mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
268 lines
11 KiB
C++
268 lines
11 KiB
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 SRSENB_RRC_NR_H
|
|
#define SRSENB_RRC_NR_H
|
|
|
|
#include "rrc_config_common.h"
|
|
#include "rrc_metrics.h"
|
|
#include "srsenb/hdr/stack/enb_stack_base.h"
|
|
#include "srsenb/hdr/stack/rrc/nr/rrc_config_nr.h"
|
|
#include "srsran/asn1/rrc_nr.h"
|
|
#include "srsran/common/block_queue.h"
|
|
#include "srsran/common/buffer_pool.h"
|
|
#include "srsran/common/common.h"
|
|
#include "srsran/common/task_scheduler.h"
|
|
#include "srsran/common/threads.h"
|
|
#include "srsran/common/timeout.h"
|
|
#include "srsran/interfaces/enb_pdcp_interfaces.h"
|
|
#include "srsran/interfaces/enb_rlc_interfaces.h"
|
|
#include "srsran/interfaces/enb_rrc_interfaces.h"
|
|
#include "srsran/interfaces/enb_x2_interfaces.h"
|
|
#include "srsran/interfaces/gnb_interfaces.h"
|
|
#include "srsran/interfaces/gnb_mac_interfaces.h"
|
|
#include "srsran/interfaces/gnb_ngap_interfaces.h"
|
|
#include "srsran/interfaces/gnb_rrc_nr_interfaces.h"
|
|
#include <map>
|
|
#include <queue>
|
|
|
|
namespace srsenb {
|
|
|
|
enum class rrc_nr_state_t { RRC_IDLE, RRC_INACTIVE, RRC_CONNECTED };
|
|
|
|
class rrc_nr final : public rrc_interface_pdcp_nr,
|
|
public rrc_interface_mac_nr,
|
|
public rrc_interface_rlc_nr,
|
|
public rrc_interface_ngap_nr,
|
|
public rrc_nr_interface_rrc
|
|
{
|
|
public:
|
|
explicit rrc_nr(srsran::task_sched_handle task_sched_);
|
|
|
|
int32_t init(const rrc_nr_cfg_t& cfg,
|
|
phy_interface_stack_nr* phy,
|
|
mac_interface_rrc_nr* mac,
|
|
rlc_interface_rrc* rlc,
|
|
pdcp_interface_rrc* pdcp,
|
|
ngap_interface_rrc_nr* ngap_,
|
|
gtpu_interface_rrc_nr* gtpu,
|
|
rrc_eutra_interface_rrc_nr* rrc_eutra_);
|
|
|
|
void stop();
|
|
|
|
void get_metrics(srsenb::rrc_metrics_t& m);
|
|
|
|
rrc_nr_cfg_t update_default_cfg(const rrc_nr_cfg_t& rrc_cfg);
|
|
void config_phy();
|
|
void config_mac();
|
|
int32_t generate_sibs();
|
|
int read_pdu_bcch_bch(const uint32_t tti, srsran::byte_buffer_t& buffer) final;
|
|
int read_pdu_bcch_dlsch(uint32_t sib_index, srsran::byte_buffer_t& buffer) final;
|
|
|
|
/// User manegement
|
|
int add_user(uint16_t rnti, const sched_nr_ue_cfg_t& uecfg);
|
|
void rem_user(uint16_t rnti);
|
|
int update_user(uint16_t new_rnti, uint16_t old_rnti);
|
|
void set_activity_user(uint16_t rnti);
|
|
|
|
// RLC interface
|
|
// TODO
|
|
void read_pdu_pcch(uint8_t* payload, uint32_t payload_size) {}
|
|
void max_retx_attempted(uint16_t rnti) {}
|
|
void protocol_failure(uint16_t rnti) {}
|
|
const char* get_rb_name(uint32_t lcid) { return "invalid"; }
|
|
|
|
// PDCP interface
|
|
void write_pdu(uint16_t rnti, uint32_t lcid, srsran::unique_byte_buffer_t pdu) final;
|
|
void notify_pdcp_integrity_error(uint16_t rnti, uint32_t lcid) final;
|
|
|
|
// Interface for EUTRA RRC
|
|
void sgnb_addition_request(uint16_t rnti, const sgnb_addition_req_params_t& params);
|
|
void sgnb_reconfiguration_complete(uint16_t rnti, const asn1::dyn_octstring& reconfig_response) final;
|
|
void sgnb_release_request(uint16_t nr_rnti) final;
|
|
|
|
// Interfaces for NGAP
|
|
int ue_set_security_cfg_key(uint16_t rnti, const asn1::fixed_bitstring<256, false, true>& key);
|
|
int ue_set_bitrates(uint16_t rnti, const asn1::ngap_nr::ue_aggregate_maximum_bit_rate_s& rates);
|
|
int ue_set_security_cfg_capabilities(uint16_t rnti, const asn1::ngap_nr::ue_security_cap_s& caps);
|
|
int start_security_mode_procedure(uint16_t rnti);
|
