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118 lines
3.5 KiB
C++
118 lines
3.5 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 SRSUE_PROC_RA_NR_H
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#define SRSUE_PROC_RA_NR_H
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#include <atomic>
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#include <mutex>
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#include <stdint.h>
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#include "mac_nr_interfaces.h"
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#include "srsran/common/common.h"
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#include "srsran/common/task_scheduler.h"
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#include "srsran/interfaces/ue_nr_interfaces.h"
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#include "srsran/srslog/srslog.h"
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namespace srsue {
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class proc_ra_nr
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{
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public:
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proc_ra_nr(mac_interface_proc_ra_nr& mac_, srslog::basic_logger& logger_);
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~proc_ra_nr(){};
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void init(phy_interface_mac_nr* phy_h_, srsran::ext_task_sched_handle* task_sched_);
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void set_config(const srsran::rach_nr_cfg_t& rach_cfg);
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bool is_contention_resolution();
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bool is_rar_opportunity(uint32_t tti);
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bool has_rar_rnti();
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uint16_t get_rar_rnti();
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bool has_temp_crnti();
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uint16_t get_temp_crnti();
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// PHY interfaces
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void prach_sent(uint32_t tti, uint32_t s_id, uint32_t t_id, uint32_t f_id, uint32_t ul_carrier_id);
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void handle_rar_pdu(mac_interface_phy_nr::tb_action_dl_result_t& grant);
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void pdcch_to_crnti();
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void start_by_rrc();
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void start_by_mac();
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void reset();
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private:
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static const uint32_t PRACH_SEND_CALLBACK_TIMEOUT =
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16 * 10; ///< Limited from frame system number opportunity period in TS 38.211 tables 6.3.3.2-2, 6.3.3.2-3
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///< and 6.3.3.2-4
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mac_interface_proc_ra_nr& mac;
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srslog::basic_logger& logger;
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phy_interface_mac_nr* phy = nullptr;
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srsran::ext_task_sched_handle* task_sched = nullptr;
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srsran::task_multiqueue::queue_handle task_queue;
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int ra_window_length = -1, ra_window_start = -1;
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uint16_t rar_rnti = SRSRAN_INVALID_RNTI;
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uint16_t temp_crnti = SRSRAN_INVALID_RNTI;
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srsran::rach_nr_cfg_t rach_cfg = {};
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bool configured = false;
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enum ra_state_t {
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IDLE = 0,
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PDCCH_SETUP,
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WAITING_FOR_PRACH_SENT,
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WAITING_FOR_RESPONSE_RECEPTION,
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WAITING_FOR_CONTENTION_RESOLUTION,
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WAITING_FOR_COMPLETION,
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MAX_RA_STATES,
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};
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std::atomic<ra_state_t> state = {IDLE};
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enum initiators_t { MAC, RRC, initiators_t_NULLTYPE };
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std::atomic<initiators_t> started_by = {initiators_t_NULLTYPE};
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srsran::timer_handler::unique_timer prach_send_timer;
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srsran::timer_handler::unique_timer rar_timeout_timer;
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srsran::timer_handler::unique_timer contention_resolution_timer;
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srsran::timer_handler::unique_timer backoff_timer;
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// 38.321 5.1.1 Variables
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uint32_t preamble_index = 0;
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uint32_t preamble_transmission_counter = 0;
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uint32_t preamble_backoff = 0; // in ms
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uint32_t preamble_power_ramping_step = 0;
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int preamble_received_target_power = 0;
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uint32_t scaling_factor_bi = 0;
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// uint32_t temporary_c_rnti;
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uint32_t power_offset_2step_ra = 0;
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// not explicty mentioned
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uint32_t preambleTransMax = 0;
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uint32_t prach_occasion = 0;
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uint32_t current_ta = 0;
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void timer_expired(uint32_t timer_id);
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// 38.321 Steps 5.1.1 - 5.1.6
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void ra_procedure_initialization();
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void ra_resource_selection();
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void ra_preamble_transmission();
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void ra_response_reception(const mac_interface_phy_nr::tb_action_dl_result_t& tb);
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void ra_contention_resolution();
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void ra_contention_resolution(uint64_t rx_contention_id);
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void ra_completion();
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void ra_error();
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};
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} // namespace srsue
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#endif |