mirror of https://github.com/PentHertz/srsLTE.git
126 lines
4.4 KiB
C++
126 lines
4.4 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_COMMON_H
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#define SRSRAN_SCHED_COMMON_H
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#include "srsran/adt/bounded_bitset.h"
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#include "srsran/common/tti_point.h"
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#include "srsran/interfaces/sched_interface.h"
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namespace srsenb {
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/***********************
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* Constants
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**********************/
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constexpr float tti_duration_ms = 1;
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constexpr uint32_t NOF_AGGR_LEVEL = 4;
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/***********************
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* Helper Types
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**********************/
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/// List of CCE start positions in PDCCH
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using cce_position_list = srsran::bounded_vector<uint32_t, 6>;
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/// Map {L} -> list of CCE positions
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using cce_cfi_position_table = std::array<cce_position_list, NOF_AGGR_LEVEL>;
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/// Map {cfi, L} -> list of CCE positions
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using cce_sf_position_table = std::array<std::array<cce_position_list, NOF_AGGR_LEVEL>, SRSRAN_NOF_CFI>;
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/// Map {sf, cfi, L} -> list of CCE positions
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using cce_frame_position_table = std::array<cce_sf_position_table, SRSRAN_NOF_SF_X_FRAME>;
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/// structs to bundle together all the sched arguments, and share them with all the sched sub-components
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class sched_cell_params_t
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{
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struct regs_deleter {
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void operator()(srsran_regs_t* p);
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};
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public:
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bool set_cfg(uint32_t enb_cc_idx_,
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const sched_interface::cell_cfg_t& cfg_,
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const sched_interface::sched_args_t& sched_args);
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// convenience getters
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uint32_t nof_prbs_to_rbgs(uint32_t nof_prbs) const { return srsran::ceil_div(nof_prbs, P); }
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uint32_t nof_prb() const { return cfg.cell.nof_prb; }
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uint32_t get_dl_lb_nof_re(tti_point tti_tx_dl, uint32_t nof_prbs_alloc) const;
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uint32_t get_dl_nof_res(srsran::tti_point tti_tx_dl, const srsran_dci_dl_t& dci, uint32_t cfi) const;
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uint32_t enb_cc_idx = 0;
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sched_interface::cell_cfg_t cfg = {};
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srsran_pucch_cfg_t pucch_cfg_common = {};
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const sched_interface::sched_args_t* sched_cfg = nullptr;
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std::unique_ptr<srsran_regs_t, regs_deleter> regs;
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cce_sf_position_table common_locations = {};
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cce_frame_position_table rar_locations = {};
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std::array<uint32_t, SRSRAN_NOF_CFI> nof_cce_table = {}; ///< map cfix -> nof cces in PDCCH
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uint32_t P = 0;
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uint32_t nof_rbgs = 0;
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using dl_nof_re_table = srsran::bounded_vector<
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std::array<std::array<std::array<uint32_t, SRSRAN_NOF_CFI>, SRSRAN_NOF_SLOTS_PER_SF>, SRSRAN_NOF_SF_X_FRAME>,
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SRSRAN_MAX_PRB>;
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using dl_lb_nof_re_table = std::array<srsran::bounded_vector<uint32_t, SRSRAN_MAX_PRB>, SRSRAN_NOF_SF_X_FRAME>;
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/// Table of nof REs
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dl_nof_re_table nof_re_table;
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/// Cached computation of Lower bound of nof REs
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dl_lb_nof_re_table nof_re_lb_table;
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};
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//! Bitmask used for CCE allocations
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using pdcch_mask_t = srsran::bounded_bitset<sched_interface::max_cce, true>;
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//! Bitmask that stores the allocared DL RBGs
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using rbgmask_t = srsran::bounded_bitset<25, true>;
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//! Bitmask that stores the allocated UL PRBs
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using prbmask_t = srsran::bounded_bitset<100, true>;
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//! Struct to express a {min,...,max} range of RBGs
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struct prb_interval;
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struct rbg_interval : public srsran::interval<uint32_t> {
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using interval::interval;
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static rbg_interval rbgmask_to_rbgs(const rbgmask_t& mask);
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};
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/// Struct to express a {min,...,max} range of PRBs
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struct prb_interval : public srsran::interval<uint32_t> {
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using interval::interval;
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static prb_interval rbgs_to_prbs(const rbg_interval& rbgs, uint32_t cell_nof_prb);
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static prb_interval riv_to_prbs(uint32_t riv, uint32_t nof_prbs, int nof_vrbs = -1);
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};
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/// Type of Allocation stored in PDSCH/PUSCH
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enum class alloc_type_t { DL_BC, DL_PCCH, DL_RAR, DL_DATA, UL_DATA };
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inline bool is_dl_ctrl_alloc(alloc_type_t a)
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{
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return a == alloc_type_t::DL_BC or a == alloc_type_t::DL_PCCH or a == alloc_type_t::DL_RAR;
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}
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} // namespace srsenb
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namespace fmt {
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template <>
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struct formatter<srsenb::rbg_interval> : public formatter<srsran::interval<uint32_t> > {};
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template <>
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struct formatter<srsenb::prb_interval> : public formatter<srsran::interval<uint32_t> > {};
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} // namespace fmt
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#endif // SRSRAN_SCHED_COMMON_H
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