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@ -93,9 +93,7 @@ void rrc::init(phy_interface_rrc *phy_,
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pthread_mutex_init(&mutex, NULL);
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ue_category = SRSLTE_UE_CATEGORY;
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t300 = mac_timers->timer_get_unique_id();
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t301 = mac_timers->timer_get_unique_id();
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t302 = mac_timers->timer_get_unique_id();
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t310 = mac_timers->timer_get_unique_id();
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t311 = mac_timers->timer_get_unique_id();
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@ -540,20 +538,14 @@ void rrc::max_retx_attempted() {
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}
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void rrc::timer_expired(uint32_t timeout_id) {
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if (timeout_id == t300) {
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rrc_log->info("Timer T300 expired: ConnectionRequest timeout\n");
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timer_t300_expiry();
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} else if (timeout_id == t301) {
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rrc_log->info("Timer T301 expired: ConnectionReestablishmentRequest timeout\n");
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state = RRC_STATE_LEAVE_CONNECTED;
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} else if (timeout_id == t302) {
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rrc_log->info("Timer T302 expired: ConnectionReject Wait time expired\n");
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timer_barring_expiry(timeout_id);
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} else if (timeout_id == t310) {
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if (timeout_id == t310) {
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rrc_log->info("Timer T310 expired: Radio Link Failure\n");
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radio_link_failure();
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} else if (timeout_id == t311) {
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rrc_log->info("Timer T311 expired: Start of Reestablishment procedure timeout\n");
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rrc_log->info("Timer T311 expired: Going to RRC IDLE\n");
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state = RRC_STATE_LEAVE_CONNECTED;
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} else if (timeout_id == t301) {
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rrc_log->info("Timer T301 expired: Going to RRC IDLE\n");
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state = RRC_STATE_LEAVE_CONNECTED;
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} else {
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rrc_log->error("Timeout from unknown timer id %d\n", timeout_id);
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@ -616,10 +608,6 @@ void rrc::send_con_request() {
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mac->set_contention_id(uecri);
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// Start t300 timer
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mac_timers->timer_get(t300)->reset();
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mac_timers->timer_get(t300)->run();
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rrc_log->info("Sending RRC Connection Request on SRB0\n");
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pdcp->write_sdu(RB_ID_SRB0, pdcp_buf);
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}
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@ -762,6 +750,7 @@ void rrc::send_con_setup_complete(byte_buffer_t *nas_msg) {
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pdcp_buf->N_bytes = bit_buf.N_bits / 8;
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pdcp_buf->set_timestamp();
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state = RRC_STATE_CONNECTED;
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rrc_log->console("RRC Connected\n");
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rrc_log->info("Sending RRC Connection Setup Complete\n");
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pdcp->write_sdu(RB_ID_SRB1, pdcp_buf);
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@ -875,18 +864,6 @@ void rrc::rrc_connection_release() {
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rrc_log->console("Received RRC Connection Release\n");
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}
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// Actions upon expiry of t300 timer 5.3.3.6
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void rrc::timer_t300_expiry() {
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mac->reset();
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set_mac_default();
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nas->notify_connection_failure();
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state = RRC_STATE_IDLE;
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}
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// Actions upon expiry of timers related to cell barring 5.3.3.7
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void rrc::timer_barring_expiry(uint32_t timer_id) {
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nas->network_barring_state(false);
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}
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@ -1105,14 +1082,20 @@ void rrc::parse_dl_ccch(byte_buffer_t *pdu) {
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switch (dl_ccch_msg.msg_type) {
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case LIBLTE_RRC_DL_CCCH_MSG_TYPE_RRC_CON_REJ:
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transaction_id = dl_ccch_msg.msg.rrc_con_setup.rrc_transaction_id;
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handle_con_rej(&dl_ccch_msg.msg.rrc_con_rej);