|
int establish_rrc_bearer(uint16_t rnti, uint16_t pdu_session_id, srsran::const_byte_span nas_pdu, uint32_t lcid);
|
|
int release_bearers(uint16_t rnti);
|
|
void write_dl_info(uint16_t rnti, srsran::unique_byte_buffer_t sdu);
|
|
int set_aggregate_max_bitrate(uint16_t rnti, const asn1::ngap_nr::ue_aggregate_maximum_bit_rate_s& rates);
|
|
int allocate_lcid(uint16_t rnti);
|
|
|
|
// logging
|
|
typedef enum { Rx = 0, Tx } direction_t;
|
|
template <class T>
|
|
void log_rrc_message(const std::string& source,
|
|
const direction_t dir,
|
|
const asn1::dyn_octstring& oct,
|
|
const T& msg,
|
|
const std::string& msg_type);
|
|
|
|
template <class T>
|
|
void log_rrc_message(const std::string& source,
|
|
const direction_t dir,
|
|
const srsran::byte_buffer_t& pdu,
|
|
const T& msg,
|
|
const std::string& msg_type);
|
|
class ue
|
|
{
|
|
public:
|
|
enum activity_timeout_type_t {
|
|
MSG3_RX_TIMEOUT = 0, ///< Msg3 has its own timeout to quickly remove fake UEs from random PRACHs
|
|
UE_INACTIVITY_TIMEOUT, ///< (currently unused) UE inactivity timeout (usually bigger than reestablishment timeout)
|
|
MSG5_RX_TIMEOUT, ///< (currently unused) for receiving RRCConnectionSetupComplete/RRCReestablishmentComplete
|
|
nulltype
|
|
};
|
|
|
|
/// @param [in] start_msg3_timer: indicates whether the UE is created as part of a RACH process
|
|
ue(rrc_nr* parent_, uint16_t rnti_, const sched_nr_ue_cfg_t& uecfg, bool start_msg3_timer = true);
|
|
|
|
void send_connection_setup();
|
|
void send_dl_ccch(asn1::rrc_nr::dl_ccch_msg_s* dl_dcch_msg);
|
|
|
|
int handle_sgnb_addition_request(uint16_t eutra_rnti, const sgnb_addition_req_params_t& params);
|
|
void crnti_ce_received();
|
|
|
|
// getters
|
|
bool is_connected() { return state == rrc_nr_state_t::RRC_CONNECTED; }
|
|
bool is_idle() { return state == rrc_nr_state_t::RRC_IDLE; }
|
|
bool is_inactive() { return state == rrc_nr_state_t::RRC_INACTIVE; }
|
|
bool is_endc() { return endc; }
|
|
uint16_t get_eutra_rnti() { return eutra_rnti; }
|
|
void get_metrics(rrc_ue_metrics_t& ue_metrics) { ue_metrics = {}; /*TODO fill RRC metrics*/ };
|
|
|
|
// setters
|
|
|
|
int pack_rrc_reconfiguration();
|
|
void deactivate_bearers();
|
|
|
|
/// methods to handle activity timer
|
|
std::string to_string(const activity_timeout_type_t& type);
|
|
void set_activity_timeout(activity_timeout_type_t type);
|
|
void set_activity(bool enabled = true);
|
|
void activity_timer_expired(const activity_timeout_type_t type);
|
|
|
|
private:
|
|
rrc_nr* parent = nullptr;
|
|
uint16_t rnti = SRSRAN_INVALID_RNTI;
|
|
/// for basic DL/UL activity timeout
|
|
srsran::unique_timer activity_timer;
|
|
|
|
int pack_rrc_reconfiguration(asn1::dyn_octstring& packed_rrc_reconfig);
|
|
int pack_secondary_cell_group_cfg(asn1::dyn_octstring& packed_secondary_cell_config);
|
|
|
|
int pack_secondary_cell_group_rlc_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_secondary_cell_group_mac_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_secondary_cell_group_sp_cell_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_sp_cell_cfg_ded(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_sp_cell_cfg_ded_init_dl_bwp(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_sp_cell_cfg_ded_init_dl_bwp_pdsch_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_sp_cell_cfg_ded_init_dl_bwp_radio_link_monitoring(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_sp_cell_cfg_ded_ul_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_sp_cell_cfg_ded_