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C++

/**
* Copyright 2013-2023 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsRAN is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#ifndef SRSENB_UE_NR_H
#define SRSENB_UE_NR_H
#include "srsenb/hdr/stack/mac/common/mac_metrics.h"
#include "srsgnb/hdr/stack/mac/sched_nr_interface.h"
#include "srsran/common/block_queue.h"
#include "srsran/common/interfaces_common.h"
#include "srsran/interfaces/enb_rlc_interfaces.h"
#include "srsran/mac/bsr_nr.h"
#include "srsran/mac/mac_sch_pdu_nr.h"
#include <mutex>
#include <vector>
namespace srsenb {
class rrc_interface_mac_nr;
class rlc_interface_mac_nr;
class phy_interface_stack_nr;
class ue_nr : public srsran::read_pdu_interface
{
public:
ue_nr(uint16_t rnti,
uint32_t enb_cc_idx,
sched_nr_interface* sched_,
rrc_interface_mac_nr* rrc_,
rlc_interface_mac* rlc,
phy_interface_stack_nr* phy_,
srslog::basic_logger& logger);
virtual ~ue_nr();
void reset();
void ue_cfg(const sched_nr_interface::ue_cfg_t& ue_cfg);
void set_tti(uint32_t tti);
uint16_t get_rnti() const { return rnti; }
void set_active(bool active) { active_state.store(active, std::memory_order_relaxed); }
bool is_active() const { return active_state.load(std::memory_order_relaxed); }
void store_msg3(srsran::unique_byte_buffer_t pdu);
int generate_pdu(srsran::byte_buffer_t* pdu, uint32_t grant_size, srsran::const_span<uint32_t> subpdu_lcids);
std::mutex metrics_mutex = {};
void metrics_read(mac_ue_metrics_t* metrics_);
void metrics_rx(bool crc, uint32_t tbs);
void metrics_tx(bool crc, uint32_t tbs);
void metrics_phr(float phr);
void metrics_dl_ri(uint32_t dl_cqi);
void metrics_dl_pmi(uint32_t dl_cqi);
void metrics_dl_cqi(const srsran_uci_cfg_nr_t& cfg_, uint32_t dl_cqi);
void metrics_dl_mcs(uint32_t mcs);
void metrics_ul_mcs(uint32_t mcs);
void metrics_pucch_sinr(float sinr);
void metrics_pusch_sinr(float sinr);
void metrics_cnt();
uint32_t read_pdu(uint32_t lcid, uint8_t* payload, uint32_t requested_bytes) final;
private:
rlc_interface_mac* rlc = nullptr;
rrc_interface_mac_nr* rrc = nullptr;
phy_interface_stack_nr* phy = nullptr;
srslog::basic_logger& logger;
sched_nr_interface* sched = nullptr;
uint64_t conres_id = 0;
uint16_t rnti = 0;
uint32_t last_tti = 0;
uint32_t nof_failures = 0;
std::atomic<bool> active_state{true};
// TODO: some counters are kept as members of class ue_nr, while some others (i.e., mcs) are kept in the ue_metrics
// We should make these counters more uniform
uint32_t phr_counter = 0;
uint32_t dl_cqi_valid_counter = 0;
uint32_t dl_ri_counter = 0;
uint32_t dl_pmi_counter = 0;
uint32_t pucch_sinr_counter = 0;
uint32_t pusch_sinr_counter = 0;
mac_ue_metrics_t ue_metrics = {};
// UE-specific buffer for MAC PDU packing, unpacking and handling
srsran::mac_sch_pdu_nr mac_pdu_dl, mac_pdu_ul;
std::vector<srsran::unique_byte_buffer_t> ue_tx_buffer;
srsran::block_queue<srsran::unique_byte_buffer_t>
ue_rx_pdu_queue; ///< currently only DCH PDUs supported (add BCH, PCH, etc)
srsran::unique_byte_buffer_t ue_rlc_buffer;
srsran::unique_byte_buffer_t last_msg3; ///< holds UE ID received in Msg3 for ConRes CE
static constexpr int32_t MIN_RLC_PDU_LEN =
5; ///< minimum bytes that need to be available in a MAC PDU for attempting to add another RLC SDU
// Mutexes
std::mutex mutex;
};
} // namespace srsenb
#endif // SRSENB_UE_NR_H