STOP-9 Partial stop of an active alert.

Description

Stop ongoing alert in some of the cells in which it is active and continue active in all other cells.

Pre-requisites

• An alert is ongoing within an area covered by a multiple cells.

Steps to execute

1. CBE sends CAP Cancel message with:
   • The same identifier as in the CAP Alert message that started the broadcast.
   • An area that is a subset of the area of the current active alert.

Information flow

Result

Verify that:

1. The CBC sends a STOP WARNING REQUEST only to the MMEs that control the eNBs that shall stop broadcasting the ongoing alert. Presence of parameters in this message shall be as shown in the following table:

   Information Element	Included	Value
   Message Identifier	Yes	for current iteration
   Serial Number	Yes	Same as for ongoing broadcast
   List of TAIs	May	TAIs of all the cells in IE Warning Area List
   Warning Area List	May	List of cells in which the alert shall stop
   Send Stop Warning Indication	Yes	true
   Stop All Indication	No

2. The MME responds with a STOP WARNING RESPONSE with contents according to the following table.

   Information Element	Included	Value
   Message Identifier	Yes	Same as in flow 2
   Serial Number	Yes	Same as in flow 2
   Cause	Yes	Set to value Message accepted
   Criticality Diagnostics	No
   Unknown Tracking Area List	No

3. The MME sends one or more STOP WARNING INDICATION messages with content according to the following table.

   Information Element	Included	Value
   Message Identifier	Yes	Same as in flow 2
   Serial Number	Yes	Same as in flow 2
   Broadcast Cancelled Area List	Yes	A list with cells listed in Warning Area List IE in flow 2
   Broadcast Empty Area List	No

The union of all the ECGIs in all the *Broadcast Cancelled Area List" IEs received shall contain all the ECGIs inside the Warning Area List of flow 2.

4. Broadcast of the alert has stopped in all the cells inside the Warning Area List of flow 2, but continues active in all other cells in which it was active.

5. If supported by the CBE - CBC interface, the CBC informs the CBE about the successful outcome of the partial stop.

Iterations

This TC should be iterated for the alert types in the following table that are applicable in the country in which the CBC is deployed:

Iteration	Alert Type	Message identifier
1	EU-Alert Level 1 \ WEA Presidential	4370 (0x1112)
2	EU-Alert Level 2 \ WEA Extreme	[4371, 4372] ([0x1113, 0x1114])
3	EU-Alert Level 3 \ WEA Severe	[4373 ... 4378] ([0x1115 ... 0x111A)
4	EU-Alert & WEA AMBER	4379 (0x111B)
5	WEA RMT	4380 (0x111C)
6	WEA Exercise	4381 (0x111D)
7	WEA Operator defined use	4382 (0x111E)
8	EU-Alert Level 4 \ WEA Public Safety	4396 (0x112C)
9	WEA State/Local test	4398 (0x112E)
10	EU-Info	6400 (0x1900)