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