srsRAN_4G/lib/include/srsran/phy/common/phy_common.h

/**
 *
 * \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:         phy_common.h
 *
 *  Description:  Common parameters and lookup functions for PHY
 *
 *  Reference:    3GPP TS 36.211 version 10.0.0 Release 10
 *********************************************************************************************/

#ifndef SRSRAN_PHY_COMMON_H
#define SRSRAN_PHY_COMMON_H

#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>

#ifdef __cplusplus
extern "C" {
#endif

#include "srsran/config.h"

#define SRSRAN_NOF_SF_X_FRAME 10
#define SRSRAN_NOF_SLOTS_PER_SF 2
#define SRSRAN_NSLOTS_X_FRAME (SRSRAN_NOF_SLOTS_PER_SF * SRSRAN_NOF_SF_X_FRAME)

#define SRSRAN_NSOFT_BITS 250368 // Soft buffer size for Category 1 UE

#define SRSRAN_PC_MAX 23 // Maximum TX power for Category 1 UE (in dBm)

#define SRSRAN_NOF_NID_1 (168)
#define SRSRAN_NOF_NID_2 (3)
#define SRSRAN_NUM_PCI (SRSRAN_NOF_NID_1 * SRSRAN_NOF_NID_2)

#define SRSRAN_MAX_CARRIERS 5 // Maximum number of supported simultaneous carriers
#define SRSRAN_MAX_PORTS 4
#define SRSRAN_MAX_CHANNELS (SRSRAN_MAX_CARRIERS * SRSRAN_MAX_PORTS)
#define SRSRAN_MAX_LAYERS 4
#define SRSRAN_MAX_CODEWORDS 2
#define SRSRAN_MAX_TB SRSRAN_MAX_CODEWORDS
#define SRSRAN_MAX_QM 8

#define SRSRAN_MAX_CODEBLOCKS 32

#define SRSRAN_MAX_CODEBOOKS 4

#define SRSRAN_NOF_CFI 3
#define SRSRAN_CFI_ISVALID(x) ((x >= 1 && x <= 3))
#define SRSRAN_CFI_IDX(x) ((x - 1) % SRSRAN_NOF_CFI)

#define SRSRAN_LTE_CRC24A 0x1864CFB
#define SRSRAN_LTE_CRC24B 0X1800063
#define SRSRAN_LTE_CRC24C 0X1B2B117
#define SRSRAN_LTE_CRC16 0x11021
#define SRSRAN_LTE_CRC11 0xE21
#define SRSRAN_LTE_CRC8 0x19B
#define SRSRAN_LTE_CRC6 0x61

#define SRSRAN_MAX_MBSFN_AREA_IDS 256
#define SRSRAN_PMCH_RV 0

typedef enum { SRSRAN_CP_NORM = 0, SRSRAN_CP_EXT } srsran_cp_t;
typedef enum { SRSRAN_SF_NORM = 0, SRSRAN_SF_MBSFN } srsran_sf_t;

#define SRSRAN_INVALID_RNTI 0x0 // TS 36.321 - Table 7.1-1 RNTI 0x0 isn't a valid DL RNTI
#define SRSRAN_CRNTI_START 0x000B
#define SRSRAN_CRNTI_END 0xFFF3
#define SRSRAN_RARNTI_START 0x0001
#define SRSRAN_RARNTI_END 0x000A
#define SRSRAN_SIRNTI 0xFFFF
#define SRSRAN_PRNTI 0xFFFE
#define SRSRAN_MRNTI 0xFFFD

#define SRSRAN_RNTI_ISRAR(rnti) (rnti >= SRSRAN_RARNTI_START && rnti <= SRSRAN_RARNTI_END)
#define SRSRAN_RNTI_ISUSER(rnti) (rnti >= SRSRAN_CRNTI_START && rnti <= SRSRAN_CRNTI_END)
#define SRSRAN_RNTI_ISSI(rnti) (rnti == SRSRAN_SIRNTI)
#define SRSRAN_RNTI_ISPA(rnti) (rnti == SRSRAN_PRNTI)
#define SRSRAN_RNTI_ISMBSFN(rnti) (rnti == SRSRAN_MRNTI)
#define SRSRAN_RNTI_ISSIRAPA(rnti) (SRSRAN_RNTI_ISSI(rnti) || SRSRAN_RNTI_ISRAR(rnti) || SRSRAN_RNTI_ISPA(rnti))