ul_cfg_init_ul_bwp(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_sp_cell_cfg_ded_ul_cfg_init_ul_bwp_pucch_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_sp_cell_cfg_ded_ul_cfg_init_ul_bwp_pusch_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_sp_cell_cfg_ded_pdcch_serving_cell_cfg(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_recfg_with_sync(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_recfg_with_sync_sp_cell_cfg_common(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_recfg_with_sync_sp_cell_cfg_common_dl_cfg_common(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_recfg_with_sync_sp_cell_cfg_common_dl_cfg_common_phy_cell_group_cfg(
|
|
asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_recfg_with_sync_sp_cell_cfg_common_dl_cfg_init_dl_bwp(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_recfg_with_sync_sp_cell_cfg_common_dl_cfg_init_dl_bwp_pdsch_cfg_common(
|
|
asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_recfg_with_sync_sp_cell_cfg_common_ul_cfg_common(asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_recfg_with_sync_sp_cell_cfg_common_ul_cfg_common_init_ul_bwp(
|
|
asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
int pack_recfg_with_sync_sp_cell_cfg_common_ul_cfg_common_init_ul_bwp_pusch_cfg_common(
|
|
asn1::rrc_nr::cell_group_cfg_s& cell_group_cfg_pack);
|
|
|
|
int pack_nr_radio_bearer_config(asn1::dyn_octstring& packed_nr_bearer_config);
|
|
|
|
int add_drb();
|
|
|
|
// logging helpers
|
|
template <class T, class M>
|
|
void log_rrc_message(const direction_t dir, const M& pdu, const T& msg, const std::string& msg_type);
|
|
|
|
// state
|
|
rrc_nr_state_t state = rrc_nr_state_t::RRC_IDLE;
|
|
uint8_t transaction_id = 0;
|
|
|
|
// RRC configs for UEs
|
|
asn1::rrc_nr::cell_group_cfg_s cell_group_cfg;
|
|
asn1::rrc_nr::radio_bearer_cfg_s radio_bearer_cfg;
|
|
|
|
// MAC controller
|
|
sched_nr_interface::ue_cfg_t uecfg{};
|
|
|
|
const uint32_t drb1_lcid = 4;
|
|
|
|
// NSA specific variables
|
|
bool endc = false;
|
|
uint16_t eutra_rnti = SRSRAN_INVALID_RNTI;
|
|
};
|
|
|
|
private:
|
|
static constexpr uint32_t UE_PSCELL_CC_IDX = 0; // first NR cell is always Primary Secondary Cell for UE
|
|
rrc_nr_cfg_t cfg = {};
|
|
|
|
// interfaces
|
|
phy_interface_stack_nr* phy = nullptr;
|
|
mac_interface_rrc_nr* mac = nullptr;
|
|
rlc_interface_rrc* rlc = nullptr;
|
|
pdcp_interface_rrc* pdcp = nullptr;
|
|
gtpu_interface_rrc_nr* gtpu = nullptr;
|
|
ngap_interface_rrc_nr* ngap = nullptr;
|
|
rrc_eutra_interface_rrc_nr* rrc_eutra = nullptr;
|
|
|
|
// args
|
|
srsran::task_sched_handle task_sched;
|
|
|
|
// derived
|
|
uint32_t slot_dur_ms = 0;
|
|
srslog::basic_logger& logger;
|
|
asn1::rrc_nr::sp_cell_cfg_s base_sp_cell_cfg;
|
|
|
|
// vars
|
|
std::map<uint16_t, std::unique_ptr<ue> > users;
|
|
bool running = false;
|
|
std::vector<srsran::unique_byte_buffer_t> sib_buffer;
|
|
srsran::unique_byte_buffer_t mib_buffer = nullptr;
|
|
|
|
uint32_t nof_si_messages = 0;
|
|
|
|
/// Private Methods
|
|
void handle_pdu(uint16_t rnti, uint32_t lcid, srsran::unique_byte_buffer_t pdu);
|
|
/// This gets called by rrc_nr::sgnb_addition_request and WILL NOT TRIGGER the RX MSG3 activity timer
|
|
int add_user(uint16_t rnti, const sched_nr_ue_cfg_t& uecfg, bool start_msg3_timer);
|
|
|
|
// Helper to create PDU from RRC message
|
|
template <class T>
|
|
srsran::unique_byte_buffer_t pack_into_pdu(const T& msg);
|
|
};
|
|
|
|
} // namespace srsenb
|
|
|
|
#endif // SRSENB_RRC_NR_H
|