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288 lines
13 KiB
C
288 lines
13 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSLTE_PUCCH_NR_H
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#define SRSLTE_PUCCH_NR_H
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common_nr.h"
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#include "srslte/phy/common/zc_sequence.h"
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#include "srslte/phy/modem/modem_table.h"
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#include <srslte/srslte.h>
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#include <stdbool.h>
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#include <stdint.h>
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/**
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* @brief Maximum number of symbols (without DMRS) that NR-PUCCH format 1 can transmit
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*/
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#define SRSLTE_PUCCH_NR_FORMAT1_N_MAX 7
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/**
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* @brief Maximum number of bit that NR-PUCCH format 1 can carry
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*/
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#define SRSLTE_PUCCH_NR_FORMAT1_MAX_NOF_BITS 2
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typedef enum SRSLTE_API {
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SRSLTE_PUCCH_NR_FORMAT_0 = 0,
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SRSLTE_PUCCH_NR_FORMAT_1,
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SRSLTE_PUCCH_NR_FORMAT_2,
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SRSLTE_PUCCH_NR_FORMAT_3,
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SRSLTE_PUCCH_NR_FORMAT_4,
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SRSLTE_PUCCH_NR_FORMAT_ERROR,
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} srslte_pucch_nr_format_t;
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typedef enum SRSLTE_API {
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SRSLTE_PUCCH_NR_GROUP_HOPPING_NEITHER = 0,
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SRSLTE_PUCCH_NR_GROUP_HOPPING_ENABLE,
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SRSLTE_PUCCH_NR_GROUP_HOPPING_DISABLE
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} srslte_pucch_nr_group_hopping_t;
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/**
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* @brief PUCCH Common configuration
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* @remark Defined in TS 38.331 PUCCH-ConfigCommon
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*/
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typedef struct SRSLTE_API {
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uint32_t resource_common; ///< Configures a set of cell-specific PUCCH resources/parameters
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srslte_pucch_nr_group_hopping_t group_hopping; ///< Configuration of group and sequence hopping
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uint32_t hopping_id; ///< Cell-specific scrambling ID for group hopping and sequence hopping if enabled
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bool hopping_id_present;
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float p0_nominal; ///< Power control parameter P0 for PUCCH transmissions. Value in dBm. (-202..24)
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} srslte_pucch_nr_common_cfg_t;
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/**
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* @brief Generic PUCCH Resource configuration
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* @remark Defined in TS 38.331 PUCCH-Config
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*/
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typedef struct SRSLTE_API {
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//
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uint32_t starting_prb;
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bool intra_slot_frequency_hopping;
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uint32_t second_hop_prb;
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// Common PUCCH-Resource parameters among all formats
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srslte_pucch_nr_format_t format; ///< PUCCH format this configuration belongs
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uint32_t nof_symbols; ///< Number of symbols
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uint32_t start_symbol_idx; ///< Starting symbol index
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double max_code_rate; ///< Maximum code rate (0.08, 0.15, 0.25, 0.35, 0.45, 0.60, 0.80)
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bool enable_pi_bpsk; ///< Enables PI-BPSK
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// Specific PUCCH-Resource
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uint32_t initial_cyclic_shift; ///< Used by formats 0, 1
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uint32_t time_domain_occ; ///< Used by format 1
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uint32_t nof_prb; ///< Used by formats 2, 3
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uint32_t occ_lenth; ///< Spreading factor, used by format 4
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uint32_t occ_index; ///< Used by format 4
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} srslte_pucch_nr_resource_t;
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typedef struct SRSLTE_API {
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float rsrp;
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float rsrp_dBfs;
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float epre;
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float epre_dBfs;
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float norm_corr;
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} srslte_pucch_nr_measure_t;
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/**
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* @brief PUCCH Resource configuration for Format 0
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* @remark Defined in TS 38.331 PUCCH-Config
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*/
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typedef struct SRSLTE_API {
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uint32_t starting_prb;
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uint32_t initial_cyclic_shift; ///< initialCyclicShift (0..11)
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uint32_t start_symbol_idx; ///< startingSymbolIndex (0..13)
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uint32_t nof_symbols; ///< nrofSymbols (1..2)
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} srslte_pucch_nr_resource_format0_t;
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/**
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* @brief PUCCH Resource configuration for Format 1
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* @remark Defined in TS 38.331 PUCCH-Config
