maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

handling reception of RRCReestablishment

Browse Source
This commit is contained in:
francescomani
2024-03-13 17:57:34 +01:00
parent 985802c06c
commit f31cf3a68f
1 changed files with 36 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/RRC/NR_UE/rrc_UE.c
+36 -3
View File
@@ -139,7 +139,7 @@ static void nr_rrc_manage_rlc_bearers(NR_UE_RRC_INST_t *rrc,
static void nr_rrc_ue_process_RadioBearerConfig(NR_UE_RRC_INST_t *ue_rrc,
NR_RadioBearerConfig_t *const radioBearerConfig);
static void nr_rrc_ue_generate_rrcReestablishmentComplete(NR_RRCReestablishment_t *rrcReestablishment);
static void nr_rrc_ue_generate_rrcReestablishmentComplete(const NR_UE_RRC_INST_t *rrc, const NR_RRCReestablishment_t *rrcReestablishment);
static void process_lte_nsa_msg(NR_UE_RRC_INST_t *rrc, nsa_msg_t *msg, int msg_len);
static void nr_rrc_ue_process_rrcReconfiguration(NR_UE_RRC_INST_t *rrc,
int gNB_index,
@@ -1320,6 +1320,36 @@ static void nr_rrc_ue_generate_RRCReconfigurationComplete(NR_UE_RRC_INST_t *rrc,
nr_pdcp_data_req_srb(rrc->ue_id, srb_id, 0, size, buffer, deliver_pdu_srb_rlc, NULL);
}
static void nr_rrc_ue_process_rrcReestablishment(NR_UE_RRC_INST_t *rrc,
const int gNB_index,
const NR_RRCReestablishment_t *rrcReestablishment)
{
// implementign procedues as described in 38.331 section 5.3.7.5
// stop timer T301
NR_UE_Timers_Constants_t *timers = &rrc->timers_and_constants;
nr_timer_stop(&timers->T301);
// store the nextHopChainingCount value
NR_RRCReestablishment_IEs_t *ies = rrcReestablishment->criticalExtensions.choice.rrcReestablishment;
AssertFatal(ies, "Not expecting RRCReestablishment_IEs to be NULL\n");
int nh = rrcReestablishment->criticalExtensions.choice.rrcReestablishment->nextHopChainingCount;
// TODO update the K gNB key based on the current K gNB key or the NH, using the stored nextHopChainingCount value
// TODO derive the K RRCenc and K UPenc keys associated with the previously configured cipheringAlgorithm
// TODO derive the K RRCint and K UPint keys associated with the previously configured integrityProtAlgorithm
// TODO request lower layers to verify the integrity protection of the RRCReestablishment message
// TODO if the integrity protection check of the RRCReestablishment message fails -> go to IDLE
// TODO configure lower layers to resume integrity protection for SRB1
// TODO configure lower layers to resume ciphering for SRB1
// release the measurement gap configuration indicated by the measGapConfig, if configured
rrcPerNB_t *rrcNB = rrc->perNB + gNB_index;
asn1cFreeStruc(asn_DEF_NR_MeasGapConfig, rrcNB->measGapConfig);
// resetting the RA trigger state after receiving MSG4 with RRCReestablishment
rrc->ra_trigger = RA_NOT_RUNNING;
// submit the RRCReestablishmentComplete message to lower layers for transmission
nr_rrc_ue_generate_rrcReestablishmentComplete(rrc, rrcReestablishment);
}
static int nr_rrc_ue_decode_dcch(NR_UE_RRC_INST_t *rrc,
const srb_id_t Srb_id,
const uint8_t *const Buffer,
@@ -1375,7 +1405,7 @@ static int nr_rrc_ue_decode_dcch(NR_UE_RRC_INST_t *rrc,
case NR_DL_DCCH_MessageType__c1_PR_rrcReestablishment:
LOG_I(NR_RRC, "Logical Channel DL-DCCH (SRB1), Received RRCReestablishment\n");
nr_rrc_ue_generate_rrcReestablishmentComplete(c1->choice.rrcReestablishment);
nr_rrc_ue_process_rrcReestablishment(rrc, gNB_indexP, c1->choice.rrcReestablishment);
break;
case NR_DL_DCCH_MessageType__c1_PR_dlInformationTransfer: {
@@ -1678,12 +1708,15 @@ void nr_rrc_initiate_rrcReestablishment(NR_UE_RRC_INST_t *rrc,
nr_rrc_mac_config_req_reset(rrc->ue_id, RE_ESTABLISHMENT);
}
static void nr_rrc_ue_generate_rrcReestablishmentComplete(NR_RRCReestablishment_t *rrcReestablishment)
static void nr_rrc_ue_generate_rrcReestablishmentComplete(const NR_UE_RRC_INST_t *rrc,
const NR_RRCReestablishment_t *rrcReestablishment)
{
uint8_t buffer[RRC_BUFFER_SIZE] = {0};
int size = do_RRCReestablishmentComplete(buffer, RRC_BUFFER_SIZE,
rrcReestablishment->rrc_TransactionIdentifier);
LOG_I(NR_RRC, "[RAPROC] Logical Channel UL-DCCH (SRB1), Generating RRCReestablishmentComplete (bytes %d)\n", size);
int srb_id = 1; // RRC re-establishment complete on SRB1
nr_pdcp_data_req_srb(rrc->ue_id, srb_id, 0, size, buffer, deliver_pdu_srb_rlc, NULL);
}
void *recv_msgs_from_lte_ue(void *args_p)