mirror of https://github.com/PentHertz/srsLTE.git
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSRAN_SCHED_HELPERS_H
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#define SRSRAN_SCHED_HELPERS_H
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#include "srsenb/hdr/stack/mac/sched_common.h"
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#include "srsran/interfaces/sched_interface.h"
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#include "srsran/srslog/srslog.h"
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namespace srsenb {
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inline uint32_t aggr_level(uint32_t aggr_idx)
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{
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return 1u << aggr_idx;
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}
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/// Obtain rvidx from nof retxs. This value is stored in DCI
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inline uint32_t get_rvidx(uint32_t retx_idx)
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{
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const static uint32_t rv_idx[4] = {0, 2, 3, 1};
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return rv_idx[retx_idx % 4];
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}
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/// Obtain nof retxs from rvidx.
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inline uint32_t get_nof_retx(uint32_t rv_idx)
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{
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const static uint32_t nof_retxs[4] = {0, 3, 1, 2};
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return nof_retxs[rv_idx % 4];
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}
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cce_frame_position_table generate_cce_location_table(uint16_t rnti, const sched_cell_params_t& cell_cfg);
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/**
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* Generate possible CCE locations a user can use to allocate DCIs
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* @param regs Regs data for the given cell configuration
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* @param location Result of the CCE location computation.
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* @param cfi Number of control symbols used for the PDCCH
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* @param sf_idx subframe index specific to the tx TTI (relevant only for data and RAR transmissions)
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* @param rnti identity of the user (invalid RNTI for RAR and BC transmissions)
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*/
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void generate_cce_location(srsran_regs_t* regs,
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cce_cfi_position_table& locations,
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uint32_t cfi,
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uint32_t sf_idx = 0,
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uint16_t rnti = SRSRAN_INVALID_RNTI);
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/// Obtains TB size *in bytes* for a given MCS and nof allocated prbs
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inline uint32_t get_tbs_bytes(uint32_t mcs, uint32_t nof_alloc_prb, bool use_tbs_index_alt, bool is_ul)
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{
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int tbs_idx = srsran_ra_tbs_idx_from_mcs(mcs, use_tbs_index_alt, is_ul);
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assert(tbs_idx != SRSRAN_ERROR);
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int tbs = srsran_ra_tbs_from_idx((uint32_t)tbs_idx, nof_alloc_prb);
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assert(tbs != SRSRAN_ERROR);
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return (uint32_t)tbs / 8U;
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}
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/// Find lowest DCI aggregation level supported by the UE spectral efficiency
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uint32_t get_aggr_level(uint32_t nof_bits,
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uint32_t dl_cqi,
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uint32_t min_aggr_lvl,
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uint32_t max_aggr_lvl,
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uint32_t cell_nof_prb,
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bool use_tbs_index_alt);
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/*******************************************************
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* sched_interface helper functions
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*******************************************************/
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inline bool operator==(const sched_interface::ue_cfg_t::cc_cfg_t& lhs, const sched_interface::ue_cfg_t::cc_cfg_t& rhs)
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{
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return lhs.enb_cc_idx == rhs.enb_cc_idx and lhs.active == rhs.active;
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}
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/// sanity check the UE CC configuration
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int check_ue_cfg_correctness(const sched_interface::ue_cfg_t& ue_cfg);
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/// Logs DL MAC PDU contents
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void log_dl_cc_results(srslog::basic_logger& logger,
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uint32_t enb_cc_idx,
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const sched_interface::dl_sched_res_t& result);
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/// Logs PHICH contents
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void log_phich_cc_results(srslog::basic_logger& logger,
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uint32_t enb_cc_idx,
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const sched_interface::ul_sched_res_t& result);
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const char* to_string(sched_interface::ue_bearer_cfg_t::direction_t dir);
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} // namespace srsenb
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#endif // SRSRAN_SCHED_HELPERS_H
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