The
Namf_Communication_NonUeN2InfoSubscribe service operation is specified in
TS 23.502, subclause 5.2.2.2.18.
The NonUeN2InfoSubscribe service operation shall be invoked by the NF Service Consumer (e.g. CBCF or PWS-IWF) to subscribe to the delivery of non-UE specific PWS information from the NG-RAN node, e.g. for PWS events, sent via N2 to the AMF.
When NonUeN2InfoSubscribe service operation is used for PWS services:
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The NF Service Consumer ID is an identifier which is configured in the CBCF or PWS-IWF;
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The N2 information types are:
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WarningIndications;
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RestartFailure;
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if the N2 information type is WarningIndications then the NF Service Consumer subscribes to receiving Write-Replace-Warning Indication messages (see subclause 9.2.30) and Stop-Warning Indication messages (see subclause 9.2.31) from the AMF, and
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if the N2 information type is RestartFailure then the NF Service Consumer subscribes to receiving Restart Indications (see subclause 9.2.32) and Failure Indications (see subclause 9.2. 33) from the NG-RAN node.
The
Namf_Communication_NonUeN2InfoUnSubscribe service operation is specified in
TS 23.502, subclause 5.2.2.2.19.
The NonUeN2InfoUnSubscribe service opration shall be invoked by the NF Service Consumer (e.g. CBCF or PWS IWF) to unsubscribe to stop notifying non-UE specific N2 information from the NG-RAN node, e.g. for PWS events.
The
Namf_Communication_NonUeN2InfoNotify service operation is specified in
TS 23.502, subclause 5.2.2.2.20.
The NonUeN2InfoNotify service operation is used by AMF to notify a particular PWS event towards the NF Service Consumer (e.g. CBCF or PWS-IWF) that has subscribed for the specific information. The AMF receives messages for such PWS events from NG-RAN via N2.
When NonUeN2InfoNotify service operation is used for PWS services, the N2 information consists of all (mandatory and optionally) available information provided via N2 in the Write-Replace Warning Indication (see
subclause 9.2.30), a Stop Warning Indication (see
subclause 9.2.31), a PWS Restart Indication (see
subclause 9.2.32) or a PWS Failure Indication (see
subclause 9.2.33).