#define SRSRAN_CELL_ID_UNKNOWN 1000

#define SRSRAN_MAX_NSYMB 7

#define SRSRAN_MAX_PRB 110
#define SRSRAN_NRE 12

#define SRSRAN_SYMBOL_SZ_MAX 2048

#define SRSRAN_CP_NORM_NSYMB 7
#define SRSRAN_CP_NORM_SF_NSYMB (2 * SRSRAN_CP_NORM_NSYMB)
#define SRSRAN_CP_NORM_0_LEN 160
#define SRSRAN_CP_NORM_LEN 144

#define SRSRAN_CP_EXT_NSYMB 6
#define SRSRAN_CP_EXT_SF_NSYMB (2 * SRSRAN_CP_EXT_NSYMB)
#define SRSRAN_CP_EXT_LEN 512
#define SRSRAN_CP_EXT_7_5_LEN 1024

#define SRSRAN_CP_ISNORM(cp) (cp == SRSRAN_CP_NORM)
#define SRSRAN_CP_ISEXT(cp) (cp == SRSRAN_CP_EXT)
#define SRSRAN_CP_NSYMB(cp) (SRSRAN_CP_ISNORM(cp) ? SRSRAN_CP_NORM_NSYMB : SRSRAN_CP_EXT_NSYMB)

#define SRSRAN_CP_LEN(symbol_sz, c) ((int)ceilf((((float)(c) * (symbol_sz)) / 2048.0f)))
#define SRSRAN_CP_LEN_NORM(symbol, symbol_sz)                                                                          \
  (((symbol) == 0) ? SRSRAN_CP_LEN((symbol_sz), SRSRAN_CP_NORM_0_LEN) : SRSRAN_CP_LEN((symbol_sz), SRSRAN_CP_NORM_LEN))
#define SRSRAN_CP_LEN_EXT(symbol_sz) (SRSRAN_CP_LEN((symbol_sz), SRSRAN_CP_EXT_LEN))

#define SRSRAN_CP_SZ(symbol_sz, cp)                                                                                    \
  (SRSRAN_CP_LEN(symbol_sz, (SRSRAN_CP_ISNORM(cp) ? SRSRAN_CP_NORM_LEN : SRSRAN_CP_EXT_LEN)))
#define SRSRAN_SYMBOL_SZ(symbol_sz, cp) (symbol_sz + SRSRAN_CP_SZ(symbol_sz, cp))
#define SRSRAN_SLOT_LEN(symbol_sz) (symbol_sz * 15 / 2)
#define SRSRAN_SF_LEN(symbol_sz) (symbol_sz * 15)
#define SRSRAN_SF_LEN_MAX (SRSRAN_SF_LEN(SRSRAN_SYMBOL_SZ_MAX))

#define SRSRAN_SLOT_LEN_PRB(nof_prb) (SRSRAN_SLOT_LEN(srsran_symbol_sz(nof_prb)))
#define SRSRAN_SF_LEN_PRB(nof_prb) ((uint32_t)SRSRAN_SF_LEN(srsran_symbol_sz(nof_prb)))

#define SRSRAN_SLOT_LEN_RE(nof_prb, cp) (nof_prb * SRSRAN_NRE * SRSRAN_CP_NSYMB(cp))
#define SRSRAN_SF_LEN_RE(nof_prb, cp) (2 * SRSRAN_SLOT_LEN_RE(nof_prb, cp))
#define SRSRAN_NOF_RE(cell) (2 * SRSRAN_SLOT_LEN_RE(cell.nof_prb, cell.cp))

