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259 lines
13 KiB
C
259 lines
13 KiB
C
/**
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* Copyright 2013-2021 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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#ifndef SRSLTE_PUCCH_NR_H
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#define SRSLTE_PUCCH_NR_H
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#include "srslte/phy/ch_estimation/chest_ul.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/phy/phch/uci_nr.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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typedef struct SRSLTE_API {
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srslte_uci_nr_args_t uci;
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uint32_t max_nof_prb;
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} srslte_pucch_nr_args_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 NR-PUCCH encoder/decoder object
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*/
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typedef struct SRSLTE_API {
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uint32_t max_prb;
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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_uci_nr_t uci;
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uint8_t* b;
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cf_t* d;
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cf_t* ce;
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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, const srslte_pucch_nr_args_t* args);
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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_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 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,out] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Serving cell and Uplink 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] 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_slot_cfg_t* slot,
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srslte_pucch_nr_resource_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,out] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Serving cell and Uplink 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] 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_slot_cfg_t* slot,
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srslte_pucch_nr_resource_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 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,out] 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,out] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Serving cell and Uplink 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] 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_slot_cfg_t* slot,
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const srslte_pucch_nr_resource_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,out] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Serving cell and Uplink 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] resource PUCCH format 2-4 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_slot_cfg_t* slot,
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const srslte_pucch_nr_resource_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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/**
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* @brief Encoder NR-PUCCH formats 2, 3 and 4. The NR-PUCCH format is selected by resource->format.
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* @param[in,out] q NR-PUCCH encoder/decoder object
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* @param[in] carrier Serving cell and Uplink 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] resource PUCCH format 1 resource
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* @param[in] uci_cfg Uplink Control Information configuration
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* @param[in] uci_value Uplink Control Information data
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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_format_2_3_4_encode(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_slot_cfg_t* slot,
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const srslte_pucch_nr_resource_t* resource,
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const srslte_uci_cfg_nr_t* uci_cfg,
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const srslte_uci_value_nr_t* uci_value,
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cf_t* slot_symbols);
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/**
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* @brief Decode NR-PUCCH format 2, 3, and 4. The NR-PUCCH format is selected by resource->format.
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* @param q[in,out] q NR-PUCCH encoder/decoder
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* @param[in] carrier Serving cell and Uplink 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] resource PUCCH format 2-4 resource
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* @param[in] uci_cfg Uplink Control Information configuration
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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] uci_value Uplink Control Information data
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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_format_2_3_4_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_slot_cfg_t* slot,
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const srslte_pucch_nr_resource_t* resource,
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const srslte_uci_cfg_nr_t* uci_cfg,
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srslte_chest_ul_res_t* chest_res,
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cf_t* slot_symbols,
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srslte_uci_value_nr_t* uci_value);
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SRSLTE_API uint32_t srslte_pucch_nr_tx_info(const srslte_pucch_nr_resource_t* resource,
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const srslte_uci_data_nr_t* uci_data,
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char* str,
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uint32_t str_len);
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#endif // SRSLTE_PUCCH_NR_H
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