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.
97 lines
3.2 KiB
C
97 lines
3.2 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.
|
|
*
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* File: ue_cell_search.h
|
|
*
|
|
* Description: Wrapper for the ue_sync object.
|
|
*
|
|
* This object is a wrapper to the ue_sync object. It receives
|
|
* several synchronized frames and obtains the most common cell_id
|
|
* and cp length.
|
|
*
|
|
* The I/O stream device sampling frequency must be set to 1.92 MHz
|
|
* (SRSRAN_CS_SAMP_FREQ constant) before calling to
|
|
* srsran_ue_cellsearch_scan() functions.
|
|
*
|
|
* Reference:
|
|
*****************************************************************************/
|
|
|
|
#ifndef SRSRAN_UE_CELL_SEARCH_H
|
|
#define SRSRAN_UE_CELL_SEARCH_H
|
|
|
|
#include <stdbool.h>
|
|
|
|
#include "srsran/config.h"
|
|
#include "srsran/phy/ch_estimation/chest_dl.h"
|
|
#include "srsran/phy/dft/ofdm.h"
|
|
#include "srsran/phy/phch/pbch.h"
|
|
#include "srsran/phy/sync/cfo.h"
|
|
#include "srsran/phy/ue/ue_mib.h"
|
|
#include "srsran/phy/ue/ue_sync.h"
|
|
|
|
#define SRSRAN_CS_NOF_PRB 6
|
|
#define SRSRAN_CS_SAMP_FREQ 1920000.0
|
|
|
|
typedef struct SRSRAN_API {
|
|
uint32_t cell_id;
|
|
srsran_cp_t cp;
|
|
srsran_frame_type_t frame_type;
|
|
float peak;
|
|
float mode;
|
|
float psr;
|
|
float cfo;
|
|
} srsran_ue_cellsearch_result_t;
|
|
|
|
typedef struct SRSRAN_API {
|
|
srsran_ue_sync_t ue_sync;
|
|
|
|
cf_t* sf_buffer[SRSRAN_MAX_CHANNELS];
|
|
uint32_t nof_rx_antennas;
|
|
|
|
uint32_t max_frames;
|
|
uint32_t nof_valid_frames; // number of 5 ms frames to scan
|
|
|
|
uint32_t *mode_ntimes;
|
|
uint8_t* mode_counted;
|
|
|
|
srsran_ue_cellsearch_result_t* candidates;
|
|
} srsran_ue_cellsearch_t;
|
|
|
|
SRSRAN_API int srsran_ue_cellsearch_init(srsran_ue_cellsearch_t* q,
|
|
uint32_t max_frames_total,
|
|
int(recv_callback)(void*, void*, uint32_t, srsran_timestamp_t*),
|
|
void* stream_handler);
|
|
|
|
SRSRAN_API int
|
|
srsran_ue_cellsearch_init_multi(srsran_ue_cellsearch_t* q,
|
|
uint32_t max_frames_total,
|
|
int(recv_callback)(void*, cf_t* [SRSRAN_MAX_CHANNELS], uint32_t, srsran_timestamp_t*),
|
|
uint32_t nof_rx_antennas,
|
|
void* stream_handler);
|
|
|
|
SRSRAN_API void srsran_ue_cellsearch_free(srsran_ue_cellsearch_t* q);
|
|
|
|
SRSRAN_API int
|
|
srsran_ue_cellsearch_scan_N_id_2(srsran_ue_cellsearch_t* q, uint32_t N_id_2, srsran_ue_cellsearch_result_t* found_cell);
|
|
|
|
SRSRAN_API int srsran_ue_cellsearch_scan(srsran_ue_cellsearch_t* q,
|
|
srsran_ue_cellsearch_result_t found_cells[3],
|
|
uint32_t* max_N_id_2);
|
|
|
|
SRSRAN_API int srsran_ue_cellsearch_set_nof_valid_frames(srsran_ue_cellsearch_t* q, uint32_t nof_frames);
|
|
|
|
SRSRAN_API void srsran_set_detect_cp(srsran_ue_cellsearch_t* q, bool enable);
|
|
|
|
#endif // SRSRAN_UE_CELL_SEARCH_H
|
|
|