#define SRSRAN_TA_OFFSET (10e-6)

#define SRSRAN_LTE_TS (1.0f / (15000.0f * 2048.0f))

#define SRSRAN_SLOT_IDX_CPNORM(symbol_idx, symbol_sz)                                                                  \
  (symbol_idx == 0 ? 0                                                                                                 \
                   : (symbol_sz + SRSRAN_CP_LEN(symbol_sz, SRSRAN_CP_NORM_0_LEN) +                                     \
                      (symbol_idx - 1) * (symbol_sz + SRSRAN_CP_LEN(symbol_sz, SRSRAN_CP_NORM_LEN))))
#define SRSRAN_SLOT_IDX_CPEXT(idx, symbol_sz) (idx * (symbol_sz + SRSRAN_CP(symbol_sz, SRSRAN_CP_EXT_LEN)))

#define SRSRAN_RE_IDX(nof_prb, symbol_idx, sample_idx) ((symbol_idx) * (nof_prb) * (SRSRAN_NRE) + sample_idx)

#define SRSRAN_RS_VSHIFT(cell_id) (cell_id % 6)

#define SRSRAN_GUARD_RE(nof_prb) ((srsran_symbol_sz(nof_prb) - nof_prb * SRSRAN_NRE) / 2)

#define SRSRAN_SYMBOL_HAS_REF(l, cp, nof_ports) ((l == 1 && nof_ports == 4) || l == 0 || l == SRSRAN_CP_NSYMB(cp) - 3)

#define SRSRAN_NOF_CTRL_SYMBOLS(cell, cfi) (cfi + (cell.nof_prb < 10 ? 1 : 0))

#define SRSRAN_SYMBOL_HAS_REF_MBSFN(l, s) ((l == 2 && s == 0) || (l == 0 && s == 1) || (l == 4 && s == 1))

#define SRSRAN_NON_MBSFN_REGION_GUARD_LENGTH(non_mbsfn_region, symbol_sz)                                              \
  ((non_mbsfn_region == 1)                                                                                             \
       ? (SRSRAN_CP_LEN_EXT(symbol_sz) - SRSRAN_CP_LEN_NORM(0, symbol_sz))                                             \
       : (2 * SRSRAN_CP_LEN_EXT(symbol_sz) - SRSRAN_CP_LEN_NORM(0, symbol_sz) - SRSRAN_CP_LEN_NORM(1, symbol_sz)))

#define SRSRAN_FDD_NOF_HARQ (FDD_HARQ_DELAY_DL_MS + FDD_HARQ_DELAY_UL_MS)
#define SRSRAN_MAX_HARQ_PROC 15

#define SRSRAN_NOF_LTE_BANDS 58

#define SRSRAN_DEFAULT_MAX_FRAMES_PBCH 500
#define SRSRAN_DEFAULT_MAX_FRAMES_PSS 10
#define SRSRAN_DEFAULT_NOF_VALID_PSS_FRAMES 10

#define ZERO_OBJECT(x) memset(&(x), 0x0, sizeof((x)))

typedef enum SRSRAN_API { SRSRAN_PHICH_NORM = 0, SRSRAN_PHICH_EXT } srsran_phich_length_t;

typedef enum SRSRAN_API {
  SRSRAN_PHICH_R_1_6 = 0,
  SRSRAN_PHICH_R_1_2,
  SRSRAN_PHICH_R_1,
  SRSRAN_PHICH_R_2
} srsran_phich_r_t;

/// LTE duplex modes.
typedef enum SRSRAN_API {
  /// FDD uses frame structure type 1.
  SRSRAN_FDD = 0,
  /// TDD uses frame structure type 2.
  SRSRAN_TDD = 1
} srsran_frame_type_t;

/// Maximum number of TDD special subframe configurations.
#define SRSRAN_MAX_TDD_SS_CONFIGS (10u)

/// Maximum number of TDD uplink-downlink subframe configurations.
#define SRSRAN_MAX_TDD_SF_CONFIGS (7u)

