mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
183 lines
7.4 KiB
C
183 lines
7.4 KiB
C
/**
|
|
*
|
|
* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2021 Software Radio Systems Limited
|
|
*
|
|
* By using this file, you agree to the terms and conditions set
|
|
* forth in the LICENSE file which can be found at the top level of
|
|
* the distribution.
|
|
*
|
|
*/
|
|
|
|
#ifndef SRSRAN_UE_DL_NBIOT_H
|
|
#define SRSRAN_UE_DL_NBIOT_H
|
|
|
|
#include <stdbool.h>
|
|
|
|
#include "srsran/phy/ch_estimation/chest_dl_nbiot.h"
|
|
#include "srsran/phy/common/phy_common.h"
|
|
#include "srsran/phy/dft/ofdm.h"
|
|
|
|
#include "srsran/phy/phch/dci_nbiot.h"
|
|
#include "srsran/phy/phch/npdcch.h"
|
|
#include "srsran/phy/phch/npdsch.h"
|
|
#include "srsran/phy/phch/npdsch_cfg.h"
|
|
#include "srsran/phy/phch/ra_nbiot.h"
|
|
|
|
#include "srsran/phy/sync/cfo.h"
|
|
|
|
#include "srsran/phy/utils/debug.h"
|
|
#include "srsran/phy/utils/vector.h"
|
|
|
|
#include "srsran/config.h"
|
|
|
|
#define SRSRAN_NBIOT_EXPECT_MORE_SF -3 // returned when expecting more subframes for successful decoding
|
|
#define SRSRAN_NBIOT_UE_DL_FOUND_DCI -4 // returned when DCI for given RNTI was found
|
|
#define SRSRAN_NBIOT_UE_DL_SKIP_SF -5
|
|
|
|
/*
|
|
* @brief Narrowband UE downlink object.
|
|
*
|
|
* This module is a frontend to all the downlink data and control
|
|
* channel processing modules.
|
|
*/
|
|
typedef struct SRSRAN_API {
|
|
srsran_npdcch_t npdcch;
|
|
srsran_npdsch_t npdsch;
|
|
srsran_ofdm_t fft;
|
|
srsran_chest_dl_nbiot_t chest;
|
|
|
|
srsran_cfo_t sfo_correct;
|
|
|
|
srsran_softbuffer_rx_t softbuffer;
|
|
srsran_nbiot_cell_t cell;
|
|
srsran_mib_nb_t mib;
|
|
bool mib_set;
|
|
|
|
int nof_re; // Number of RE per subframe
|
|
cf_t* sf_symbols; // this buffer holds the symbols of the current subframe
|
|
cf_t* sf_buffer; // this buffer holds multiple subframes
|
|
cf_t* ce[SRSRAN_MAX_PORTS];
|
|
cf_t* ce_buffer[SRSRAN_MAX_PORTS];
|
|
float* llr; // Buffer to hold soft-bits for later combining repetitions
|
|
|
|
uint32_t pkt_errors;
|
|
uint32_t pkts_total;
|
|
uint32_t pkts_ok;
|
|
uint32_t nof_detected;
|
|
uint32_t bits_total;
|
|
|
|
// DL configuration for "normal" transmissions
|
|
bool has_dl_grant;
|
|
srsran_npdsch_cfg_t npdsch_cfg;
|
|
|
|
// DL configuration for SIB1 transmissions
|
|
uint32_t sib1_sfn[4 * SIB1_NB_MAX_REP]; // there are 4 SIB1 TTIs in each hyper frame
|
|
srsran_nbiot_si_params_t si_params[SRSRAN_NBIOT_SI_TYPE_NITEMS];
|
|
bool si_tti[10240]; // We trade memory consumption for speed
|
|
|
|
uint16_t current_rnti;
|
|
uint32_t last_n_cce;
|
|
srsran_dci_location_t last_location;
|
|
|
|
float sample_offset;
|
|
} srsran_nbiot_ue_dl_t;
|
|
|
|
// This function shall be called just after the initial synchronization
|
|
SRSRAN_API int srsran_nbiot_ue_dl_init(srsran_nbiot_ue_dl_t* q,
|
|
cf_t* in_buffer[SRSRAN_MAX_PORTS],
|
|
uint32_t max_prb,
|
|
uint32_t nof_rx_antennas);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_free(srsran_nbiot_ue_dl_t* q);
|
|
|
|
SRSRAN_API int srsran_nbiot_ue_dl_set_cell(srsran_nbiot_ue_dl_t* q, srsran_nbiot_cell_t cell);
|
|
|
|
SRSRAN_API int srsran_nbiot_ue_dl_decode_fft_estimate(srsran_nbiot_ue_dl_t* q, uint32_t sf_idx, bool is_dl_sf);
|
|
|
|
SRSRAN_API int srsran_nbiot_ue_dl_decode_estimate(srsran_nbiot_ue_dl_t* q, uint32_t sf_idx);
|
|
|
|
SRSRAN_API int
|
|
