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Add NGAP Handover Failure message

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This message is sent from the Target NG-RAN to the AMF.

The commit introduces:
* NGAP encoding function
* N2 callback for the target gNB
* handle the failure in RRC, inform NGAP
* send NGAP message to AMF via SCTP

Note: UE context in NGAP is fetched from the amf_ue_ngap_id

Co-authored-by: batuhan duyuler <batuhan.duyuler@firecell.io>
This commit is contained in:
Guido Casati
2025-09-18 11:34:30 +02:00
co-authored by batuhan duyuler
parent 6e4f1b7b31
commit 92abefb815
11 changed files with 122 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/COMMON/ngap_messages_def.h
+1
View File
@@ -72,6 +72,7 @@ MESSAGE_DEF(NGAP_PDUSESSION_SETUP_RESP , MESSAGE_PRIORITY_MED, ngap_pdu
MESSAGE_DEF(NGAP_PDUSESSION_MODIFY_RESP , MESSAGE_PRIORITY_MED, ngap_pdusession_modify_resp_t , ngap_pdusession_modify_resp)
MESSAGE_DEF(NGAP_PDUSESSION_RELEASE_RESPONSE , MESSAGE_PRIORITY_MED, ngap_pdusession_release_resp_t , ngap_pdusession_release_resp)
MESSAGE_DEF(NGAP_HANDOVER_REQUIRED, MESSAGE_PRIORITY_MED, ngap_handover_required_t, ngap_handover_required)
MESSAGE_DEF(NGAP_HANDOVER_FAILURE, MESSAGE_PRIORITY_MED, ngap_handover_failure_t, ngap_handover_failure)
/* NGAP -> RRC messages */
MESSAGE_DEF(NGAP_DOWNLINK_NAS , MESSAGE_PRIORITY_MED, ngap_downlink_nas_t , ngap_downlink_nas )
openair2/COMMON/ngap_messages_types.h
+10
View File
@@ -66,6 +66,8 @@
#define NGAP_PDUSESSION_MODIFY_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_pdusession_modify_req
#define NGAP_PAGING_IND(mSGpTR) (mSGpTR)->ittiMsg.ngap_paging_ind
#define NGAP_HANDOVER_REQUIRED(mSGpTR) (mSGpTR)->ittiMsg.ngap_handover_required
#define NGAP_HANDOVER_FAILURE(mSGpTR) (mSGpTR)->ittiMsg.ngap_handover_failure
#define NGAP_UE_CONTEXT_RELEASE_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_release_req
#define NGAP_PDUSESSION_RELEASE_COMMAND(mSGpTR) (mSGpTR)->ittiMsg.ngap_pdusession_release_command
#define NGAP_PDUSESSION_RELEASE_RESPONSE(mSGpTR) (mSGpTR)->ittiMsg.ngap_pdusession_release_resp
@@ -548,6 +550,14 @@ typedef struct {
source_to_target_transparent_container_t *source2target;
} ngap_handover_required_t;
/* 3GPP TS 38.413 9.2.3.6 */
typedef struct {
// AMF UE NGAP ID (M)
uint64_t amf_ue_ngap_id;
// Cause (M)
ngap_cause_t cause;
} ngap_handover_failure_t;
typedef struct ngap_ue_cap_info_ind_s {
uint32_t gNB_ue_ngap_id;
byte_array_t ue_radio_cap;