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Use gNB-DU config update/CellStatus in stack

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Use the gNB-DU configuration update to signal the cell status in the
stack. At the DU, modify the code to always send this message --
previously, we only sent this message if a SIB1 update was necessary,
but now it's always, only including SIB1 updates if necessary.

At the CU, as we don't really have a use as of now, print the
information, but don't do anything with it.
This commit is contained in:
Robert Schmidt
2025-05-02 16:49:29 +02:00
parent f33c6cd0da
commit ae6ea60a7a
3 changed files with 28 additions and 8 deletions
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openair2/LAYER2/NR_MAC_gNB/config.c
+10 -4
View File
@@ -950,11 +950,17 @@ void prepare_du_configuration_update(gNB_MAC_INST *mac,
/* send gNB-DU configuration update to RRC */
f1ap_gnb_du_configuration_update_t update = {
.transaction_id = 1,
.num_cells_to_modify = 1,
.num_status = 1,
.status[0].plmn = info->plmn,
.status[0].nr_cellid = info->nr_cellid,
.status[0].service_state = F1AP_STATE_IN_SERVICE,
};
update.cell_to_modify[0].old_nr_cellid = info->nr_cellid;
update.cell_to_modify[0].info = *info;
update.cell_to_modify[0].sys_info = get_sys_info(mib, sib1, NULL);
if (mib && sib1) {
update.num_cells_to_modify = 1,
update.cell_to_modify[0].old_nr_cellid = info->nr_cellid;
update.cell_to_modify[0].info = *info;
update.cell_to_modify[0].sys_info = get_sys_info(mib, sib1, NULL);
}
mac->mac_rrc.gnb_du_configuration_update(&update);
}
openair2/LAYER2/NR_MAC_gNB/mac_rrc_dl_handler.c
+11 -4
View File
@@ -167,18 +167,25 @@ void f1_setup_response(const f1ap_setup_resp_t *resp)
// we can configure other SIB only after having received the ones generated by CU
bool update = nr_mac_configure_other_sib(mac, cu_cell->num_SI, cu_cell->SI_msg);
/* only if we have to update SIB1, set mib and sib1 to non-NULL to indicate
* in du_config_update that it has changed (otherwise, gNB-DU config update
* indicates only cell status */
NR_BCCH_BCH_Message_t *mib = NULL;
NR_BCCH_DL_SCH_Message_t *sib1 = NULL;
if (update) {
f1ap_setup_req_t *sr = mac->f1_config.setup_req;
DevAssert(sr->num_cells_available == 1);
f1ap_served_cell_info_t *info = &sr->cell[0].info;
NR_COMMON_channels_t *cc = &mac->common_channels[0];
prepare_du_configuration_update(mac, info, cc->mib, cc->sib1);
mib = cc->mib;
sib1 = cc->sib1;
}
mac->f1_config.setup_resp = malloc(sizeof(*mac->f1_config.setup_resp));
AssertFatal(mac->f1_config.setup_resp != NULL, "out of memory\n");
// Copy F1AP message
*mac->f1_config.setup_resp = cp_f1ap_setup_response(resp);
f1ap_setup_req_t *sr = mac->f1_config.setup_req;
DevAssert(sr->num_cells_available == 1);
prepare_du_configuration_update(mac, &sr->cell[0].info, mib, sib1);
NR_SCHED_UNLOCK(&mac->sched_lock);
// NOTE: Before accepting any UEs, we should initialize the UE states.
openair2/RRC/NR/rrc_gNB_du.c
+7
View File
@@ -556,6 +556,13 @@ void rrc_gNB_process_f1_du_configuration_update(f1ap_gnb_du_configuration_update
LOG_W(RRC, "du_configuration_update->cells_to_delete_list is not supported yet");
}
for (int i = 0; i < conf_up->num_status; ++i) {
const f1ap_cell_status_t *cs = &conf_up->status[i];
const char *status = cs->service_state == F1AP_STATE_IN_SERVICE ? "in service" : "out of service";
const plmn_id_t *p = &cs->plmn;
LOG_I(NR_RRC, "cell PLMN %03d.%0*d Cell ID %ld is %s\n", p->mcc, p->mnc_digit_length, p->mnc, cs->nr_cellid, status);
}
/* Send DU Configuration Acknowledgement */
f1ap_gnb_du_configuration_update_acknowledge_t ack = {.transaction_id = conf_up->transaction_id};
rrc->mac_rrc.gnb_du_configuration_update_acknowledge(assoc_id, &ack);