mirror of https://github.com/PentHertz/srsLTE.git
213 lines
7.7 KiB
C
213 lines
7.7 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsLTE library.
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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: pucch.h
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*
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* Description: Physical uplink control channel.
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*
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* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 5.4
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*****************************************************************************/
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#ifndef PUCCH_
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#define PUCCH_
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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/common/sequence.h"
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#include "srslte/phy/modem/mod.h"
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#include "srslte/phy/phch/cqi.h"
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#include "srslte/phy/phch/uci.h"
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#define SRSLTE_PUCCH_N_SEQ 12
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#define SRSLTE_PUCCH2_NOF_BITS SRSLTE_UCI_CQI_CODED_PUCCH_B
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#define SRSLTE_PUCCH_MAX_BITS SRSLTE_CQI_MAX_BITS
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#define SRSLTE_PUCCH_MAX_SYMBOLS 120
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typedef enum SRSLTE_API {
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SRSLTE_PUCCH_FORMAT_1 = 0,
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SRSLTE_PUCCH_FORMAT_1A,
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SRSLTE_PUCCH_FORMAT_1B,
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SRSLTE_PUCCH_FORMAT_2,
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SRSLTE_PUCCH_FORMAT_2A,
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SRSLTE_PUCCH_FORMAT_2B,
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SRSLTE_PUCCH_FORMAT_ERROR,
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} srslte_pucch_format_t;
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typedef struct SRSLTE_API {
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bool sps_enabled;
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uint32_t tpc_for_pucch;
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uint32_t N_pucch_1;
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uint32_t n_pucch_1[4]; // 4 n_pucch resources specified by RRC
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uint32_t n_pucch_2;
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uint32_t n_pucch_sr;
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}srslte_pucch_sched_t;
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typedef struct SRSLTE_API {
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// Common configuration
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uint32_t delta_pucch_shift;
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uint32_t n_rb_2;
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uint32_t N_cs;
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uint32_t n1_pucch_an;
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// SRS configuration
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bool srs_configured;
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uint32_t srs_cs_subf_cfg;
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bool srs_simul_ack;
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} srslte_pucch_cfg_t;
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typedef struct {
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srslte_sequence_t seq_f2[SRSLTE_NSUBFRAMES_X_FRAME];
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} srslte_pucch_user_t;
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/* PUCCH object */
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typedef struct SRSLTE_API {
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srslte_cell_t cell;
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srslte_pucch_cfg_t pucch_cfg;
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srslte_modem_table_t mod;
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srslte_uci_cqi_pucch_t cqi;
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srslte_pucch_user_t **users;
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uint8_t bits_scram[SRSLTE_PUCCH_MAX_BITS];
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cf_t d[SRSLTE_PUCCH_MAX_BITS/2];
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uint32_t n_cs_cell[SRSLTE_NSLOTS_X_FRAME][SRSLTE_CP_NORM_NSYMB];
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uint32_t f_gh[SRSLTE_NSLOTS_X_FRAME];
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float tmp_arg[SRSLTE_PUCCH_N_SEQ];
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cf_t *z;
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cf_t *z_tmp;
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cf_t *ce;
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bool shortened;
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bool group_hopping_en;
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float threshold_format1;
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float threshold_format1a;
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float last_corr;
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uint32_t last_n_prb;
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uint32_t last_n_pucch;
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}srslte_pucch_t;
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SRSLTE_API int srslte_pucch_init(srslte_pucch_t *q,
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srslte_cell_t cell);
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SRSLTE_API void srslte_pucch_free(srslte_pucch_t *q);
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SRSLTE_API bool srslte_pucch_set_cfg(srslte_pucch_t* q,
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srslte_pucch_cfg_t* cfg,
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bool group_hopping_en);
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SRSLTE_API void srslte_pucch_set_threshold(srslte_pucch_t *q,
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float format1,
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float format1a);
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SRSLTE_API int srslte_pucch_set_crnti(srslte_pucch_t *q,
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uint16_t c_rnti);
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SRSLTE_API void srslte_pucch_clear_rnti(srslte_pucch_t *q,
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uint16_t rnti);
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SRSLTE_API uint32_t srslte_pucch_nof_symbols(srslte_pucch_cfg_t *cfg,
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srslte_pucch_format_t format,
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bool shortened);
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SRSLTE_API float srslte_pucch_get_last_corr(srslte_pucch_t* q);
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SRSLTE_API int srslte_pucch_encode(srslte_pucch_t *q,
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srslte_pucch_format_t format,
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uint32_t n_pucch, // n_pucch_1 or n_pucch_2 depending on format
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uint32_t sf_idx,
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uint16_t rnti,
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uint8_t bits[SRSLTE_PUCCH_MAX_BITS],
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cf_t *sf_symbols);
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SRSLTE_API int srslte_pucch_decode(srslte_pucch_t *q,
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srslte_pucch_format_t format,
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uint32_t n_pucch, // n_pucch_1 or n_pucch_2 depending on format
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uint32_t sf_idx,
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uint16_t rnti,
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cf_t *sf_symbols,
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cf_t *ce,
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float noise_estimate,
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uint8_t bits[SRSLTE_PUCCH_MAX_BITS]);
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SRSLTE_API float srslte_pucch_alpha_format1(uint32_t n_cs_cell[SRSLTE_NSLOTS_X_FRAME][SRSLTE_CP_NORM_NSYMB],
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srslte_pucch_cfg_t *cfg,
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uint32_t n_pucch,
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srslte_cp_t cp,
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bool is_dmrs,
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uint32_t ns,
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uint32_t l,
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uint32_t *n_oc,
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uint32_t *n_prime_ns);
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SRSLTE_API float srslte_pucch_alpha_format2(uint32_t n_cs_cell[SRSLTE_NSLOTS_X_FRAME][SRSLTE_CP_NORM_NSYMB],
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srslte_pucch_cfg_t *cfg,
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uint32_t n_pucch,
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uint32_t ns,
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uint32_t l);
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SRSLTE_API uint32_t srslte_pucch_m(srslte_pucch_cfg_t *cfg,
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srslte_pucch_format_t format,
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uint32_t n_pucch,
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srslte_cp_t cp);
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SRSLTE_API srslte_pucch_format_t srslte_pucch_get_format(srslte_uci_data_t *uci_data,
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srslte_cp_t cp);
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SRSLTE_API uint32_t srslte_pucch_get_npucch(uint32_t n_cce,
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srslte_pucch_format_t format,
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bool has_scheduling_request,
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srslte_pucch_sched_t *pucch_sched);
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SRSLTE_API uint32_t srslte_pucch_n_prb(srslte_pucch_cfg_t *cfg,
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srslte_pucch_format_t format,
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uint32_t n_pucch,
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uint32_t nof_prb,
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srslte_cp_t cp,
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uint32_t ns);
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SRSLTE_API int srslte_pucch_n_cs_cell(srslte_cell_t cell,
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uint32_t n_cs_cell[SRSLTE_NSLOTS_X_FRAME][SRSLTE_CP_NORM_NSYMB]);
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SRSLTE_API int srslte_pucch_format2ab_mod_bits(srslte_pucch_format_t format,
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uint8_t bits[2],
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cf_t *d_10);
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SRSLTE_API bool srslte_pucch_cfg_isvalid(srslte_pucch_cfg_t *cfg,
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uint32_t nof_prb);
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SRSLTE_API bool srslte_n_pucch_isvalid(srslte_pucch_t *q,
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uint32_t n_pucch);
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SRSLTE_API void srslte_pucch_cfg_default(srslte_pucch_cfg_t *cfg);
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#endif
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