/// Configuration fields for operating in TDD mode.
typedef struct SRSRAN_API {
  /// Uplink-downlink configuration, valid range is [0,SRSRAN_MAX_TDD_SF_CONFIGS[.
  /// TS 36.211 v8.9.0 Table 4.2-2.
  uint32_t sf_config;
  /// Special subframe symbol length configuration, valid range is [0,SRSRAN_MAX_TDD_SS_CONFIGS[.
  /// TS 36.211 v13.13.0 Table 4.2-1.
  uint32_t ss_config;
  /// Set to true when the fields have been configured, otherwise false.
  bool configured;
} srsran_tdd_config_t;

/// TDD uplink-downlink subframe types.
typedef enum SRSRAN_API {
  /// Subframe is reserved for downlink transmissions.
  SRSRAN_TDD_SF_D = 0,
  /// Subframe is reserved for uplink transmissions.
  SRSRAN_TDD_SF_U = 1,
  /// Special subframe.
  SRSRAN_TDD_SF_S = 2,
} srsran_tdd_sf_t;

typedef struct {
  uint8_t mbsfn_area_id;
  uint8_t non_mbsfn_region_length;
  uint8_t mbsfn_mcs;
  bool    enable;
  bool    is_mcch;
} srsran_mbsfn_cfg_t;

// Common cell constant properties that require object reconfiguration
typedef struct SRSRAN_API {
  uint32_t              nof_prb;
  uint32_t              nof_ports;
  uint32_t              id;
  srsran_cp_t           cp;
  srsran_phich_length_t phich_length;
  srsran_phich_r_t      phich_resources;
  srsran_frame_type_t   frame_type;
} srsran_cell_t;

// Common downlink properties that may change every subframe
typedef struct SRSRAN_API {
  srsran_tdd_config_t tdd_config;
  uint32_t            tti;
  uint32_t            cfi;
  srsran_sf_t         sf_type;
  uint32_t            non_mbsfn_region;
} srsran_dl_sf_cfg_t;

typedef struct SRSRAN_API {
  srsran_tdd_config_t tdd_config;
  uint32_t            tti;
  bool                shortened;
} srsran_ul_sf_cfg_t;

typedef enum SRSRAN_API {
  SRSRAN_TM1 = 0,
  SRSRAN_TM2,
  SRSRAN_TM3,
  SRSRAN_TM4,
  SRSRAN_TM5,
  SRSRAN_TM6,
  SRSRAN_TM7,
  SRSRAN_TM8,
  SRSRAN_TMINV // Invalid Transmission Mode
} srsran_tm_t;

typedef enum SRSRAN_API {
  SRSRAN_TXSCHEME_PORT0,
  SRSRAN_TXSCHEME_DIVERSITY,
  SRSRAN_TXSCHEME_SPATIALMUX,
  SRSRAN_TXSCHEME_CDD
} srsran_tx_scheme_t;

typedef enum SRSRAN_API { SRSRAN_MIMO_DECODER_ZF, SRSRAN_MIMO_DECODER_MMSE } srsran_mimo_decoder_t;

/*!
 * \brief Types of modulations and associated modulation order.
 */
typedef enum SRSRAN_API {
  SRSRAN_MOD_BPSK = 0, /*!< \brief BPSK. */
  SRSRAN_MOD_QPSK,     /*!< \brief QPSK. */
  SRSRAN_MOD_16QAM,    /*!< \brief QAM16. */
  SRSRAN_MOD_64QAM,    /*!< \brief QAM64. */
  SRSRAN_MOD_256QAM,   /*!< \brief QAM256. */
  SRSRAN_MOD_NITEMS
} srsran_mod_t;

