[L] Change in osmo-ttcn3-hacks[master]: Add optonal e-RAB lists to HANDOVER messages

15 Sep 2025

jolly has submitted this change. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/41093?usp=email )
Change subject: Add optonal e-RAB lists to HANDOVER messages
......................................................................
Add optonal e-RAB lists to HANDOVER messages
These lists are required to test release of e-RABs during handover
prparation and indication of failed e-RABS during handover resource
allocation.
New templates for the new lists and list items are added.
Related: SYS#7309
Change-Id: I78d2fa8e72bb672674727a01d5c5a9aaf31cab7b
---
M library/s1ap/S1AP_Templates.ttcn
1 file changed, 251 insertions(+), 96 deletions(-)
Approvals:
  Jenkins Builder: Verified
  fixeria: Looks good to me, approved
  pespin: Looks good to me, but someone else must approve

diff --git a/library/s1ap/S1AP_Templates.ttcn b/library/s1ap/S1AP_Templates.ttcn
index 3f9b1f8..34b1cb0 100644
--- a/library/s1ap/S1AP_Templates.ttcn
+++ b/library/s1ap/S1AP_Templates.ttcn
@@ -2516,41 +2516,126 @@
 }
/* 9.1.5.2 HANDOVER COMMAND */
+private function
+f_ts_S1AP_HandoverCmd(template (value) MME_UE_S1AP_ID mme_id,
+		      template (value) ENB_UE_S1AP_ID enb_id,
+		      template (value) HandoverType ho_type,
+		      template (value) E_RABSubjecttoDataForwardingList rab_forward_items,
+		      template (value) octetstring container,
+		      template (omit) E_RABList rab_release_items := omit)
+return template (value) HandoverCommand
+{
+	var template (value) HandoverCommand cmd := {
+		protocolIEs := {
+			{
+				id := S1AP_Constants.id_MME_UE_S1AP_ID,
+				criticality := reject,
+				value_ := { MME_UE_S1AP_ID := mme_id }
+			}, {
+				id := S1AP_Constants.id_eNB_UE_S1AP_ID,
+				criticality := reject,
+				value_ := { ENB_UE_S1AP_ID := enb_id }
+			}, {
+				id := S1AP_Constants.id_HandoverType,
+				criticality := reject,
+				value_ := { HandoverType := ho_type }
+			}, {
+				id := S1AP_Constants.id_E_RABSubjecttoDataForwardingList,
+				criticality := ignore,
+				value_ := { E_RABSubjecttoDataForwardingList := rab_forward_items }
+			}
+		}
+	};
+
+	var integer idx := lengthof(cmd.protocolIEs);
+	if (isvalue(rab_release_items)) {
+		cmd.protocolIEs[idx] := {
+			id := S1AP_Constants.id_E_RABtoReleaseListHOCmd,
+			criticality := ignore,
+			value_ := { E_RABList := rab_release_items }
+		};
+		idx := idx + 1;
+	}
+
+	cmd.protocolIEs[idx] := {
+		id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
+		criticality := reject,
+		value_ := { Target_ToSource_TransparentContainer := container }
+	};
+	idx := idx + 1;
+
+	return cmd;
+}
+private function
+f_tr_S1AP_HandoverCmd(template (present) MME_UE_S1AP_ID mme_id,
+		      template (present) ENB_UE_S1AP_ID enb_id,
+		      template (present) HandoverType ho_type,
+		      template (present) E_RABSubjecttoDataForwardingList rab_forward_items,
+		      template (present) octetstring container,
+		      template E_RABList rab_release_items := *)
+return template HandoverCommand
+{
+	var template HandoverCommand cmd := {
+		protocolIEs := {
+			{
+				id := S1AP_Constants.id_MME_UE_S1AP_ID,
+				criticality := reject,
+				value_ := { MME_UE_S1AP_ID := mme_id }
+			}, {
+				id := S1AP_Constants.id_eNB_UE_S1AP_ID,
+				criticality := reject,
+				value_ := { ENB_UE_S1AP_ID := enb_id }
+			}, {
+				id := S1AP_Constants.id_HandoverType,
+				criticality := reject,
+				value_ := { HandoverType := ho_type }
+			}, {
+				id := S1AP_Constants.id_E_RABSubjecttoDataForwardingList,
+				criticality := ignore,
+				value_ := { E_RABSubjecttoDataForwardingList := rab_forward_items }
+			}
+		}
+	};
+
