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137 lines
4.3 KiB
C++
137 lines
4.3 KiB
C++
/*
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* Copyright 2013-2019 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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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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#ifndef SRSLTE_SCHEDULER_CARRIER_H
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#define SRSLTE_SCHEDULER_CARRIER_H
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#include "scheduler.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_, std::map<uint16_t, sched_ue>* ue_db_, uint32_t enb_cc_idx_);
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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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sf_sched* generate_tti_result(uint32_t 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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const sf_sched* get_sf_sched_ptr(uint32_t tti_rx) const { return &sf_scheds[tti_rx % sf_scheds.size()]; }
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private:
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void generate_phich(sf_sched* tti_sched);
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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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// args
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const sched_cell_params_t* cc_cfg = nullptr;
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srslte::log* log_h = nullptr;
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rrc_interface_mac* rrc = nullptr;
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std::map<uint16_t, sched_ue>* ue_db = nullptr;
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std::unique_ptr<metric_dl> dl_metric;
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std::unique_ptr<metric_ul> ul_metric;
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const uint32_t enb_cc_idx;
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// derived from args
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prbmask_t prach_mask;
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prbmask_t pucch_mask;
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// TTI result storage and management
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std::array<sf_sched, TTIMOD_SZ> sf_scheds;
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sf_sched* get_sf_sched(uint32_t tti_rx) { return &sf_scheds[tti_rx % sf_scheds.size()]; }
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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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// protects access to bc/ra schedulers and harqs
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std::mutex carrier_mutex;
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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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uint32_t window_start = 0;
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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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std::array<sched_sib_t, sched_interface::MAX_SIBS> pending_sibs;
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// TTI specific
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uint32_t current_sfn = 0, current_sf_idx = 0;
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uint32_t current_tti = 0;
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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_, srslte::log* log_, std::map<uint16_t, sched_ue>& ue_db_);
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void dl_sched(sf_sched* tti_sched);
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void ul_sched(sf_sched* tti_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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void sched_msg3(sf_sched* sf_msg3_sched, const sched_interface::dl_sched_res_t& dl_sched_result);
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private:
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// args
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srslte::log* log_h = nullptr;
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const sched_cell_params_t* cc_cfg = nullptr;
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std::map<uint16_t, sched_ue>* ue_db = nullptr;
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std::deque<sf_sched::pending_rar_t> pending_rars;
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uint32_t rar_aggr_level = 2;
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};
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} // namespace srsenb
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#endif // SRSLTE_SCHEDULER_CARRIER_H
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