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rrc_log->info("Connection Reject received. Wait time: %d\n",
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dl_ccch_msg.msg.rrc_con_rej.wait_time);
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state = RRC_STATE_IDLE;
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break;
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case LIBLTE_RRC_DL_CCCH_MSG_TYPE_RRC_CON_SETUP:
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rrc_log->info("Connection Setup received\n");
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transaction_id = dl_ccch_msg.msg.rrc_con_setup.rrc_transaction_id;
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handle_con_setup(&dl_ccch_msg.msg.rrc_con_setup);
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rrc_log->info("Notifying NAS of connection setup\n");
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nas->notify_connection_setup();
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break;
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case LIBLTE_RRC_DL_CCCH_MSG_TYPE_RRC_CON_REEST:
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rrc_log->info("Connection Reestablishment received\n");
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rrc_log->console("Reestablishment OK\n");
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transaction_id = dl_ccch_msg.msg.rrc_con_reest.rrc_transaction_id;
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handle_con_reest(&dl_ccch_msg.msg.rrc_con_reest);
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break;
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@ -1359,11 +1342,9 @@ void rrc::apply_sib2_configs(LIBLTE_RRC_SYS_INFO_BLOCK_TYPE_2_STRUCT *sib2) {
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liblte_rrc_srs_subfr_config_num[sib2->rr_config_common_sib.srs_ul_cnfg.subfr_cnfg],
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sib2->rr_config_common_sib.srs_ul_cnfg.ack_nack_simul_tx ? "yes" : "no");
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mac_timers->timer_get(t300)->set(this, liblte_rrc_t300_num[sib2->ue_timers_and_constants.t300]);
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mac_timers->timer_get(t301)->set(this, liblte_rrc_t301_num[sib2->ue_timers_and_constants.t301]);
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mac_timers->timer_get(t310)->set(this, liblte_rrc_t310_num[sib2->ue_timers_and_constants.t310]);
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mac_timers->timer_get(t311)->set(this, liblte_rrc_t311_num[sib2->ue_timers_and_constants.t311]);
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N310 = liblte_rrc_n310_num[sib2->ue_timers_and_constants.n310];
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N311 = liblte_rrc_n311_num[sib2->ue_timers_and_constants.n311];
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@ -1600,50 +1581,13 @@ void rrc::apply_rr_config_dedicated(LIBLTE_RRC_RR_CONFIG_DEDICATED_STRUCT *cnfg)
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}
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}
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// 5.3.3.4
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void rrc::handle_con_setup(LIBLTE_RRC_CONNECTION_SETUP_STRUCT *setup) {
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rrc_log->info("Connection Setup received\n");
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// Apply the Radio Resource configuration
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apply_rr_config_dedicated(&setup->rr_cnfg);
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// stop timers
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mac_timers->timer_get(t300)->stop();
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// enter RRC CONNECTED
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state = RRC_STATE_CONNECTED;
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rrc_log->info("Notifying NAS of connection setup\n");
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nas->notify_connection_setup();
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}
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// 5.3.3.8
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void rrc::handle_con_rej(LIBLTE_RRC_CONNECTION_REJECT_STRUCT *reject) {
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rrc_log->info("Connection Reject received. Wait time: %d s\n",
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dl_ccch_msg.msg.rrc_con_rej.wait_time);
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rrc_log->console("Received Connection Reject. S1 link may not be active at the eNodeB\n");
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mac_timers->timer_get(t300)->stop();
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mac->reset();
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set_mac_default();
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mac_timers->timer_get(t302)->set(this, dl_ccch_msg.msg.rrc_con_rej.wait_time*1000);
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mac_timers->timer_get(t302)->run();
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nas->notify_connection_failure();
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nas->network_barring_state(true);
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state = RRC_STATE_IDLE;
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}
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/* Reception of RRCConnectionReestablishment by the UE 5.3.7.5 */
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void rrc::handle_con_reest(LIBLTE_RRC_CONNECTION_REESTABLISHMENT_STRUCT *setup) {
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rrc_log->info("Connection Reestablishment received\n");
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rrc_log->console("Reestablishment OK\n");
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mac_timers->timer_get(t301)->stop();
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// TODO: Restablish DRB1. Not done because never was suspended
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