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104 lines
3.3 KiB
C++
104 lines
3.3 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 SRSLTE_DL_HARQ_NR_H
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#define SRSLTE_DL_HARQ_NR_H
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#include "srsran/interfaces/mac_interface_types.h"
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#include "srsran/interfaces/ue_nr_interfaces.h"
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#include "srsran/srslog/logger.h"
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#include "srsue/hdr/stack/mac_nr/mac_nr_interfaces.h"
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#include <mutex>
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namespace srsue {
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/**
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* @brief Downlink HARQ entity as defined in 5.3.2 of 38.321
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*
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* The class supports a configurable number of HARQ processes (up to 16).
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*
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* The class is configured (init and reset) by the MAC class from the
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* Stack thread context. Main functionality, however, is carried
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* out from a PHY worker context.
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*
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* Concurrent access from threads is protected through rwlocks.
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*
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*/
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class dl_harq_entity_nr
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{
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using mac_nr_grant_dl_t = mac_interface_phy_nr::mac_nr_grant_dl_t;
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public:
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dl_harq_entity_nr(uint8_t cc_idx_, mac_interface_harq_nr* mac_, demux_interface_harq_nr* demux_unit_);
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~dl_harq_entity_nr();
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int32_t set_config(const srsran::dl_harq_cfg_nr_t& cfg_);
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void reset();
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/// PHY->MAC interface for DL processes
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void new_grant_dl(const mac_nr_grant_dl_t& grant, mac_interface_phy_nr::tb_action_dl_t* action);
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void tb_decoded(const mac_nr_grant_dl_t& grant, mac_interface_phy_nr::tb_action_dl_result_t result);
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float get_average_retx();
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private:
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class dl_harq_process_nr
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{
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public:
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dl_harq_process_nr(dl_harq_entity_nr* parent);
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~dl_harq_process_nr();
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bool init(int pid);
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void reset(void);
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uint8_t get_ndi();
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void
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new_grant_dl(const mac_nr_grant_dl_t& grant, const bool& ndi_toggled, mac_interface_phy_nr::tb_action_dl_t* action);
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void tb_decoded(const mac_nr_grant_dl_t& grant, mac_interface_phy_nr::tb_action_dl_result_t result);
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private:
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dl_harq_entity_nr* harq_entity = nullptr;
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srslog::basic_logger& logger;
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bool is_first_tb = true;
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bool is_bcch = false;
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uint32_t pid = 0; // HARQ Proccess ID
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bool acked = false;
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uint32_t n_retx = 0;
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mac_nr_grant_dl_t current_grant = {};
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std::unique_ptr<srsran_softbuffer_rx_t> softbuffer_rx;
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};
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// Private members of dl_harq_entity_nr
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mac_interface_harq_nr* mac = nullptr;
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srsran::dl_harq_cfg_nr_t cfg = {};
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std::array<std::unique_ptr<dl_harq_process_nr>, SRSRAN_MAX_HARQ_PROC_DL_NR> harq_procs;
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dl_harq_process_nr bcch_proc;
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demux_interface_harq_nr* demux_unit = nullptr;
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srslog::basic_logger& logger;
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uint16_t last_temporal_crnti = SRSRAN_INVALID_RNTI;
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float average_retx = 0.0;
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uint64_t nof_pkts = 0;
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uint8_t cc_idx = 0;
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pthread_rwlock_t rwlock;
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};
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typedef std::unique_ptr<dl_harq_entity_nr> dl_harq_entity_nr_ptr;
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typedef std::array<dl_harq_entity_nr_ptr, SRSRAN_MAX_CARRIERS> dl_harq_entity_nr_vector;
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} // namespace srsue
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#endif // SRSLTE_DL_HARQ_NR_H
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