typedef enum {
  SRSRAN_DCI_FORMAT0 = 0,
  SRSRAN_DCI_FORMAT1,
  SRSRAN_DCI_FORMAT1A,
  SRSRAN_DCI_FORMAT1B,
  SRSRAN_DCI_FORMAT1C,
  SRSRAN_DCI_FORMAT1D,
  SRSRAN_DCI_FORMAT2,
  SRSRAN_DCI_FORMAT2A,
  SRSRAN_DCI_FORMAT2B,
  // SRSRAN_DCI_FORMAT3,
  // SRSRAN_DCI_FORMAT3A,
  SRSRAN_DCI_FORMATN0,
  SRSRAN_DCI_FORMATN1,
  SRSRAN_DCI_FORMATN2,
  SRSRAN_DCI_FORMAT_RAR, // Not a real LTE format. Used internally to indicate RAR grant
  SRSRAN_DCI_NOF_FORMATS
} srsran_dci_format_t;

typedef enum {
  SRSRAN_PUCCH_ACK_NACK_FEEDBACK_MODE_NORMAL = 0, /* No cell selection no pucch3 */
  SRSRAN_PUCCH_ACK_NACK_FEEDBACK_MODE_CS,
  SRSRAN_PUCCH_ACK_NACK_FEEDBACK_MODE_PUCCH3,
  SRSRAN_PUCCH_ACK_NACK_FEEDBACK_MODE_ERROR,
} srsran_ack_nack_feedback_mode_t;

typedef struct SRSRAN_API {
  int   id;
  float fd;
} srsran_earfcn_t;

enum band_geographical_area {
  SRSRAN_BAND_GEO_AREA_ALL,
  SRSRAN_BAND_GEO_AREA_NAR,
  SRSRAN_BAND_GEO_AREA_APAC,
  SRSRAN_BAND_GEO_AREA_EMEA,
  SRSRAN_BAND_GEO_AREA_JAPAN,
  SRSRAN_BAND_GEO_AREA_CALA,
  SRSRAN_BAND_GEO_AREA_NA
};

///< NB-IoT specific structs
typedef enum {
  SRSRAN_NBIOT_MODE_INBAND_SAME_PCI = 0,
  SRSRAN_NBIOT_MODE_INBAND_DIFFERENT_PCI,
  SRSRAN_NBIOT_MODE_GUARDBAND,
  SRSRAN_NBIOT_MODE_STANDALONE,
  SRSRAN_NBIOT_MODE_N_ITEMS,
} srsran_nbiot_mode_t;

typedef struct SRSRAN_API {
  srsran_cell_t       base;      // the umbrella or super cell
  uint32_t            nbiot_prb; // the index of the NB-IoT PRB within the cell
  uint32_t            n_id_ncell;
  uint32_t            nof_ports; // The number of antenna ports for NB-IoT
  bool                is_r14;    // Whether the cell is a R14 cell
  srsran_nbiot_mode_t mode;
} srsran_nbiot_cell_t;

#define SRSRAN_NBIOT_MAX_PORTS 2
#define SRSRAN_NBIOT_MAX_CODEWORDS SRSRAN_MAX_CODEWORDS

#define SRSRAN_SF_LEN_PRB_NBIOT (SRSRAN_SF_LEN_PRB(1))

#define SRSRAN_SF_LEN_RE_NBIOT (SRSRAN_SF_LEN_RE(1, SRSRAN_CP_NORM))

#define SRSRAN_NBIOT_FFT_SIZE 128
#define SRSRAN_NBIOT_FREQ_SHIFT_FACTOR ((float)-0.5)
#define SRSRAN_NBIOT_NUM_RX_ANTENNAS 1
#define SRSRAN_NBIOT_MAX_PRB 1

#define SRSRAN_NBIOT_DEFAULT_NUM_PRB_BASECELL 1
#define SRSRAN_NBIOT_DEFAULT_PRB_OFFSET 0

#define SRSRAN_DEFAULT_MAX_FRAMES_NPBCH 500
#define SRSRAN_DEFAULT_MAX_FRAMES_NPSS 20
#define SRSRAN_DEFAULT_NOF_VALID_NPSS_FRAMES 20

