/** * * \section COPYRIGHT * * Copyright 2013-2020 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 SRSLTE_RRC_UE_H #define SRSLTE_RRC_UE_H #include "mac_controller.h" #include "rrc.h" namespace srsenb { class rrc::ue { public: class rrc_mobility; ue(rrc* outer_rrc, uint16_t rnti, const sched_interface::ue_cfg_t& ue_cfg); ~ue(); int init(); bool is_connected(); bool is_idle(); typedef enum { MSG3_RX_TIMEOUT = 0, ///< Msg3 has its own timeout to quickly remove fake UEs from random PRACHs UE_INACTIVITY_TIMEOUT, ///< UE inactivity timeout nulltype } activity_timeout_type_t; std::string to_string(const activity_timeout_type_t& type); void set_activity_timeout(const activity_timeout_type_t type); void set_activity(); void activity_timer_expired(); rrc_state_t get_state(); void get_metrics(rrc_ue_metrics_t& ue_metrics) const; void send_connection_setup(); void send_connection_reest(uint8_t ncc); void send_connection_reject(); void send_connection_release(); void send_connection_reest_rej(); void send_connection_reconf(srslte::unique_byte_buffer_t sdu = {}, bool phy_cfg_updated = true, const asn1::unbounded_octstring* nas_pdu = nullptr); void send_security_mode_command(); void send_ue_cap_enquiry(); void send_ue_info_req(); void parse_ul_dcch(uint32_t lcid, srslte::unique_byte_buffer_t pdu); void handle_rrc_con_req(asn1::rrc::rrc_conn_request_s* msg); void handle_rrc_con_setup_complete(asn1::rrc::rrc_conn_setup_complete_s* msg, srslte::unique_byte_buffer_t pdu); void handle_rrc_con_reest_req(asn1::rrc::rrc_conn_reest_request_s* msg); void handle_rrc_con_reest_complete(asn1::rrc::rrc_conn_reest_complete_s* msg, srslte::unique_byte_buffer_t pdu); void handle_rrc_reconf_complete(asn1::rrc::rrc_conn_recfg_complete_s* msg, srslte::unique_byte_buffer_t pdu); void handle_security_mode_complete(asn1::rrc::security_mode_complete_s* msg); void handle_security_mode_failure(asn1::rrc::security_mode_fail_s* msg); bool handle_ue_cap_info(asn1::rrc::ue_cap_info_s* msg); void handle_ue_init_ctxt_setup_req(const asn1::s1ap::init_context_setup_request_s& msg); bool handle_ue_ctxt_mod_req(const asn1::s1ap::ue_context_mod_request_s& msg); void handle_ue_info_resp(const asn1::rrc::ue_info_resp_r9_s& msg); void set_bitrates(const asn1::s1ap::ue_aggregate_maximum_bitrate_s& rates); bool setup_erabs(const asn1::s1ap::erab_to_be_setup_list_ctxt_su_req_l& e); bool setup_erabs(const asn1::s1ap::erab_to_be_setup_list_bearer_su_req_l& e); bool release_erabs(); bool release_erab(uint32_t erab_id); bool modify_erab(uint16_t erab_id, const asn1::s1ap::erab_level_qos_params_s& qos_params, const asn1::unbounded_octstring* nas_pdu); void notify_s1ap_ue_ctxt_setup_complete(); void notify_s1ap_ue_erab_setup_response(const asn1::s1ap::erab_to_be_setup_list_bearer_su_req_l& e); // Getters for PUCCH resources int get_cqi(uint16_t* pmi_idx, uint16_t* n_pucch, uint32_t ue_cc_idx); int get_ri(uint32_t m_ri, uint16_t* ri_idx); bool is_allocated() const; void send_dl_ccch(asn1::rrc::dl_ccch_msg_s* dl_ccch_msg); bool send_dl_dcch(const asn1::rrc::dl_dcch_msg_s* dl_dcch_msg, srslte::unique_byte_buffer_t pdu = srslte::unique_byte_buffer_t()); uint16_t rnti = 0; rrc* parent = nullptr; bool connect_notified = false; std::unique_ptr mobility_handler; bool is_csfb = false; void* operator new(size_t sz); void* operator new[](size_t sz) = delete; void operator delete(void* ptr)noexcept; void operator delete[](void* ptr) = delete; private: // args srslte::byte_buffer_pool* pool = nullptr; srslte::timer_handler::unique_timer activity_timer; /// cached ASN1 fields for RRC config update checking, and ease of context transfer during HO ue_var_cfg_t current_ue_cfg; asn1::rrc::establishment_cause_e establishment_cause; // S-TMSI for this UE bool has_tmsi = false; uint32_t m_tmsi = 0; uint8_t mmec = 0; // state uint32_t rlf_cnt = 0; uint8_t transaction_id = 0; rrc_state_t state = RRC_STATE_IDLE; uint16_t old_reest_rnti = SRSLTE_INVALID_RNTI; std::map old_reest_pdcp_state = {}; bool rlf_info_pending = false; asn1::s1ap::ue_aggregate_maximum_bitrate_s bitrates; bool eutra_capabilities_unpacked = false; asn1::rrc::ue_eutra_cap_s eutra_capabilities; srslte::rrc_ue_capabilities_t ue_capabilities; const static uint32_t UE_PCELL_CC_IDX = 0; ue_cell_ded_list ue_cell_list; bearer_cfg_handler bearer_list; security_cfg_handler ue_security_cfg; // controllers mac_controller mac_ctrl; ///< Helper to access a cell cfg based on ue_cc_idx enb_cell_common* get_ue_cc_cfg(uint32_t ue_cc_idx); /// Helper to fill cell_ded_list with SCells provided in the eNB config void update_scells(); ///< UE's Physical layer dedicated configuration phy_interface_rrc_lte::phy_rrc_cfg_list_t phy_rrc_dedicated_list = {}; /** * Setups the PCell physical layer common configuration of the UE from the SIB2 message. This methods is designed to * be called from the constructor. * * @param config ASN1 Common SIB struct carrying the common physical layer parameters */ void apply_setup_phy_common(const asn1::rrc::rr_cfg_common_sib_s& config, bool update_phy); /** * Setups the PCell physical layer dedicated configuration of the UE. This method shall be called from the * connection setup only. * * @param phys_cfg_ded ASN1 Physical layer configuration dedicated */ void apply_setup_phy_config_dedicated(const asn1::rrc::phys_cfg_ded_s& phys_cfg_ded); /** * Reconfigures the PCell and SCell physical layer dedicated configuration of the UE. This method shall be called * from the connection reconfiguration. `apply_setup_phy_config` shall not be called before/after. It automatically * parses the PCell and SCell reconfiguration. * * @param reconfig_r8 ASN1 reconfiguration message */ void apply_reconf_phy_config(const asn1::rrc::rrc_conn_recfg_r8_ies_s& reconfig_r8, bool update_phy); /** * Reconfigures PDCP bearers * @param srbs_to_add SRBs to add */ void apply_pdcp_srb_updates(const asn1::rrc::rr_cfg_ded_s& pending_rr_cfg); void apply_pdcp_drb_updates(const asn1::rrc::rr_cfg_ded_s& pending_rr_cfg); void apply_rlc_rb_updates(const asn1::rrc::rr_cfg_ded_s& pending_rr_cfg); }; // class ue } // namespace srsenb #endif // SRSLTE_RRC_UE_H