expects the UCI configuration shall have been configured already with scheduling request and channel quality
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* information prior to this call.
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*
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* @param cell points to the physical layer cell parameters
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* @param sf points to the subframe configuration
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* @param ack_info is the HARQ-ACK information
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* @param uci_cfg the UCI configuration destination
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*/
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SRSLTE_API void srslte_enb_dl_gen_ack(const srslte_cell_t* cell,
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const srslte_dl_sf_cfg_t* sf,
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const srslte_pdsch_ack_t* ack_info,
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srslte_uci_cfg_t* uci_cfg);
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/**
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* gets the HARQ-ACK values from the received Uplink Control Information configuration, the cell, and HARQ ACK
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* info itself. Note that it expects that the HARQ-ACK info has been set prior the UCI Data decoding.
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*
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* @param cell points to the physical layer cell parameters
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* @param uci_value points to the received UCI values
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* @param ack_info is the HARQ-ACK information
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*/
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SRSLTE_API void
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srslte_enb_dl_get_ack(const srslte_cell_t* cell, const srslte_uci_value_t* uci_value, srslte_pdsch_ack_t* pdsch_ack);
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#endif // SRSLTE_ENB_DL_H
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