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srsRAN_4G
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Added ability to reconfigure more than one DRB in the eNB RRC reconfiguration.

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master
Pedro Alvarez 5 years ago committed by Andre Puschmann
parent 9b60d7977e
commit 84b012051c
1 changed files with 57 additions and 32 deletions
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89
srsenb/src/stack/rrc/rrc.cc
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@ -1855,14 +1855,6 @@ void rrc::ue::send_connection_reconf(srslte::unique_byte_buffer_t pdu)
conn_reconf->rr_cfg_ded.srb_to_add_mod_list[0].rlc_cfg_present = true;
conn_reconf->rr_cfg_ded.srb_to_add_mod_list[0].rlc_cfg.set(srb_to_add_mod_s::rlc_cfg_c_::types::default_value);
// Get DRB1 configuration
conn_reconf->rr_cfg_ded.drb_to_add_mod_list_present = true;
conn_reconf->rr_cfg_ded.drb_to_add_mod_list.resize(1);
if (get_drbid_config(&conn_reconf->rr_cfg_ded.drb_to_add_mod_list[0], 1)) {
parent->rrc_log->error("Getting DRB1 configuration\n");
parent->rrc_log->console("The QCI %d for DRB1 is invalid or not configured.\n", erabs[5].qos_params.qci);
return;
}
// Configure SRB2 in RLC and PDCP
parent->rlc->add_bearer(rnti, 2, srslte::rlc_config_t::srb_config(2));
@ -1873,36 +1865,69 @@ void rrc::ue::send_connection_reconf(srslte::unique_byte_buffer_t pdu)
parent->pdcp->enable_integrity(rnti, 2);
parent->pdcp->enable_encryption(rnti, 2);
// Configure DRB1 in RLC
parent->rlc->add_bearer(rnti, 3, srslte::make_rlc_config_t(conn_reconf->rr_cfg_ded.drb_to_add_mod_list[0].rlc_cfg));
// Add DRB Add/Mod list
conn_reconf->rr_cfg_ded.drb_to_add_mod_list_present = true;
conn_reconf->rr_cfg_ded.drb_to_add_mod_list.resize(erabs.size());
// Configure DRB1 in PDCP
srslte::pdcp_config_t pdcp_cnfg_drb = srslte::make_drb_pdcp_config_t(1, false);
if (conn_reconf->rr_cfg_ded.drb_to_add_mod_list[0].pdcp_cfg.rlc_um_present) {
if (conn_reconf->rr_cfg_ded.drb_to_add_mod_list[0].pdcp_cfg.rlc_um.pdcp_sn_size.value ==
pdcp_cfg_s::rlc_um_s_::pdcp_sn_size_e_::len7bits) {
pdcp_cnfg_drb.sn_len = srslte::PDCP_SN_LEN_7;
// Add space for NAS messages
uint8_t n_nas = 0;
for (bool pending : nas_pending) {
if (pending) {
n_nas++;
}
}
parent->pdcp->add_bearer(rnti, 3, pdcp_cnfg_drb);
parent->pdcp->config_security(rnti, 3, sec_cfg);
parent->pdcp->enable_integrity(rnti, 3);
parent->pdcp->enable_encryption(rnti, 3);
// DRB1 has already been configured in GTPU through bearer setup
// Add E-RAB info message for E-RAB 5 (DRB1)
if (nas_pending[5]) {
parent->rrc_log->info_hex(
erab_info[5]->msg, erab_info[5]->N_bytes, "connection_reconf erab_info -> nas_info rnti 0x%x\n", rnti);
if (n_nas > 0) {
conn_reconf->ded_info_nas_list_present = true;
conn_reconf->ded_info_nas_list.resize(1);
conn_reconf->ded_info_nas_list[0].resize(erab_info[5]->N_bytes);
memcpy(conn_reconf->ded_info_nas_list[0].data(), erab_info[5]->msg, erab_info[5]->N_bytes);
} else {
parent->rrc_log->debug("Not adding NAS message to connection reconfiguration\n");
conn_reconf->ded_info_nas_list.resize(0);
conn_reconf->ded_info_nas_list.resize(n_nas);
}
// Configure all DRBs
uint8_t vec_idx = 0;
for (const std::pair<uint8_t, erab_t>& erab_id_pair : erabs) {
const erab_t& erab = erab_id_pair.second;
parent->rrc_log->console("%d\n", erab.id);
uint8_t drb_id = erab.id - 4;
uint8_t lcid = erab.id - 2;
// Get DRB1 configuration
if (get_drbid_config(&conn_reconf->rr_cfg_ded.drb_to_add_mod_list[drb_id - 1], drb_id)) {
parent->rrc_log->error("Getting DRB1 configuration\n");
parent->rrc_log->console("The QCI %d for DRB1 is invalid or not configured.\n", erab.qos_params.qci);
return;
}
// Configure DRBs in RLC
parent->rlc->add_bearer(
rnti, lcid, srslte::make_rlc_config_t(conn_reconf->rr_cfg_ded.drb_to_add_mod_list[vec_idx].rlc_cfg));
// Configure DRB1 in PDCP
srslte::pdcp_config_t pdcp_cnfg_drb = srslte::make_drb_pdcp_config_t(drb_id, false);
if (conn_reconf->rr_cfg_ded.drb_to_add_mod_list[vec_idx].pdcp_cfg.rlc_um_present) {
if (conn_reconf->rr_cfg_ded.drb_to_add_mod_list[vec_idx].pdcp_cfg.rlc_um.pdcp_sn_size.value ==
pdcp_cfg_s::rlc_um_s_::pdcp_sn_size_e_::len7bits) {
pdcp_cnfg_drb.sn_len = srslte::PDCP_SN_LEN_7;
}
}
parent->pdcp->add_bearer(rnti, lcid, pdcp_cnfg_drb);
parent->pdcp->config_security(rnti, lcid, sec_cfg);
parent->pdcp->enable_integrity(rnti, lcid);
parent->pdcp->enable_encryption(rnti, lcid);
// DRBs have already been configured in GTPU through bearer setup
// Add E-RAB info message for E-RAB 5 (DRB1)
if (nas_pending[erab.id]) {
parent->rrc_log->info_hex(
erab_info[erab.id]->msg, erab_info[erab.id]->N_bytes, "connection_reconf erab_info -> nas_info rnti 0x%x\n", rnti);
conn_reconf->ded_info_nas_list[vec_idx].resize(erab_info[erab.id]->N_bytes);
memcpy(conn_reconf->ded_info_nas_list[vec_idx].data(), erab_info[erab.id]->msg, erab_info[erab.id]->N_bytes);
} else {
parent->rrc_log->debug("Not adding NAS message to connection reconfiguration. E-RAB id %d\n", erab.id);
}
vec_idx++;
}
if (mobility_handler != nullptr) {
mobility_handler->fill_conn_recfg_msg(conn_reconf);
}

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