mirror of https://github.com/PentHertz/srsLTE.git
133 lines
4.0 KiB
C++
133 lines
4.0 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_CARRIER_H
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#define SRSRAN_SCHED_CARRIER_H
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#include "sched.h"
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#include "schedulers/sched_base.h"
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#include "srsran/srslog/srslog.h"
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namespace srsenb {
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class bc_sched;
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class ra_sched;
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class sched::carrier_sched
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{
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public:
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explicit carrier_sched(rrc_interface_mac* rrc_,
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std::map<uint16_t, std::unique_ptr<sched_ue> >* ue_db_,
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uint32_t enb_cc_idx_,
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sched_result_ringbuffer* sched_results_);
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~carrier_sched();
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void reset();
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void carrier_cfg(const sched_cell_params_t& sched_params_);
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void set_dl_tti_mask(uint8_t* tti_mask, uint32_t nof_sfs);
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const cc_sched_result& generate_tti_result(srsran::tti_point tti_rx);
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int dl_rach_info(dl_sched_rar_info_t rar_info);
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// getters
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const ra_sched* get_ra_sched() const { return ra_sched_ptr.get(); }
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//! Get a subframe result for a given tti
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const sf_sched_result* get_sf_result(tti_point tti_rx) const;
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private:
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//! Compute DL scheduler result for given TTI
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void alloc_dl_users(sf_sched* tti_result);
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//! Compute UL scheduler result for given TTI
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int alloc_ul_users(sf_sched* tti_sched);
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//! Get sf_sched for a given TTI
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sf_sched* get_sf_sched(srsran::tti_point tti_rx);
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// args
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const sched_cell_params_t* cc_cfg = nullptr;
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srslog::basic_logger& logger;
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rrc_interface_mac* rrc = nullptr;
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std::map<uint16_t, std::unique_ptr<sched_ue> >* ue_db = nullptr;
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const uint32_t enb_cc_idx;
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// Subframe scheduling logic
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srsran::circular_array<sf_sched, TTIMOD_SZ> sf_scheds;
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// scheduling results
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sched_result_ringbuffer* prev_sched_results;
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std::vector<uint8_t> sf_dl_mask; ///< Some TTIs may be forbidden for DL sched due to MBMS
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std::unique_ptr<bc_sched> bc_sched_ptr;
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std::unique_ptr<ra_sched> ra_sched_ptr;
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std::unique_ptr<sched_base> sched_algo;
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};
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//! Broadcast (SIB + paging) scheduler
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class bc_sched
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{
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public:
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explicit bc_sched(const sched_cell_params_t& cfg_, rrc_interface_mac* rrc_);
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void dl_sched(sf_sched* tti_sched);
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void reset();
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private:
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struct sched_sib_t {
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bool is_in_window = false;
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tti_point window_start{};
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uint32_t n_tx = 0;
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};
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void update_si_windows(sf_sched* tti_sched);
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void alloc_sibs(sf_sched* tti_sched);
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void alloc_paging(sf_sched* tti_sched);
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// args
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const sched_cell_params_t* cc_cfg = nullptr;
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rrc_interface_mac* rrc = nullptr;
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srslog::basic_logger& logger;
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std::array<sched_sib_t, sched_interface::MAX_SIBS> pending_sibs;
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// TTI specific
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tti_point current_tti{};
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uint32_t bc_aggr_level = 2;
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};
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//! RAR/Msg3 scheduler
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class ra_sched
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{
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public:
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using dl_sched_rar_info_t = sched_interface::dl_sched_rar_info_t;
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using dl_sched_rar_t = sched_interface::dl_sched_rar_t;
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using dl_sched_rar_grant_t = sched_interface::dl_sched_rar_grant_t;
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explicit ra_sched(const sched_cell_params_t& cfg_, sched_ue_list& ue_db_);
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void dl_sched(sf_sched* tti_sched);
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void ul_sched(sf_sched* sf_dl_sched, sf_sched* sf_msg3_sched);
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int dl_rach_info(dl_sched_rar_info_t rar_info);
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void reset();
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private:
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alloc_result allocate_pending_rar(sf_sched* tti_sched, const pending_rar_t& rar, uint32_t& nof_grants_alloc);
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// args
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srslog::basic_logger& logger;
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const sched_cell_params_t* cc_cfg = nullptr;
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sched_ue_list* ue_db = nullptr;
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std::deque<pending_rar_t> pending_rars;
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uint32_t rar_aggr_level = 2;
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static const uint32_t PRACH_RAR_OFFSET = 3; // TS 36.321 Sec. 5.1.4
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};
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} // namespace srsenb
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#endif // SRSRAN_SCHED_CARRIER_H
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