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Refactor RRC Reconfiguration function

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Refactor the RRC reconfiguration function to reuse it also later for
sending the reconfiguration including the handover trigger.
This commit is contained in:
Robert Schmidt
2024-10-22 18:12:51 +02:00
parent 1783932e37
commit 5378c4d8d9
1 changed files with 57 additions and 44 deletions
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openair2/RRC/NR/rrc_gNB.c
+57 -44
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@@ -481,6 +481,60 @@ static void rrc_gNB_process_RRCSetupComplete(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE
rrc_gNB_send_NGAP_NAS_FIRST_REQ(rrc, UE, rrcSetupComplete);
}
static int rrc_gNB_encode_RRCReconfiguration(gNB_RRC_INST *rrc,
gNB_RRC_UE_t *UE,
uint8_t xid,
struct NR_RRCReconfiguration_v1530_IEs__dedicatedNAS_MessageList *nas_messages,
uint8_t *buf,
int max_len,
bool reestablish)
{
NR_CellGroupConfig_t *cellGroupConfig = UE->masterCellGroup;
nr_rrc_du_container_t *du = get_du_for_ue(rrc, UE->rrc_ue_id);
DevAssert(du != NULL);
f1ap_served_cell_info_t *cell_info = &du->setup_req->cell[0].info;
NR_MeasConfig_t *measconfig = NULL;
if (du->mtc != NULL) {
int scs = get_ssb_scs(cell_info);
int band = get_dl_band(cell_info);
const NR_MeasTimingList_t *mtlist = du->mtc->criticalExtensions.choice.c1->choice.measTimingConf->measTiming;
const NR_MeasTiming_t *mt = mtlist->list.array[0];
const neighbour_cell_configuration_t *neighbour_config = get_neighbour_config(cell_info->nr_cellid);
seq_arr_t *neighbour_cells = NULL;
if (neighbour_config)
neighbour_cells = neighbour_config->neighbour_cells;
measconfig = get_MeasConfig(mt, band, scs, &rrc->measurementConfiguration, neighbour_cells);
}
if (UE->measConfig)
free_MeasConfig(UE->measConfig);
UE->measConfig = measconfig;
NR_SRB_ToAddModList_t *SRBs = createSRBlist(UE, reestablish);
NR_DRB_ToAddModList_t *DRBs = createDRBlist(UE, reestablish);
int size = do_RRCReconfiguration(UE,
buf,
max_len,
xid,
SRBs,
DRBs,
UE->DRB_ReleaseList,
NULL,
measconfig,
nas_messages,
cellGroupConfig);
LOG_DUMPMSG(NR_RRC, DEBUG_RRC, (char *)buf, size, "[MSG] RRC Reconfiguration\n");
freeSRBlist(SRBs);
freeDRBlist(DRBs);
ASN_STRUCT_FREE(asn_DEF_NR_DRB_ToReleaseList, UE->DRB_ReleaseList);
UE->DRB_ReleaseList = NULL;
return size;
}
static void rrc_gNB_generate_dedicatedRRCReconfiguration(gNB_RRC_INST *rrc, gNB_RRC_UE_t *ue_p)
{
uint8_t xid = rrc_gNB_get_next_transaction_identifier(rrc->module_id);
@@ -517,51 +571,10 @@ static void rrc_gNB_generate_dedicatedRRCReconfiguration(gNB_RRC_INST *rrc, gNB_
for (int i = 0; i < ue_p->nb_of_pdusessions; i++)
clear_nas_pdu(&ue_p->pduSession[i].param.nas_pdu);
NR_CellGroupConfig_t *cellGroupConfig = ue_p->masterCellGroup;
const nr_rrc_du_container_t *du = get_du_for_ue(rrc, ue_p->rrc_ue_id);
DevAssert(du != NULL);
f1ap_served_cell_info_t *cell_info = &du->setup_req->cell[0].info;
NR_MeasConfig_t *measconfig = NULL;
if (du->mtc != NULL) {
int scs = get_ssb_scs(cell_info);
int band = get_dl_band(cell_info);
const NR_MeasTimingList_t *mtlist = du->mtc->criticalExtensions.choice.c1->choice.measTimingConf->measTiming;
const NR_MeasTiming_t *mt = mtlist->list.array[0];
const neighbour_cell_configuration_t *neighbour_config = get_neighbour_config(cell_info->nr_cellid);
seq_arr_t *neighbour_cells = NULL;
if (neighbour_config)
neighbour_cells = neighbour_config->neighbour_cells;
measconfig = get_MeasConfig(mt, band, scs, &rrc->measurementConfiguration, neighbour_cells);
}
if (ue_p->measConfig)
free_MeasConfig(ue_p->measConfig);
ue_p->measConfig = measconfig;
uint8_t buffer[NR_RRC_BUF_SIZE] = {0};
NR_SRB_ToAddModList_t *SRBs = createSRBlist(ue_p, false);
NR_DRB_ToAddModList_t *DRBs = createDRBlist(ue_p, false);
int size = do_RRCReconfiguration(ue_p,
buffer,
NR_RRC_BUF_SIZE,
xid,
SRBs,
DRBs,
ue_p->DRB_ReleaseList,
NULL,
measconfig,
dedicatedNAS_MessageList,
cellGroupConfig);
LOG_DUMPMSG(NR_RRC, DEBUG_RRC, (char *)buffer, size, "[MSG] RRC Reconfiguration\n");
freeSRBlist(SRBs);
freeDRBlist(DRBs);
ASN_STRUCT_FREE(asn_DEF_NR_DRB_ToReleaseList, ue_p->DRB_ReleaseList);
ue_p->DRB_ReleaseList = NULL;
// TODO refactor dedicatedNAS_MessageList
int size = rrc_gNB_encode_RRCReconfiguration(rrc, ue_p, xid, dedicatedNAS_MessageList, buffer, sizeof(buffer), false);
DevAssert(size > 0 && size <= sizeof(buffer));
LOG_I(NR_RRC, "UE %d: Generate RRCReconfiguration (bytes %d, xid %d)\n", ue_p->rrc_ue_id, size, xid);
nr_rrc_transfer_protected_rrc_message(rrc, ue_p, DCCH, buffer, size);