+	var integer idx := lengthof(cmd.protocolIEs);
+	if (ispresent(rab_release_items)) {
+		cmd.protocolIEs[idx] := {
+			id := S1AP_Constants.id_E_RABtoReleaseListHOCmd,
+			criticality := ignore,
+			value_ := { E_RABList := rab_release_items }
+		};
+		idx := idx + 1;
+	} else if (istemplatekind(rab_release_items, "*")) {
+		cmd.protocolIEs[idx] := *;
+		idx := idx + 1;
+	}
+
+	cmd.protocolIEs[idx] := {
+		id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
+		criticality := reject,
+		value_ := { Target_ToSource_TransparentContainer := container }
+	};
+	idx := idx + 1;
+
+	/* ignore the remaining IEs */
+	cmd.protocolIEs[idx] := *;
+
+	return cmd;
+}
+
 template (value) S1AP_PDU
 ts_S1AP_HandoverCmd(template (value) MME_UE_S1AP_ID mme_id,
    	    template (value) ENB_UE_S1AP_ID enb_id,
    	    template (value) HandoverType ho_type,
    	    template (value) E_RABSubjecttoDataForwardingList rab_forward_items,
-		    template (value) octetstring container) := {
+		    template (value) octetstring container,
+		    template (omit) E_RABList rab_release_items := omit) := {
    successfulOutcome := {
    	procedureCode := S1AP_Constants.id_HandoverPreparation,
    	criticality := reject,
    	value_ := {
-			HandoverCommand := {
-				protocolIEs := {
-					{
-						id := S1AP_Constants.id_MME_UE_S1AP_ID,
-						criticality := reject,
-						value_ := { MME_UE_S1AP_ID := mme_id }
-					}, {
-						id := S1AP_Constants.id_eNB_UE_S1AP_ID,
-						criticality := reject,
-						value_ := { ENB_UE_S1AP_ID := enb_id }
-					}, {
-						id := S1AP_Constants.id_HandoverType,
-						criticality := reject,
-						value_ := { HandoverType := ho_type }
-					}, {
-						id := S1AP_Constants.id_E_RABSubjecttoDataForwardingList,
-						criticality := ignore,
-						value_ := { E_RABSubjecttoDataForwardingList := rab_forward_items }
-					}, {
-						id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
-						criticality := reject,
-						value_ := { Target_ToSource_TransparentContainer := container }
-					}
-				}
-			}
+			HandoverCommand := f_ts_S1AP_HandoverCmd(mme_id, enb_id, ho_type, rab_forward_items,
+								 container, rab_release_items)
    	}
    }
 }
@@ -2559,36 +2644,14 @@
    	    template (present) ENB_UE_S1AP_ID enb_id := ?,
    	    template (present) HandoverType ho_type := ?,
    	    template (present) E_RABSubjecttoDataForwardingList rab_forward_items := ?,
-		    template (present) octetstring container := ?) := {
+		    template (present) octetstring container := ?,
+		    template E_RABList rab_release_items := *) := {
    successfulOutcome := {
    	procedureCode := S1AP_Constants.id_HandoverPreparation,
    	criticality := reject,
    	value_ := {
-			HandoverCommand := {
-				protocolIEs := {
-					{
-						id := S1AP_Constants.id_MME_UE_S1AP_ID,
-						criticality := reject,
-						value_ := { MME_UE_S1AP_ID := mme_id }
-					}, {
-						id := S1AP_Constants.id_eNB_UE_S1AP_ID,
-						criticality := reject,
-						value_ := { ENB_UE_S1AP_ID := enb_id }
-					}, {
-						id := S1AP_Constants.id_HandoverType,
-						criticality := reject,
-						value_ := { HandoverType := ho_type }
-					}, *, {
-						id := S1AP_Constants.id_E_RABSubjecttoDataForwardingList,
-						criticality := ignore,
-						value_ := { E_RABSubjecttoDataForwardingList := rab_forward_items }
-					}, *, {
-						id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
-						criticality := reject,
-						value_ := { Target_ToSource_TransparentContainer := container }
-					}, *
-				}
-			}
+			HandoverCommand := f_tr_S1AP_HandoverCmd(mme_id, enb_id, ho_type, rab_forward_items,
+								 container, rab_release_items)
    	}
    }
 }
