/* * Copyright 2013-2020 Software Radio Systems Limited * * This file is part of srsLTE. * * srsLTE 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. * * srsLTE 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/. * */ /****************************************************************************** * File: uci.h * * Description: Uplink control information. Only 1-bit ACK for UCI on PUSCCH is supported * * Reference: 3GPP TS 36.212 version 10.0.0 Release 10 Sec. 5.2.3, 5.2.4 *****************************************************************************/ #ifndef SRSLTE_UCI_H #define SRSLTE_UCI_H #include "srslte/config.h" #include "srslte/phy/common/phy_common.h" #include "srslte/phy/fec/convolutional/viterbi.h" #include "srslte/phy/fec/crc.h" #include "srslte/phy/phch/pusch_cfg.h" #include "srslte/phy/phch/uci_cfg.h" #define SRSLTE_UCI_MAX_CQI_LEN_PUSCH 512 #define SRSLTE_UCI_MAX_CQI_LEN_PUCCH 13 #define SRSLTE_UCI_CQI_CODED_PUCCH_B 20 #define SRSLTE_UCI_STR_MAX_CHAR 32 #define SRSLTE_UCI_M_BASIS_SEQ_LEN 32 typedef struct SRSLTE_API { srslte_crc_t crc; srslte_viterbi_t viterbi; uint8_t tmp_cqi[SRSLTE_UCI_MAX_CQI_LEN_PUSCH]; uint8_t encoded_cqi[3 * SRSLTE_UCI_MAX_CQI_LEN_PUSCH]; int16_t encoded_cqi_s[3 * SRSLTE_UCI_MAX_CQI_LEN_PUSCH]; uint8_t* cqi_table[11]; int16_t* cqi_table_s[11]; } srslte_uci_cqi_pusch_t; typedef struct SRSLTE_API { uint8_t** cqi_table; int16_t** cqi_table_s; } srslte_uci_cqi_pucch_t; SRSLTE_API void srslte_uci_cqi_pucch_init(srslte_uci_cqi_pucch_t* q); SRSLTE_API void srslte_uci_cqi_pucch_free(srslte_uci_cqi_pucch_t* q); SRSLTE_API int srslte_uci_encode_cqi_pucch(uint8_t* cqi_data, uint32_t cqi_len, uint8_t b_bits[SRSLTE_UCI_CQI_CODED_PUCCH_B]); SRSLTE_API int srslte_uci_encode_cqi_pucch_from_table(srslte_uci_cqi_pucch_t* q, uint8_t* cqi_data, uint32_t cqi_len, uint8_t b_bits[SRSLTE_UCI_CQI_CODED_PUCCH_B]); SRSLTE_API int16_t srslte_uci_decode_cqi_pucch(srslte_uci_cqi_pucch_t* q, int16_t b_bits[SRSLTE_CQI_MAX_BITS], // aligned for simd uint8_t* cqi_data, uint32_t cqi_len); /** * Encodes Uplink Control Information using M-basis code block channel coding. * * @param input points to the bit to encode, one word per bit * @param input_len number of bits to encode, the maximum number of bits is 11 * @param output points to the encoded data, one word per bit * @param output_len number of bits of encoded bits */ SRSLTE_API void srslte_uci_encode_m_basis_bits(const uint8_t* input, uint32_t input_len, uint8_t* output, uint32_t output_len); /** * Decodes Uplink Control Information using M-basis code block channel coding. * * @param llr points soft-bits * @param nof_llr number of soft-bits, requires a minimum of 32 soft-bits * @param data points to receice data, one word per bit * @param data_len number of bits to decode, the maximum number of bits is 11 * @return maximum correlation value */ SRSLTE_API int32_t srslte_uci_decode_m_basis_bits(const int16_t* llr, uint32_t nof_llr, uint8_t* data, uint32_t data_len); SRSLTE_API int srslte_uci_cqi_init(srslte_uci_cqi_pusch_t* q); SRSLTE_API void srslte_uci_cqi_free(srslte_uci_cqi_pusch_t* q); SRSLTE_API int srslte_uci_encode_cqi_pusch(srslte_uci_cqi_pusch_t* q, srslte_pusch_cfg_t* cfg, uint8_t* cqi_data, uint32_t cqi_len, float beta, uint32_t Q_prime_ri, uint8_t* q_bits); SRSLTE_API int srslte_uci_decode_cqi_pusch(srslte_uci_cqi_pusch_t* q, srslte_pusch_cfg_t* cfg, int16_t* q_bits, float beta, uint32_t Q_prime_ri, uint32_t cqi_len, uint8_t* cqi_data, bool* cqi_ack); SRSLTE_API int srslte_uci_encode_ack(srslte_pusch_cfg_t* cfg, uint8_t acks[2], uint32_t nof_acks, uint32_t O_cqi, float beta, uint32_t H_prime_total, srslte_uci_bit_t* ri_bits); SRSLTE_API int srslte_uci_encode_ack_ri(srslte_pusch_cfg_t* cfg, uint8_t* data, uint32_t O_ack, uint32_t O_cqi, float beta, uint32_t H_prime_total, bool input_is_ri, uint32_t N_bundle, srslte_uci_bit_t* ri_bits); SRSLTE_API int srslte_uci_decode_ack_ri(srslte_pusch_cfg_t* cfg, int16_t* q_bits, uint8_t* c_seq, float beta, uint32_t H_prime_total, uint32_t O_cqi, srslte_uci_bit_t* ack_ri_bits, uint8_t* data, bool* valid, uint32_t nof_bits, bool is_ri); /** * Calculates the maximum number of coded symbols used by CQI-UCI over PUSCH */ SRSLTE_API uint32_t srslte_qprime_cqi_ext(uint32_t L_prb, uint32_t nof_symbols, uint32_t tbs, float beta); /** * Calculates the maximum number of coded symbols used by ACK/RI over PUSCH */ SRSLTE_API uint32_t srslte_qprime_ack_ext(uint32_t L_prb, uint32_t nof_symbols, uint32_t tbs, uint32_t nof_ack, float beta); /** * Calculates the number of acknowledgements carried by the Uplink Control Information (UCI) deduced from the number of * transport blocks indicated in the UCI's configuration. * * @param uci_cfg is the UCI configuration * @return the number of acknowledgements */ SRSLTE_API uint32_t srslte_uci_cfg_total_ack(const srslte_uci_cfg_t* uci_cfg); SRSLTE_API void srslte_uci_data_reset(srslte_uci_data_t* uci_data); SRSLTE_API int srslte_uci_data_info(srslte_uci_cfg_t* uci_cfg, srslte_uci_value_t* uci_data, char* str, uint32_t maxlen); #endif // SRSLTE_UCI_H