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C++

/*
* Copyright 2013-2020 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE 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.
*
* srsLTE 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 SRSUE_UL_HARQ_H
#define SRSUE_UL_HARQ_H
#include "mux.h"
#include "proc_ra.h"
#include "srslte/common/interfaces_common.h"
#include "srslte/common/log.h"
#include "srslte/common/mac_pcap.h"
#include "srslte/common/timers.h"
#include "srslte/interfaces/ue_interfaces.h"
#include "ul_sps.h"
using namespace srslte;
namespace srsue {
class ul_harq_entity
{
public:
ul_harq_entity(const uint8_t cc_idx_);
bool init(srslte::log_ref log_h_, mac_interface_rrc_common::ue_rnti_t* rntis_, ra_proc* ra_proc_h_, mux* mux_unit_);
void reset();
void reset_ndi();
void set_config(srslte::ul_harq_cfg_t& harq_cfg);
void start_pcap(srslte::mac_pcap* pcap_);
/***************** PHY->MAC interface for UL processes **************************/
void new_grant_ul(mac_interface_phy_lte::mac_grant_ul_t grant, mac_interface_phy_lte::tb_action_ul_t* action);
int get_current_tbs(uint32_t pid);
float get_average_retx();
private:
class ul_harq_process
{
public:
ul_harq_process();
~ul_harq_process();
bool init(uint32_t pid_, ul_harq_entity* parent);
void reset();
void reset_ndi();
uint32_t get_rv();
bool has_grant();
bool get_ndi();
bool is_sps();
uint32_t get_nof_retx();
int get_current_tbs();
// Implements Section 5.4.2.1
void new_grant_ul(mac_interface_phy_lte::mac_grant_ul_t grant, mac_interface_phy_lte::tb_action_ul_t* action);
private:
mac_interface_phy_lte::mac_grant_ul_t cur_grant;
uint32_t pid;
uint32_t current_tx_nb;
uint32_t current_irv;
bool harq_feedback;
bool is_grant_configured;
bool is_initiated;
srslte::log_ref log_h;
ul_harq_entity* harq_entity;
srslte_softbuffer_tx_t softbuffer;
const static int payload_buffer_len = 128 * 1024;
std::unique_ptr<byte_buffer_t> payload_buffer = nullptr;
uint8_t* pdu_ptr;
void generate_tx(mac_interface_phy_lte::tb_action_ul_t* action);
void generate_retx(mac_interface_phy_lte::mac_grant_ul_t grant, mac_interface_phy_lte::tb_action_ul_t* action);
void generate_new_tx(mac_interface_phy_lte::mac_grant_ul_t grant, mac_interface_phy_lte::tb_action_ul_t* action);
};
ul_sps ul_sps_assig;
std::vector<ul_harq_process> proc;
mux* mux_unit = nullptr;
srslte::mac_pcap* pcap = nullptr;
srslte::log_ref log_h;
mac_interface_rrc_common::ue_rnti_t* rntis = nullptr;
srslte::ul_harq_cfg_t harq_cfg = {};
float average_retx = 0.0;
uint64_t nof_pkts = 0;
ra_proc* ra_procedure = nullptr;
uint8_t cc_idx = 0;
};
typedef std::unique_ptr<ul_harq_entity> ul_harq_entity_ptr;
typedef std::vector<ul_harq_entity_ptr> ul_harq_entity_vector;
} // namespace srsue
#endif // SRSUE_UL_HARQ_H