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123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN 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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* srsRAN 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 SRSUE_PROC_BSR_NR_H
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#define SRSUE_PROC_BSR_NR_H
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#include <map>
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#include <stdint.h>
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#include "proc_sr_nr.h"
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#include "srsran/common/task_scheduler.h"
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#include "srsran/mac/bsr_nr.h"
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#include "srsran/mac/mac_sch_pdu_nr.h"
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#include "srsran/srslog/srslog.h"
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#include "srsue/hdr/stack/mac_common/mac_common.h"
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/* Buffer status report procedure */
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namespace srsue {
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class rlc_interface_mac;
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// BSR interface for MUX
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class bsr_interface_mux_nr
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{
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public:
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/// MUX calls BSR to receive the buffer state of a single LCG.
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virtual srsran::mac_sch_subpdu_nr::lcg_bsr_t generate_sbsr() = 0;
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};
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class mux_interface_bsr_nr
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{
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public:
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/// Inform MUX unit to that a BSR needs to be generated in the next UL transmission.
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virtual void generate_bsr_mac_ce(const srsran::bsr_format_nr_t& format) = 0;
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};
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/**
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* @brief BSR procedure for NR according to 3GPP TS 38.321 version 15.3.0
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*
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* @remark: So far only class scelleton.
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*/
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class proc_bsr_nr : public srsran::timer_callback, public bsr_interface_mux_nr
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{
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public:
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explicit proc_bsr_nr(srslog::basic_logger& logger_) : logger(logger_) {}
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int init(proc_sr_nr* sr_proc,
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mux_interface_bsr_nr* mux_,
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rlc_interface_mac* rlc,
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srsran::ext_task_sched_handle* task_sched_);
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void step(uint32_t tti, const mac_buffer_states_t& new_buffer_state);
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void reset();
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int set_config(const srsran::bsr_cfg_nr_t& bsr_cfg);
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int setup_lcid(uint32_t lcid, uint32_t lcg, uint32_t priority);
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void timer_expired(uint32_t timer_id);
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/// Called by MAC when an UL grant is received
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void new_grant_ul(uint32_t grant_size);
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/// MUX interface for BSR generation
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srsran::mac_sch_subpdu_nr::lcg_bsr_t generate_sbsr();
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void set_padding_bytes(uint32_t nof_bytes);
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private:
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const static int QUEUE_STATUS_PERIOD_MS = 1000;
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std::mutex mutex;
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srsran::ext_task_sched_handle* task_sched = nullptr;
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srslog::basic_logger& logger;
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rlc_interface_mac* rlc = nullptr;
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mux_interface_bsr_nr* mux = nullptr;
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proc_sr_nr* sr = nullptr;
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srsran::bsr_cfg_nr_t bsr_cfg = {};
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bool initiated = false;
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mac_buffer_states_t buffer_state;
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// map of LCGs and their priorities, key is the priority (sorted) and the value the LCG
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std::map<uint32_t, uint32_t> lcg_priorities;
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bsr_trigger_type_t triggered_bsr_type = NONE;
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void print_state();
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void set_trigger(bsr_trigger_type_t new_trigger);
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bool check_highest_channel();
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bool check_new_data(const mac_buffer_states_t& new_buffer_state);
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bool check_any_channel();
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uint8_t buff_size_bytes_to_field(uint32_t buffer_size, srsran::bsr_format_nr_t format);
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uint32_t find_max_priority_lcg_with_data();
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srsran::timer_handler::unique_timer timer_periodic;
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srsran::timer_handler::unique_timer timer_retx;
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srsran::timer_handler::unique_timer timer_queue_status_print;
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};
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} // namespace srsue
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#endif // SRSUE_PROC_BSR_NR_H
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