@@ -2807,37 +2870,147 @@
    iE_Extensions := *
 }
+template (value) E_RABFailedtoSetupListHOReqAck
+ts_E_RABFailedToSetupListHOReqAck(template (value) E_RABFailedToSetupItemHOReqAck it) := {
+	{
+		id := S1AP_Constants.id_E_RABFailedtoSetupItemHOReqAck,
+		criticality := ignore,
+		value_ := { E_RABFailedToSetupItemHOReqAck := it }
+	}
+}
+template (present) E_RABFailedtoSetupListHOReqAck
+tr_E_RABFailedToSetupListHOReqAck(template (present) E_RABFailedToSetupItemHOReqAck it := ?) := {
+	{
+		id := S1AP_Constants.id_E_RABFailedtoSetupItemHOReqAck,
+		criticality := ignore,
+		value_ := { E_RABFailedToSetupItemHOReqAck := it }
+	}
+}
+template (value) E_RABFailedToSetupItemHOReqAck
+ts_E_RABFailedToSetupItemHOReqAck(template (value) E_RAB_ID rab_id,
+				  template (value) Cause cause) := {
+	e_RAB_ID := rab_id,
+	cause := cause,
+	iE_Extensions := omit
+}
+template (present) E_RABFailedToSetupItemHOReqAck
+tr_E_RABFailedToSetupItemHOReqAck(template (present) E_RAB_ID rab_id := ?,
+				  template (present) Cause cause := ?) := {
+	e_RAB_ID := rab_id,
+	cause := cause,
+	iE_Extensions := *
+}
+
 /* 9.1.5.5 HANDOVER REQUEST ACKNOWLEDGE */
+private function
+f_ts_S1AP_HandoverAck(template (value) MME_UE_S1AP_ID mme_id,
+		      template (value) ENB_UE_S1AP_ID enb_id,
+		      template (value) E_RABAdmittedList rab_admitted_items,
+		      template (value) octetstring container,
+		      template (omit) E_RABFailedtoSetupListHOReqAck rab_failed_items := omit)
+return template (value) HandoverRequestAcknowledge
+{
+	var template (value) HandoverRequestAcknowledge ack := {
+		protocolIEs := {
+			{
+				id := S1AP_Constants.id_MME_UE_S1AP_ID,
+				criticality := ignore,
+				value_ := { MME_UE_S1AP_ID := mme_id }
+			}, {
+				id := S1AP_Constants.id_eNB_UE_S1AP_ID,
+				criticality := ignore,
+				value_ := { ENB_UE_S1AP_ID := enb_id }
+			}, {
+				id := S1AP_Constants.id_E_RABAdmittedList,
+				criticality := ignore,
+				value_ := { E_RABAdmittedList := rab_admitted_items }
+			}
+		}
+	};
+
+	var integer idx := lengthof(ack.protocolIEs);
+	if (isvalue(rab_failed_items)) {
+		ack.protocolIEs[idx] := {
+			id := S1AP_Constants.id_E_RABFailedToSetupListHOReqAck,
+			criticality := ignore,
+			value_ := { E_RABFailedtoSetupListHOReqAck := rab_failed_items }
+		};
+		idx := idx + 1;
+	}
+
+	ack.protocolIEs[idx] := {
+		id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
+		criticality := reject,
+		value_ := { Target_ToSource_TransparentContainer := container }
+	};
+	idx := idx + 1;
+
+	return ack;
+}
+private function
+f_tr_S1AP_HandoverAck(template (present) MME_UE_S1AP_ID mme_id := ?,
+		      template (present) ENB_UE_S1AP_ID enb_id := ?,
+		      template (present) E_RABAdmittedList rab_admitted_items := ?,
+		      template (present) octetstring container,
+		      template E_RABFailedtoSetupListHOReqAck rab_failed_items := *)
+return template HandoverRequestAcknowledge
+{
+	var template HandoverRequestAcknowledge ack := {
+		protocolIEs := {
+			{
+				id := S1AP_Constants.id_MME_UE_S1AP_ID,
+				criticality := ignore,
+				value_ := { MME_UE_S1AP_ID := mme_id }
+			}, {
+				id := S1AP_Constants.id_eNB_UE_S1AP_ID,
+				criticality := ignore,
+				value_ := { ENB_UE_S1AP_ID := enb_id }
+			}, {
+				id := S1AP_Constants.id_E_RABAdmittedList,
+				criticality := ignore,
+				value_ := { E_RABAdmittedList := rab_admitted_items }
+			}
+		}
+	};
+
+	var integer idx := lengthof(ack.protocolIEs);
+	if (ispresent(rab_failed_items)) {
+		ack.protocolIEs[idx] := {
+			id := S1AP_Constants.id_E_RABFailedToSetupListHOReqAck,
+			criticality := ignore,
+			value_ := { E_RABFailedtoSetupListHOReqAck := rab_failed_items }
+		};
+		idx := idx + 1;
