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C++

/**
*
* \section COPYRIGHT
*
* Copyright 2013-2021 Software Radio Systems Limited
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the distribution.
*
*/
#ifndef SRSRAN_SCHED_NR_UE_H
#define SRSRAN_SCHED_NR_UE_H
#include "sched_nr_cfg.h"
#include "sched_nr_harq.h"
#include "sched_nr_interface.h"
#include "srsenb/hdr/stack/mac/common/mac_metrics.h"
#include "srsenb/hdr/stack/mac/common/ue_buffer_manager.h"
#include "srsran/adt/circular_map.h"
#include "srsran/adt/move_callback.h"
#include "srsran/adt/pool/cached_alloc.h"
namespace srsenb {
namespace sched_nr_impl {
class slot_ue;
class ue_carrier
{
public:
ue_carrier(uint16_t rnti, const ue_cfg_t& cfg, const cell_params_t& cell_params_);
void set_cfg(const ue_cfg_t& ue_cfg);
const ue_carrier_params_t& cfg() const { return bwp_cfg; }
int dl_ack_info(uint32_t pid, uint32_t tb_idx, bool ack);
int ul_crc_info(uint32_t pid, bool crc);
const uint16_t rnti;
const uint32_t cc;
const cell_params_t& cell_params;
// Channel state
uint32_t dl_cqi = 1;
uint32_t ul_cqi = 0;
harq_entity harq_ent;
// metrics
mac_ue_metrics_t metrics = {};
private:
friend class slot_ue;
srslog::basic_logger& logger;
ue_carrier_params_t bwp_cfg;
};
class ue
{
public:
ue(uint16_t rnti, const ue_cfg_t& cfg, const sched_params_t& sched_cfg_);
void new_slot(slot_point pdcch_slot);
slot_ue make_slot_ue(slot_point pdcch_slot, uint32_t cc);
void set_cfg(const ue_cfg_t& cfg);
const ue_cfg_t& cfg() const { return ue_cfg; }
/// UE state feedback
void rlc_buffer_state(uint32_t lcid, uint32_t newtx, uint32_t retx) { buffers.dl_buffer_state(lcid, newtx, retx); }
void ul_bsr(uint32_t lcg, uint32_t bsr_val) { buffers.ul_bsr(lcg, bsr_val); }
void ul_sr_info() { last_sr_slot = last_pdcch_slot - TX_ENB_DELAY; }
bool has_ca() const
{
return ue_cfg.carriers.size() > 1 and std::count_if(ue_cfg.carriers.begin() + 1,
ue_cfg.carriers.end(),
[](const ue_cc_cfg_t& cc) { return cc.active; }) > 0;
}
uint32_t pcell_cc() const { return ue_cfg.carriers[0].cc; }
ue_buffer_manager<true> buffers;
std::array<std::unique_ptr<ue_carrier>, SCHED_NR_MAX_CARRIERS> carriers;
const uint16_t rnti;
private:
const sched_params_t& sched_cfg;
slot_point last_pdcch_slot;
slot_point last_sr_slot;
int ul_pending_bytes = 0, dl_pending_bytes = 0;
ue_cfg_t ue_cfg;
};
class slot_ue
{
public:
slot_ue() = default;
explicit slot_ue(ue_carrier& ue, slot_point slot_tx_, uint32_t dl_pending_bytes, uint32_t ul_pending_bytes);
slot_ue(slot_ue&&) noexcept = default;
slot_ue& operator=(slot_ue&&) noexcept = default;
bool empty() const { return ue == nullptr; }
void release() { ue = nullptr; }
const ue_carrier_params_t& cfg() const { return ue->bwp_cfg; }
const ue_carrier_params_t& operator*() const { return ue->bwp_cfg; }
const ue_carrier_params_t* operator->() const { return &ue->bwp_cfg; }
// mutable interface to ue_carrier state
dl_harq_proc* find_empty_dl_harq() { return ue->harq_ent.find_empty_dl_harq(); }
ul_harq_proc* find_empty_ul_harq() { return ue->harq_ent.find_empty_ul_harq(); }
// UE parameters common to all sectors
uint32_t dl_pending_bytes = 0, ul_pending_bytes = 0;
// UE parameters that are sector specific
bool dl_active;
bool ul_active;
slot_point pdcch_slot;
slot_point pdsch_slot;
slot_point pusch_slot;
slot_point uci_slot;
dl_harq_proc* h_dl = nullptr;
ul_harq_proc* h_ul = nullptr;
private:
ue_carrier* ue = nullptr;
};
using ue_map_t = rnti_map_t<std::unique_ptr<ue> >;
using slot_ue_map_t = rnti_map_t<slot_ue>;
} // namespace sched_nr_impl
} // namespace srsenb
#endif // SRSRAN_SCHED_NR_UE_H