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*/
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typedef struct SRSLTE_API {
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uint32_t starting_prb;
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uint32_t initial_cyclic_shift; ///< initialCyclicShift (0..11)
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uint32_t start_symbol_idx; ///< startingSymbolIndex (0..10)
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uint32_t nof_symbols; ///< nrofSymbols (4..14)
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uint32_t time_domain_occ; ///< TimeDomainOCC(0..6)
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bool intra_slot_hopping;
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} srslte_pucch_nr_resource_format1_t;
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/**
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* @brief NR-PUCCH encoder/decoder object
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*/
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typedef struct SRSLTE_API {
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srslte_zc_sequence_lut_t r_uv_1prb;
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cf_t format1_w_i_m[SRSLTE_PUCCH_NR_FORMAT1_N_MAX][SRSLTE_PUCCH_NR_FORMAT1_N_MAX][SRSLTE_PUCCH_NR_FORMAT1_N_MAX];
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srslte_modem_table_t bpsk;
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srslte_modem_table_t qpsk;
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} srslte_pucch_nr_t;
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/**
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* @brief Initialises an NR-PUCCH encoder/decoder object
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* @param q Object
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* @return SRSLTE_SUCCESS if successful, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_init(srslte_pucch_nr_t* q);
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/**
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* @brief Deallocates an NR-PUCCH encoder/decoder object
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* @param q Object
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*/
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SRSLTE_API void srslte_pucch_nr_free(srslte_pucch_nr_t* q);
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/**
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* @brief Computes the NR-PUCCH group sequence
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* @remark Implemented according to TS 38.211 clause 6.3.2.2.1 Group and sequence hopping
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* @param[in] carrier Serving cell and UL BWP configuration
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* @param[in] cfg PUCCH common configuration
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* @param[out] u_ Group sequence (u)
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* @param[out] v_ Base sequence (v)
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* @return SRSLTE_SUCCESS if provide arguments are right, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_group_sequence(const srslte_carrier_nr_t* carrier,
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const srslte_pucch_nr_common_cfg_t* cfg,
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uint32_t* u_,
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uint32_t* v_);
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/**
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* @brief Computes the NR alpha index (1-NRE)
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* @param[in] carrier Serving cell and UL BWP configuration
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* @param[in] cfg PUCCH common configuration
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* @param[in] slot slot configuration
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* @param[in] l OFDM Symbol, relative to the NR-PUCCH transmission start
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* @param[in] l_prime Initial OFDM symbol, relative to the transmission slot start
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* @param[in] m0 Initial cyclic shift
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* @param[in] m_cs Set to zero expect for format 0
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* @param[out] alpha_idx Computed alpha index
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* @return SRSLTE_SUCCESS if provide arguments are right, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_alpha_idx(const srslte_carrier_nr_t* carrier,
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const srslte_pucch_nr_common_cfg_t* cfg,
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const srslte_dl_slot_cfg_t* slot,
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uint32_t l,
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uint32_t l_prime,
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uint32_t m0,
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uint32_t m_cs,
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uint32_t* alpha_idx);
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/**
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* @brief Validates a PUCCH format 1 resource configuration provided by upper layers
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* @param resource Resource configuration to validate
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* @return SRSLTE_SUCCESS if valid, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_format0_resource_valid(const srslte_pucch_nr_resource_format0_t* resource);
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/**
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* @brief Encode and writes NR-PUCCH format 0 in the resource grid
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* @remark Described in TS 38.211 clause 6.3.2.3 PUCCH format 0
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* @param[in] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Carrier configuration
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* @param[in] cfg PUCCH common configuration
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* @param[in] slot slot configuration
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* @param[in] resource PUCCH format 0 resource
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* @param[in] m_cs Cyclic shift according to TS 38.213 clause 5
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* @param[out] slot_symbols Resource grid of the given slot
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* @return SRSLTE_SUCCESS if successful, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_format0_encode(const srslte_pucch_nr_t* q,
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const srslte_carrier_nr_t* carrier,
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const srslte_pucch_nr_common_cfg_t* cfg,
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const srslte_dl_slot_cfg_t* slot,
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srslte_pucch_nr_resource_format0_t* resource,
