mirror of https://github.com/PentHertz/srsLTE.git
133 lines
4.3 KiB
C++
133 lines
4.3 KiB
C++
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSRAN_MAC_RAR_PDU_NR_H
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#define SRSRAN_MAC_RAR_PDU_NR_H
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#include "srsran/common/byte_buffer.h"
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#include "srsran/common/common.h"
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#include "srsran/config.h"
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#include "srsran/phy/common/phy_common_nr.h"
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#include "srsran/srslog/srslog.h"
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#include <memory>
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#include <stdint.h>
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#include <vector>
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namespace srsran {
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class mac_rar_pdu_nr;
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// 3GPP 38.321 v15.3.0 Sec 6.1.5
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class mac_rar_subpdu_nr
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{
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public:
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// Possible types of RAR subpdus (same like EUTRA)
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typedef enum { BACKOFF = 0, RAPID } rar_subh_type_t;
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mac_rar_subpdu_nr(mac_rar_pdu_nr* parent_);
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// RAR content length in bits (38.321 Sec 6.2.3)
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static const uint32_t UL_GRANT_NBITS = SRSRAN_RAR_UL_GRANT_NBITS;
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static const uint32_t TA_COMMAND_NBITS = 12;
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// getter
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bool read_subpdu(const uint8_t* ptr);
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bool has_more_subpdus();
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uint32_t get_total_length();
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bool has_rapid() const;
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uint8_t get_rapid() const;
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uint16_t get_temp_crnti() const;
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uint32_t get_ta() const;
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std::array<uint8_t, UL_GRANT_NBITS> get_ul_grant() const;
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bool has_backoff() const;
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uint8_t get_backoff() const;
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// setter
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void write_subpdu(const uint8_t* start_);
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void set_backoff(const uint8_t backoff_indicator_);
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void set_ta(const uint32_t ta_);
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void set_temp_crnti(const uint16_t temp_crnti_);
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void set_rapid(const uint8_t rapid_);
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void set_ul_grant(std::array<uint8_t, mac_rar_subpdu_nr::UL_GRANT_NBITS> ul_grant_);
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void set_is_last_subpdu();
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void to_string(fmt::memory_buffer& buffer);
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private:
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const uint32_t MAC_RAR_NBYTES = 7; // see TS 38.321 Sec 6.2.3
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int header_length = 1; // RAR PDU subheader is always 1 B
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int payload_length = 0; // only used if MAC RAR is included
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std::array<uint8_t, UL_GRANT_NBITS> ul_grant = {};
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uint16_t ta = 0; // 12bit TA
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uint16_t temp_crnti = 0;
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uint16_t rapid = 0;
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uint8_t backoff_indicator = 0;
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rar_subh_type_t type = BACKOFF;
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bool E_bit = true;
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srslog::basic_logger& logger;
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mac_rar_pdu_nr* parent = nullptr;
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};
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class mac_rar_pdu_nr
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{
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public:
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mac_rar_pdu_nr();
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~mac_rar_pdu_nr() = default;
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int init_tx(byte_buffer_t* buffer_, uint32_t pdu_len_);
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int pack();
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bool unpack(const uint8_t* payload, const uint32_t& len);
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uint32_t get_num_subpdus();
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// Returns reference to a single subPDU
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const mac_rar_subpdu_nr& get_subpdu(const uint32_t& index);
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// Returns reference to all subPDUs
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const std::vector<mac_rar_subpdu_nr>& get_subpdus();
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uint32_t get_remaining_len();
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void set_si_rapid(uint16_t si_rapid_); // configured through SIB1 for on-demand SI request (See 38.331 Sec 5.2.1)
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bool has_si_rapid();
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// returns reference to added RAR subPDU
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mac_rar_subpdu_nr& add_subpdu();
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void to_string(fmt::memory_buffer& buffer);
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private:
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std::vector<mac_rar_subpdu_nr> subpdus;
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uint32_t pdu_len = 0;
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uint32_t remaining_len = 0;
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uint16_t si_rapid = 0;
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bool si_rapid_set = false;
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byte_buffer_t* buffer = nullptr;
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srslog::basic_logger& logger;
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};
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} // namespace srsran
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#endif // SRSRAN_MAC_RAR_PDU_NR_H
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