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202 lines
7.1 KiB
C++
202 lines
7.1 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 SRSENB_SCHEDULER_H
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#define SRSENB_SCHEDULER_H
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#include "scheduler_grid.h"
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#include "scheduler_harq.h"
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#include "scheduler_ue.h"
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#include "srslte/common/log.h"
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#include "srslte/interfaces/enb_interfaces.h"
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#include "srslte/interfaces/sched_interface.h"
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#include <map>
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#include <mutex>
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#include <pthread.h>
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#include <queue>
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namespace srsenb {
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namespace sched_utils {
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inline bool is_in_tti_interval(uint32_t tti, uint32_t tti1, uint32_t tti2)
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{
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tti %= 10240;
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tti1 %= 10240;
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tti2 %= 10240;
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if (tti1 <= tti2) {
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return tti >= tti1 and tti <= tti2;
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}
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return tti >= tti1 or tti <= tti2;
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}
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} // namespace sched_utils
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//! struct to bundle together all the sched arguments, and share them with all the sched sub-components
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class sched_params_t
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{
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public:
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srslte::log* log_h = nullptr;
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sched_interface::cell_cfg_t* cfg = nullptr;
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sched_interface::sched_args_t sched_cfg = {};
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srslte_regs_t* regs = nullptr;
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std::array<sched_ue::sched_dci_cce_t, 3> common_locations = {};
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std::array<std::array<sched_ue::sched_dci_cce_t, 10>, 3> rar_locations = {};
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std::array<uint32_t, 3> 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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sched_params_t();
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bool set_cfg(srslte::log* log_, sched_interface::cell_cfg_t* cfg_, srslte_regs_t* regs_);
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};
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/* Caution: User addition (ue_cfg) and removal (ue_rem) are not thread-safe
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* Rest of operations are thread-safe
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*
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* The subclass sched_ue is thread-safe so that access to shared variables like buffer states
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* from scheduler thread and other threads is protected for each individual user.
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*/
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class sched : public sched_interface
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{
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public:
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/*************************************************************
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*
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* Scheduling metric interface definition
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*
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************************************************************/
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class metric_dl
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{
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public:
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/* Virtual methods for user metric calculation */
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virtual void set_params(const sched_params_t& sched_params_) = 0;
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virtual void sched_users(std::map<uint16_t, sched_ue>& ue_db, dl_tti_sched_t* tti_sched, uint32_t cc_idx) = 0;
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};
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class metric_ul
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{
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public:
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/* Virtual methods for user metric calculation */
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virtual void set_params(const sched_params_t& sched_params_) = 0;
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virtual void sched_users(std::map<uint16_t, sched_ue>& ue_db, ul_tti_sched_t* tti_sched, uint32_t cc_idx) = 0;
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};
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/*************************************************************
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*
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* FAPI-like Interface
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*
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************************************************************/
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sched();
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~sched();
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void init(rrc_interface_mac* rrc, srslte::log* log);
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void set_metric(metric_dl* dl_metric, metric_ul* ul_metric);
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int cell_cfg(cell_cfg_t* cell_cfg) final;
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void set_sched_cfg(sched_args_t* sched_cfg);
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int reset() final;
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int ue_cfg(uint16_t rnti, ue_cfg_t* ue_cfg) final;
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int ue_rem(uint16_t rnti) final;
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bool ue_exists(uint16_t rnti) final;
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void ue_needs_ta_cmd(uint16_t rnti, uint32_t nof_ta_cmd);
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void phy_config_enabled(uint16_t rnti, bool enabled);
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int bearer_ue_cfg(uint16_t rnti, uint32_t lc_id, ue_bearer_cfg_t* cfg) final;
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int bearer_ue_rem(uint16_t rnti, uint32_t lc_id) final;
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uint32_t get_ul_buffer(uint16_t rnti) final;
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uint32_t get_dl_buffer(uint16_t rnti) final;
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int dl_rlc_buffer_state(uint16_t rnti, uint32_t lc_id, uint32_t tx_queue, uint32_t retx_queue) final;
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int dl_mac_buffer_state(uint16_t rnti, uint32_t ce_code) final;
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int dl_ant_info(uint16_t rnti, asn1::rrc::phys_cfg_ded_s::ant_info_c_* dedicated);
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int dl_ack_info(uint32_t tti, uint16_t rnti, uint32_t cc_idx, uint32_t tb_idx, bool ack) final;
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int dl_rach_info(uint32_t cc_idx, dl_sched_rar_info_t rar_info) final;
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int dl_ri_info(uint32_t tti, uint16_t rnti, uint32_t cc_idx, uint32_t ri_value) final;
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int dl_pmi_info(uint32_t tti, uint16_t rnti, uint32_t cc_idx, uint32_t pmi_value) final;
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int dl_cqi_info(uint32_t tti, uint16_t rnti, uint32_t cc_idx, uint32_t cqi_value) final;
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int ul_crc_info(uint32_t tti, uint16_t rnti, uint32_t cc_idx, bool crc) final;
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int ul_sr_info(uint32_t tti, uint16_t rnti) override;
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int ul_bsr(uint16_t rnti, uint32_t lcid, uint32_t bsr, bool set_value = true) final;
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int ul_recv_len(uint16_t rnti, uint32_t lcid, uint32_t len) final;
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int ul_phr(uint16_t rnti, int phr) final;
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int ul_cqi_info(uint32_t tti, uint16_t rnti, uint32_t cc_idx, uint32_t cqi, uint32_t ul_ch_code) final;
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int dl_sched(uint32_t tti, uint32_t cc_idx, dl_sched_res_t& sched_result) final;
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int ul_sched(uint32_t tti, uint32_t cc_idx, ul_sched_res_t& sched_result) final;
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/* Custom functions
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*/
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void set_dl_tti_mask(uint8_t* tti_mask, uint32_t nof_sfs) final;
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void tpc_inc(uint16_t rnti);
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void tpc_dec(uint16_t rnti);
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// Static Methods
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static uint32_t get_rvidx(uint32_t retx_idx)
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{
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const static int 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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static void generate_cce_location(srslte_regs_t* regs,
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sched_ue::sched_dci_cce_t* location,
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uint32_t cfi,
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uint32_t sf_idx = 0,
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uint16_t rnti = 0);
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static uint32_t aggr_level(uint32_t aggr_idx) { return 1u << aggr_idx; }
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class carrier_sched;
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protected:
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srslte::log* log_h;
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rrc_interface_mac* rrc;
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sched_params_t sched_params;
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pthread_rwlock_t rwlock;
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cell_cfg_t cfg;
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// This is for computing DCI locations
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srslte_regs_t regs;
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// Helper methods
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template <typename Func>
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int ue_db_access(uint16_t rnti, Func);
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std::map<uint16_t, sched_ue> ue_db;
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// independent schedulers for each carrier
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std::vector<std::unique_ptr<carrier_sched> > carrier_schedulers;
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std::array<uint32_t, 10> pdsch_re;
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uint32_t current_tti;
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bool configured;
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};
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} // namespace srsenb
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#endif // SRSENB_SCHEDULER_H
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