#define SRSRAN_NBIOT_NPBCH_NOF_TOTAL_BITS (1600) ///< Number of bits for the entire NPBCH (See 36.211 Sec 10.2.4.1)
#define SRSRAN_NBIOT_NPBCH_NOF_BITS_SF                                                                                 \
  (SRSRAN_NBIOT_NPBCH_NOF_TOTAL_BITS / 8) ///< The NPBCH is transmitted in 8 blocks (See 36.211 Sec 10.2.4.4)

#define SRSRAN_MAX_DL_BITS_CAT_NB1 (680) ///< TS 36.306 v15.4.0 Table 4.1C-1

///< PHY common function declarations

SRSRAN_API bool srsran_cell_isvalid(srsran_cell_t* cell);

SRSRAN_API void srsran_cell_fprint(FILE* stream, srsran_cell_t* cell, uint32_t sfn);

SRSRAN_API bool srsran_cellid_isvalid(uint32_t cell_id);

SRSRAN_API bool srsran_nofprb_isvalid(uint32_t nof_prb);

/**
 * Returns the subframe type for a given subframe number and a TDD configuration.
 * Check TS 36.211 v8.9.0 Table 4.2-2.
 *
 * @param tdd_config TDD configuration.
 * @param sf_idx Subframe number, must be in range [0,SRSRAN_NOF_SF_X_FRAME[.
 * @return Returns the subframe type.
 */
SRSRAN_API srsran_tdd_sf_t srsran_sfidx_tdd_type(srsran_tdd_config_t tdd_config, uint32_t sf_idx);

/**
 * Returns the number of UpPTS symbols in a subframe.
 * Check TS 36.211 v13.13.0 Table 4.2-1.
 *
 * @param tdd_config TDD configuration.
 * @return Returns the number of UpPTS symbols.
 */
SRSRAN_API uint32_t srsran_sfidx_tdd_nof_up(srsran_tdd_config_t tdd_config);

/**
 * Returns the number of GP symbols in a subframe.
 * Check TS 36.211 v13.13.0 Table 4.2-1.
 *
 * @param tdd_config TDD configuration.
 * @return Returns the number of GP symbols.
 */
SRSRAN_API uint32_t srsran_sfidx_tdd_nof_gp(srsran_tdd_config_t tdd_config);

/**
 * Returns the number of DwPTS symbols in a subframe.
 * Check TS 36.211 v13.13.0 Table 4.2-1.
 *
 * @param tdd_config TDD configuration.
 * @return Returns the number of DwPTS symbols.
 */
SRSRAN_API uint32_t srsran_sfidx_tdd_nof_dw(srsran_tdd_config_t tdd_config);

SRSRAN_API uint32_t srsran_tdd_nof_harq(srsran_tdd_config_t tdd_config);

SRSRAN_API uint32_t srsran_sfidx_tdd_nof_dw_slot(srsran_tdd_config_t tdd_config, uint32_t slot, srsran_cp_t cp);

SRSRAN_API bool srsran_sfidx_isvalid(uint32_t sf_idx);

SRSRAN_API bool srsran_portid_isvalid(uint32_t port_id);

SRSRAN_API bool srsran_N_id_2_isvalid(uint32_t N_id_2);

SRSRAN_API bool srsran_N_id_1_isvalid(uint32_t N_id_1);

SRSRAN_API bool srsran_symbol_sz_isvalid(uint32_t symbol_sz);

SRSRAN_API int srsran_symbol_sz(uint32_t nof_prb);

SRSRAN_API int srsran_symbol_sz_power2(uint32_t nof_prb);

SRSRAN_API int srsran_nof_prb(uint32_t symbol_sz);

SRSRAN_API uint32_t srsran_max_cce(uint32_t nof_prb);

SRSRAN_API int srsran_sampling_freq_hz(uint32_t nof_prb);

SRSRAN_API void srsran_use_standard_symbol_size(bool enabled);

SRSRAN_API bool srsran_symbol_size_is_standard();