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uint32_t m_cs,
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cf_t* slot_symbols);
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/**
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* @brief Measures PUCCH format 0 in the resource grid
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* @param[in] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Carrier configuration
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* @param[in] cfg PUCCH common configuration
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* @param[in] slot slot configuration
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* @param[in] resource PUCCH format 0 resource
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* @param[in] m_cs Cyclic shift according to TS 38.213 clause 5
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* @param[in] slot_symbols Resource grid of the given slot
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* @param[out] measure Measurement structure
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* @return SRSLTE_SUCCESS if successful, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_format0_measure(const srslte_pucch_nr_t* q,
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const srslte_carrier_nr_t* carrier,
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const srslte_pucch_nr_common_cfg_t* cfg,
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const srslte_dl_slot_cfg_t* slot,
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srslte_pucch_nr_resource_format0_t* resource,
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uint32_t m_cs,
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const cf_t* slot_symbols,
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srslte_pucch_nr_measure_t* measure);
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/**
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* @brief Validates a PUCCH format 1 resource configuration provided by upper layers
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* @param resource Resource configuration to validate
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* @return SRSLTE_SUCCESS if valid, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_format1_resource_valid(const srslte_pucch_nr_resource_format1_t* resource);
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/**
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* @brief Get NR-PUCCH orthogonal sequence w
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* @remark Defined by TS 38.211 Table 6.3.2.4.1-2: Orthogonal sequences ... for PUCCH format 1
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* @param[in] q NR-PUCCH encoder/decoder object
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* @param[in] n_pucch Number of PUCCH symbols
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* @param[in] i sequence index
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* @param m OFDM symbol index
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* @return Orthogonal sequence complex number if valid, NAN otherwise
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*/
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SRSLTE_API cf_t srslte_pucch_nr_format1_w(const srslte_pucch_nr_t* q, uint32_t n_pucch, uint32_t i, uint32_t m);
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/**
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* @brief Encodes and puts NR-PUCCH format 1 in the resource grid
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* @remark Described in TS 38.211 clause 6.3.2.4 PUCCH format 1
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* @param[in] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Carrier configuration
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* @param[in] cfg PUCCH common configuration
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* @param[in] slot slot configuration
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* @param[in] resource PUCCH format 1 resource
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* @param[in] b Bits to encode in the message
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* @param[in] nof_bits Number of bits to encode in the message
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* @param[out] slot_symbols Resource grid of the given slot
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* @return SRSLTE_SUCCESS if successful, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_format1_encode(const srslte_pucch_nr_t* q,
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const srslte_carrier_nr_t* carrier,
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const srslte_pucch_nr_common_cfg_t* cfg,
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const srslte_dl_slot_cfg_t* slot,
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const srslte_pucch_nr_resource_format1_t* resource,
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uint8_t* b,
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uint32_t nof_bits,
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cf_t* slot_symbols);
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/**
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* @brief Decodes NR-PUCCH format 1
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* @param[in] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Carrier configuration
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* @param[in] cfg PUCCH common configuration
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* @param[in] slot slot configuration
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* @param[in] resource PUCCH format 1 resource
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* @param[in] chest_res Channel estimator result
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* @param[in] slot_symbols Resource grid of the given slot
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* @param[out] b Bits to decode
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* @param[in] nof_bits Number of bits to decode in the message
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* @return SRSLTE_SUCCESS if successful, SRSLTE_ERROR code otherwise
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*/
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SRSLTE_API int srslte_pucch_nr_format1_decode(srslte_pucch_nr_t* q,
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const srslte_carrier_nr_t* carrier,
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const srslte_pucch_nr_common_cfg_t* cfg,
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const srslte_dl_slot_cfg_t* slot,
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const srslte_pucch_nr_resource_format1_t* resource,
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srslte_chest_ul_res_t* chest_res,
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cf_t* slot_symbols,
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uint8_t b[SRSLTE_PUCCH_NR_FORMAT1_MAX_NOF_BITS],
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uint32_t nof_bits);
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#endif // SRSLTE_PUCCH_NR_H
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