/** * Copyright 2013-2021 Software Radio Systems Limited * * This file is part of srsRAN. * * srsRAN is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * srsRAN is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * A copy of the GNU Affero General Public License can be found in * the LICENSE file in the top-level directory of this distribution * and at http://www.gnu.org/licenses/. * */ #ifndef SRSRAN_UCI_NR_H #define SRSRAN_UCI_NR_H #include "srsran/phy/common/phy_common_nr.h" #include "srsran/phy/fec/crc.h" #include "srsran/phy/fec/polar/polar_code.h" #include "srsran/phy/fec/polar/polar_decoder.h" #include "srsran/phy/fec/polar/polar_encoder.h" #include "srsran/phy/fec/polar/polar_rm.h" #include "srsran/phy/phch/phch_cfg_nr.h" #include "srsran/phy/phch/pucch_cfg_nr.h" #include "uci_cfg_nr.h" #include #include /** * @brief NR-UCI Encoder/decoder initialization arguments */ typedef struct { bool disable_simd; ///< Disable Polar code SIMD float block_code_threshold; ///< Set normalised block code threshold (receiver only) float one_bit_threshold; ///< Decode threshold for 1 bit (receiver only) } srsran_uci_nr_args_t; typedef struct { srsran_polar_rm_t rm_tx; srsran_polar_rm_t rm_rx; srsran_polar_encoder_t encoder; srsran_polar_decoder_t decoder; srsran_crc_t crc6; srsran_crc_t crc11; srsran_polar_code_t code; uint8_t* bit_sequence; ///< UCI bit sequence uint8_t* c; ///< UCI code-block prior encoding or after decoding uint8_t* allocated; ///< Polar code intermediate uint8_t* d; ///< Polar code encoded intermediate float block_code_threshold; ///< Decode threshold for block code (3-11 bits) float one_bit_threshold; ///< Decode threshold for 1 bit } srsran_uci_nr_t; /** * @brief Calculates the number of bits carried by PUCCH formats 2, 3 and 4 from the PUCCH resource * @remark Defined in TS 38.212 Table 6.3.1.4-1: Total rate matching output sequence length Etot * @param resource PUCCH format 2, 3 or 4 Resource provided by upper layers * @return The number of bits if the provided resource is valid, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_pucch_format_2_3_4_E(const srsran_pucch_nr_resource_t* resource); /** * @brief Calculates in advance how many CRC bits will be appended for a given amount of UCI bits (A) * @remark Defined in TS 38.212 section 6.3.1.2 Code block segmentation and CRC attachment * @param A Number of UCI bits to transmit */ SRSRAN_API uint32_t srsran_uci_nr_crc_len(uint32_t A); /** * @brief Initialises NR-UCI encoder/decoder object * @param[in,out] q NR-UCI object * @param[in] args Configuration arguments * @return SRSRAN_SUCCESS if initialization is successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_init(srsran_uci_nr_t* q, const srsran_uci_nr_args_t* args); /** * @brief Deallocates NR-UCI encoder/decoder object * @param[in,out] q NR-UCI object */ SRSRAN_API void srsran_uci_nr_free(srsran_uci_nr_t* q); /** * @brief Encodes UCI bits * * @attention Compatible only with PUCCH formats 2, 3 and 4 * * @remark Defined in TS 38.212 section 6.3.1.1 * * @param[in,out] q NR-UCI object * @param[in] pucch_cfg Higher layers PUCCH configuration * @param[in] uci_cfg UCI configuration * @param[in] uci_value UCI values * @param[out] o Output encoded bits * @return Number of encoded bits if encoding is successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_encode_pucch(srsran_uci_nr_t* q, const srsran_pucch_nr_resource_t* pucch_resource, const srsran_uci_cfg_nr_t* uci_cfg, const srsran_uci_value_nr_t* value, uint8_t* o); /** * @brief Decoder UCI bits * * @attention Compatible only with PUCCH formats 2, 3 and 4 * * @param[in,out] q NR-UCI object * @param[in] pucch_resource_cfg * @param[in] uci_cfg * @param[in] llr * @param[out] value * @return SRSRAN_SUCCESSFUL if it is successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_decode_pucch(srsran_uci_nr_t* q, const srsran_pucch_nr_resource_t* pucch_resource_cfg, const srsran_uci_cfg_nr_t* uci_cfg, int8_t* llr, srsran_uci_value_nr_t* value); /** * @brief Calculates total number of encoded bits for HARQ-ACK multiplexing in PUSCH * @param[in] cfg PUSCH transmission configuration * @return The number of encoded bits if successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_pusch_ack_nof_bits(const srsran_uci_nr_pusch_cfg_t* cfg, uint32_t O_ack); /** * @brief Encodes HARQ-ACK bits for PUSCH transmission * @param[in,out] q NR-UCI object * @param[in] cfg UCI configuration * @param[in] value UCI value * @param[out] o_ack Encoded ack bits * @return The number of encoded bits if successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_encode_pusch_ack(srsran_uci_nr_t* q, const srsran_uci_cfg_nr_t* cfg, const srsran_uci_value_nr_t* value, uint8_t* o_ack); /** * @brief Decodes HARQ-ACK bits for PUSCH transmission * @param[in,out] q NR-UCI object * @param[in] cfg UCI configuration * @param[in] llr Provides softbits LLR * @param[out] value UCI value * @return SRSRAN_SUCCESS if the decoding process was successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_decode_pusch_ack(srsran_uci_nr_t* q, const srsran_uci_cfg_nr_t* cfg, int8_t* llr, srsran_uci_value_nr_t* value); /** * @brief Calculates total number of encoded bits for CSI part 1 multiplexing in PUSCH * @param[in] cfg UCI configuration * @return The number of encoded bits if valid, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_pusch_csi1_nof_bits(const srsran_uci_cfg_nr_t* cfg); /** * @brief Encodes CSI part 1 bits for PUSCH transmission * @param[in,out] q NR-UCI object * @param[in] cfg UCI configuration * @param[in] value UCI value * @param[out] o_ack Encoded CSI part 1 bits * @return The number of encoded bits if successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_encode_pusch_csi1(srsran_uci_nr_t* q, const srsran_uci_cfg_nr_t* cfg, const srsran_uci_value_nr_t* value, uint8_t* o); /** * @brief Decodes CSI part 1 bits for PUSCH transmission * @param[in,out] q NR-UCI object * @param[in] cfg UCI configuration * @param[in] llr Provides softbits LLR * @param[out] value UCI value * @return SRSRAN_SUCCESS if the decoding process was successful, SRSRAN_ERROR code otherwise */ SRSRAN_API int srsran_uci_nr_decode_pusch_csi1(srsran_uci_nr_t* q, const srsran_uci_cfg_nr_t* cfg, int8_t* llr, srsran_uci_value_nr_t* value); /** * @brief Calculates the total number of UCI bits * @param uci_cfg UCI configuration * @return The number of total bits carrying HARQ ACK, CSI reports and SR bits */ SRSRAN_API uint32_t srsran_uci_nr_total_bits(const srsran_uci_cfg_nr_t* uci_cfg); /** * @brief Converts to string an UCI data structure * @param uci_data UCO data structure * @param str Destination string * @param str_len String length * @return Resultant string length */ SRSRAN_API uint32_t srsran_uci_nr_info(const srsran_uci_data_nr_t* uci_data, char* str, uint32_t str_len); #endif // SRSRAN_UCI_NR_H