SRSRAN_API uint32_t srsran_re_x_prb(uint32_t ns, uint32_t symbol, uint32_t nof_ports, uint32_t nof_symbols);

SRSRAN_API uint32_t srsran_voffset(uint32_t symbol_id, uint32_t cell_id, uint32_t nof_ports);

SRSRAN_API int srsran_group_hopping_f_gh(uint32_t f_gh[SRSRAN_NSLOTS_X_FRAME], uint32_t cell_id);

SRSRAN_API uint32_t srsran_N_ta_new_rar(uint32_t ta);

SRSRAN_API uint32_t srsran_N_ta_new(uint32_t N_ta_old, uint32_t ta);

SRSRAN_API float srsran_coderate(uint32_t tbs, uint32_t nof_re);

SRSRAN_API char* srsran_cp_string(srsran_cp_t cp);

SRSRAN_API srsran_mod_t srsran_str2mod(const char* mod_str);

SRSRAN_API char* srsran_mod_string(srsran_mod_t mod);

SRSRAN_API uint32_t srsran_mod_bits_x_symbol(srsran_mod_t mod);

SRSRAN_API uint8_t srsran_band_get_band(uint32_t dl_earfcn);

SRSRAN_API bool srsran_band_is_tdd(uint32_t band);

SRSRAN_API double srsran_band_fd(uint32_t dl_earfcn);

SRSRAN_API double srsran_band_fu(uint32_t ul_earfcn);

SRSRAN_API uint32_t srsran_band_ul_earfcn(uint32_t dl_earfcn);

SRSRAN_API int
srsran_band_get_fd_band(uint32_t band, srsran_earfcn_t* earfcn, int earfcn_start, int earfcn_end, uint32_t max_elems);

SRSRAN_API int srsran_band_get_fd_band_all(uint32_t band, srsran_earfcn_t* earfcn, uint32_t max_nelems);

SRSRAN_API int
srsran_band_get_fd_region(enum band_geographical_area region, srsran_earfcn_t* earfcn, uint32_t max_elems);

SRSRAN_API int srsran_str2mimotype(char* mimo_type_str, srsran_tx_scheme_t* type);

SRSRAN_API char* srsran_mimotype2str(srsran_tx_scheme_t mimo_type);

/* Returns the interval tti1-tti2 mod 10240 */
SRSRAN_API uint32_t srsran_tti_interval(uint32_t tti1, uint32_t tti2);

SRSRAN_API uint32_t srsran_print_check(char* s, size_t max_len, uint32_t cur_len, const char* format, ...);

SRSRAN_API bool  srsran_nbiot_cell_isvalid(srsran_nbiot_cell_t* cell);
SRSRAN_API bool  srsran_nbiot_portid_isvalid(uint32_t port_id);
SRSRAN_API float srsran_band_fu_nbiot(uint32_t ul_earfcn, const float m_ul);

SRSRAN_API char* srsran_nbiot_mode_string(srsran_nbiot_mode_t mode);

/**
 * Returns a constant string pointer with the ACK/NACK feedback mode
 *
 * @param ack_nack_feedback_mode Mode
 * @return Returns constant pointer with the text of the mode if succesful, `error` otherwise
 */
SRSRAN_API const char* srsran_ack_nack_feedback_mode_string(srsran_ack_nack_feedback_mode_t ack_nack_feedback_mode);

/**
 * Returns a constant string pointer with the ACK/NACK feedback mode
 *
 * @param ack_nack_feedback_mode Mode
 * @return Returns constant pointer with the text of the mode if succesful, `error` otherwise
 */
SRSRAN_API srsran_ack_nack_feedback_mode_t srsran_string_ack_nack_feedback_mode(const char* str);

/**
 * Returns the number of bits for Rank Indicador reporting depending on the cell
 *
 * @param cell
 */
SRSRAN_API uint32_t srsran_ri_nof_bits(const srsran_cell_t* cell);

#ifdef __cplusplus
}
#endif

#endif // SRSRAN_PHY_COMMON_H