srsran_nbiot_ue_dl_cfg_grant(srsran_nbiot_ue_dl_t* q, srsran_ra_nbiot_dl_grant_t* grant, uint32_t sf_idx);
|
|
|
|
SRSRAN_API int
|
|
srsran_nbiot_ue_dl_find_dl_dci(srsran_nbiot_ue_dl_t* q, uint32_t sf_idx, uint16_t rnti, srsran_dci_msg_t* dci_msg);
|
|
|
|
int srsran_nbiot_ue_dl_find_dl_dci_type_siprarnti(srsran_nbiot_ue_dl_t* q, uint16_t rnti, srsran_dci_msg_t* dci_msg);
|
|
|
|
int srsran_nbiot_ue_dl_find_dl_dci_type_crnti(srsran_nbiot_ue_dl_t* q,
|
|
uint32_t sf_idx,
|
|
uint16_t rnti,
|
|
srsran_dci_msg_t* dci_msg);
|
|
|
|
SRSRAN_API int
|
|
srsran_nbiot_ue_dl_find_ul_dci(srsran_nbiot_ue_dl_t* q, uint32_t tti, uint32_t rnti, srsran_dci_msg_t* dci_msg);
|
|
|
|
SRSRAN_API uint32_t srsran_nbiot_ue_dl_get_ncce(srsran_nbiot_ue_dl_t* q);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_set_sample_offset(srsran_nbiot_ue_dl_t* q, float sample_offset);
|
|
|
|
SRSRAN_API int
|
|
srsran_nbiot_ue_dl_decode(srsran_nbiot_ue_dl_t* q, cf_t* input, uint8_t* data, uint32_t sfn, uint32_t sf_idx);
|
|
|
|
SRSRAN_API int srsran_nbiot_ue_dl_decode_npdcch(srsran_nbiot_ue_dl_t* q,
|
|
cf_t* input,
|
|
uint32_t sfn,
|
|
uint32_t sf_idx,
|
|
uint16_t rnti,
|
|
srsran_dci_msg_t* dci_msg);
|
|
|
|
SRSRAN_API int srsran_nbiot_ue_dl_decode_npdsch(srsran_nbiot_ue_dl_t* q,
|
|
cf_t* input,
|
|
uint8_t* data,
|
|
uint32_t sfn,
|
|
uint32_t sf_idx,
|
|
uint16_t rnti);
|
|
|
|
int srsran_nbiot_ue_dl_decode_npdsch_bcch(srsran_nbiot_ue_dl_t* q, uint8_t* data, uint32_t tti);
|
|
|
|
int srsran_nbiot_ue_dl_decode_npdsch_no_bcch(srsran_nbiot_ue_dl_t* q, uint8_t* data, uint32_t tti, uint16_t rnti);
|
|
|
|
void srsran_nbiot_ue_dl_tb_decoded(srsran_nbiot_ue_dl_t* q, uint8_t* data);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_reset(srsran_nbiot_ue_dl_t* q);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_set_rnti(srsran_nbiot_ue_dl_t* q, uint16_t rnti);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_set_mib(srsran_nbiot_ue_dl_t* q, srsran_mib_nb_t mib);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_decode_sib1(srsran_nbiot_ue_dl_t* q, uint32_t current_sfn);
|
|
|
|
SRSRAN_API void
|
|
srsran_nbiot_ue_dl_get_sib1_grant(srsran_nbiot_ue_dl_t* q, uint32_t sfn, srsran_ra_nbiot_dl_grant_t* grant);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_decode_sib(srsran_nbiot_ue_dl_t* q,
|
|
uint32_t hfn,
|
|
uint32_t sfn,
|
|
srsran_nbiot_si_type_t type,
|
|
srsran_nbiot_si_params_t params);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_get_next_si_sfn(uint32_t current_hfn,
|
|
uint32_t current_sfn,
|
|
srsran_nbiot_si_params_t params,
|
|
uint32_t* si_hfn,
|
|
uint32_t* si_sfn);
|
|
|
|
SRSRAN_API void
|
|
srsran_nbiot_ue_dl_set_si_params(srsran_nbiot_ue_dl_t* q, srsran_nbiot_si_type_t type, srsran_nbiot_si_params_t params);
|
|
|
|
SRSRAN_API bool srsran_nbiot_ue_dl_is_sib1_sf(srsran_nbiot_ue_dl_t* q, uint32_t sfn, uint32_t sf_idx);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_set_grant(srsran_nbiot_ue_dl_t* q, srsran_ra_nbiot_dl_grant_t* grant);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_flush_grant(srsran_nbiot_ue_dl_t* q);
|
|
|
|
SRSRAN_API bool srsran_nbiot_ue_dl_has_grant(srsran_nbiot_ue_dl_t* q);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_check_grant(srsran_nbiot_ue_dl_t* q, srsran_ra_nbiot_dl_grant_t* grant);
|
|
|
|
SRSRAN_API void srsran_nbiot_ue_dl_save_signal(srsran_nbiot_ue_dl_t* q, cf_t* input, uint32_t tti, uint32_t sf_idx);
|
|
|
|
#endif // SRSRAN_UE_DL_NBIOT_H
|