+	} else if (istemplatekind(rab_failed_items, "*")) {
+		ack.protocolIEs[idx] := *;
+		idx := idx + 1;
+	}
+
+	ack.protocolIEs[idx] := {
+		id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
+		criticality := reject,
+		value_ := { Target_ToSource_TransparentContainer := container }
+	};
+	idx := idx + 1;
+
+	/* ignore the remaining IEs */
+	ack.protocolIEs[idx] := *;
+
+	return ack;
+}
+
 template (value) S1AP_PDU
 ts_S1AP_HandoverAck(template (value) MME_UE_S1AP_ID mme_id,
    	    template (value) ENB_UE_S1AP_ID enb_id,
    	    template (value) E_RABAdmittedList rab_admit_items,
-		    template (value) octetstring container) := {
+		    template (value) octetstring container,
+		    template (omit) E_RABFailedtoSetupListHOReqAck rab_failed_items := omit) := {
    successfulOutcome := {
    	procedureCode := S1AP_Constants.id_HandoverResourceAllocation,
    	criticality := reject,
    	value_ := {
-			HandoverRequestAcknowledge := {
-				protocolIEs := {
-					{
-						id := S1AP_Constants.id_MME_UE_S1AP_ID,
-						criticality := ignore,
-						value_ := { MME_UE_S1AP_ID := mme_id }
-					}, {
-						id := S1AP_Constants.id_eNB_UE_S1AP_ID,
-						criticality := ignore,
-						value_ := { ENB_UE_S1AP_ID := enb_id }
-					}, {
-						id := S1AP_Constants.id_E_RABAdmittedList,
-						criticality := ignore,
-						value_ := { E_RABAdmittedList := rab_admit_items }
-					}, {
-						id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
-						criticality := reject,
-						value_ := { Target_ToSource_TransparentContainer := container }
-					}
-				}
-			}
+			HandoverRequestAcknowledge := f_ts_S1AP_HandoverAck(mme_id, enb_id, rab_admit_items,
+									    container, rab_failed_items)
    	}
    }
 }
@@ -2845,32 +3018,14 @@
 tr_S1AP_HandoverAck(template (present) MME_UE_S1AP_ID mme_id := ?,
    	    template (present) ENB_UE_S1AP_ID enb_id := ?,
    	    template (present) E_RABAdmittedList rab_admit_items := ?,
-		    template (present) octetstring container := ?) := {
+		    template (present) octetstring container := ?,
+		    template E_RABFailedtoSetupListHOReqAck rab_failed_items := *) := {
    successfulOutcome := {
    	procedureCode := S1AP_Constants.id_HandoverResourceAllocation,
    	criticality := reject,
    	value_ := {
-			HandoverRequestAcknowledge := {
-				protocolIEs := {
-					{
-						id := S1AP_Constants.id_MME_UE_S1AP_ID,
-						criticality := ignore,
-						value_ := { MME_UE_S1AP_ID := mme_id }
-					}, {
-						id := S1AP_Constants.id_eNB_UE_S1AP_ID,
-						criticality := ignore,
-						value_ := { ENB_UE_S1AP_ID := enb_id }
-					}, {
-						id := S1AP_Constants.id_E_RABAdmittedList,
-						criticality := ignore,
-						value_ := { E_RABAdmittedList := rab_admit_items }
-					}, *, {
-						id := S1AP_Constants.id_Target_ToSource_TransparentContainer,
-						criticality := reject,
-						value_ := { Target_ToSource_TransparentContainer := container }
-					}, *
-				}
-			}
+			HandoverRequestAcknowledge := f_tr_S1AP_HandoverAck(mme_id, enb_id, rab_admit_items,
+									    container, rab_failed_items)
    	}
    }
 }
-- 
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Gerrit-MessageType: merged
Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I78d2fa8e72bb672674727a01d5c5a9aaf31cab7b
Gerrit-Change-Number: 41093
Gerrit-PatchSet: 3
Gerrit-Owner: jolly andreas@eversberg.eu
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria vyanitskiy@sysmocom.de
Gerrit-Reviewer: jolly andreas@eversberg.eu
Gerrit-Reviewer: pespin pespin@sysmocom.de



    

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[L] Change in osmo-ttcn3-hacks[master]: Add optonal e-RAB lists to HANDOVER messages