srsRAN_4G/srsue/hdr/phy/nr/cc_worker.h

/*
 * 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/.
 *
 */

#ifndef SRSLTE_NR_CC_WORKER_H
#define SRSLTE_NR_CC_WORKER_H

#include "srslte/common/log.h"
#include "srslte/srslte.h"
#include "srsue/hdr/phy/phy_common.h"
#include <array>
#include <vector>

namespace srsue {
namespace nr {

typedef struct {
  uint32_t               nof_carriers;
  srslte_ue_dl_nr_args_t dl;
} phy_nr_args_t;

typedef struct {
  srslte_sch_cfg_nr_t         pdsch;
  srslte_prach_cfg_t          prach;
  srslte_ue_dl_nr_pdcch_cfg_t pdcch;
} phy_nr_cfg_t;

class phy_nr_state
{
public:
  srslte_carrier_nr_t carrier = {};
  phy_nr_args_t       args    = {};
  phy_nr_cfg_t        cfg     = {};

  phy_nr_state()
  {
    carrier.id              = 500;
    carrier.nof_prb         = 100;
    carrier.max_mimo_layers = 1;

    // Default arguments
    args.nof_carriers              = 1;
    args.dl.nof_rx_antennas        = 1;
    args.dl.nof_max_prb            = 100;
    args.dl.pdsch.measure_evm      = true;
    args.dl.pdsch.measure_time     = true;
    args.dl.pdsch.sch.disable_simd = false;

    // Default PDSCH configuration
    cfg.pdsch.sch_cfg.mcs_table = srslte_mcs_table_256qam;

    // Default PRACH configuration
    cfg.prach.is_nr            = true;
    cfg.prach.config_idx       = 16;
    cfg.prach.root_seq_idx     = 1;
    cfg.prach.freq_offset      = 0;
    cfg.prach.zero_corr_zone   = 0;
    cfg.prach.num_ra_preambles = 64;
    cfg.prach.hs_flag          = false;

    // commonControlResourceSet
    //    controlResourceSetId: 1
    //    frequencyDomainResources: ff0000000000
    //    duration: 1
    //    cce-REG-MappingType: nonInterleaved (1)
    //        nonInterleaved: NULL
    //    precoderGranularity: sameAsREG-bundle (0)
    cfg.pdcch.coreset[1].coreset_id           = 1;
    cfg.pdcch.coreset[1].precoder_granularity = srslte_coreset_precoder_granularity_reg_bundle;
    cfg.pdcch.coreset[1].duration             = 1;
    cfg.pdcch.coreset[1].mapping_type         = srslte_coreset_mapping_type_non_interleaved;
    for (uint32_t i = 0; i < SRSLTE_CORESET_FREQ_DOMAIN_RES_SIZE; i++) {
      cfg.pdcch.coreset[1].freq_resources[i] = (i < 8);
    }
    cfg.pdcch.coreset_present[1] = true;

    // SearchSpace
    //    searchSpaceId: 1
    //    controlResourceSetId: 1
    //    monitoringSlotPeriodicityAndOffset: sl1 (0)
    //        sl1: NULL
    //    monitoringSymbolsWithinSlot: 8000 [bit length 14, 2 LSB pad bits, 1000 0000  0000 00.. decimal value 8192]
    //    nrofCandidates
    //        aggregationLevel1: n0 (0)
    //        aggregationLevel2: n0 (0)
    //        aggregationLevel4: n1 (1)
    //        aggregationLevel8: n0 (0)
    //        aggregationLevel16: n0 (0)
    //    searchSpaceType: common (0)
    //        common
    //            dci-Format0-0-AndFormat1-0
    cfg.pdcch.search_space[1].id                = 1;
    cfg.pdcch.search_space[1].coreset_id        = 1;
    cfg.pdcch.search_space[1].nof_candidates[0] = 0;
    cfg.pdcch.search_space[1].nof_candidates[1] = 0;
    cfg.pdcch.search_space[1].nof_candidates[2] = 1;
    cfg.pdcch.search_space[1].nof_candidates[3] = 0;
    cfg.pdcch.search_space[1].nof_candidates[4] = 0;
    cfg.pdcch.search_space[1].type              = srslte_search_space_type_common;
    cfg.pdcch.search_space_present[1]           = true;

    // ra-SearchSpace: 1
    cfg.pdcch.ra_rnti                 = 0x16; //< Supposed to be deduced from PRACH configuration
    cfg.pdcch.ra_search_space_id      = 1;
    cfg.pdcch.ra_search_space_present = true;
  }
};

class cc_worker
{
public:
  cc_worker(uint32_t cc_idx, srslte::log* log, phy_nr_state* phy_state_);
  ~cc_worker();

  bool set_carrier(const srslte_carrier_nr_t* carrier);
  void set_tti(uint32_t tti);

  cf_t*    get_rx_buffer(uint32_t antenna_idx);
  uint32_t get_buffer_len();

  bool work_dl();

  int read_pdsch_d(cf_t* pdsch_d);

private:
  srslte_dl_slot_cfg_t                dl_slot_cfg = {};
  uint32_t                            cc_idx      = 0;
  std::array<cf_t*, SRSLTE_MAX_PORTS> rx_buffer   = {};
  std::array<cf_t*, SRSLTE_MAX_PORTS> tx_buffer   = {};
  uint32_t                            buffer_sz   = 0;
  phy_nr_state*                       phy_state   = nullptr;
  srslte_ue_dl_nr_t                   ue_dl       = {};
  srslte::log*                        log_h       = nullptr;

  // Temporal attributes
  srslte_softbuffer_rx_t softbuffer_rx = {};
  std::vector<uint8_t>   data;

  // Current rnti
  uint16_t rnti = 0;
};

} // namespace nr
} // namespace srsue

#endif // SRSLTE_NR_CC_WORKER_H