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9.2 PCF Services  9.2.1 General  9.2.2 Npcf_MBSPolicyControl service  9.2.2.1 General  9.2.2.2 Npcf_MBSPolicyControl_Create service operation  9.2.2.4 Npcf_MBSPolicyControl_Delete service operation  9.2.2.5 Npcf_MBSPolicyControl_Update service operation  9.2.3 Npcf_MBSPolicyAuthorization Service  9.2.3.1 General  9.2.3.2 Npcf_MBSPolicyAuthorization_Create service operation  9.2.3.3 Npcf_MBSPolicyAuthorization_Update service operation  9.2.3.4 Npcf_MBSPolicyAuthorization_Delete service operation 
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9.2  PCF Services  p. 119

9.2.1  General  p. 119

The following Table illustrates the PCF Services for MBS.
Service Name Service Operations Operation Semantics Example Consumer (s)
Npcf_MBSPolicyControlCreateRequest/ResponseMB-SMF
UpdateRequest/ResponseMB-SMF
DeleteRequest/ResponseMB-SMF
Npcf_MBSPolicyAuthorizationCreateRequest/ResponseAF, NEF, MBSF
UpdateRequest/ResponseAF, NEF, MBSF
DeleteRequest/ResponseAF, NEF, MBSF
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9.2.2  Npcf_MBSPolicyControl service  p. 119

9.2.2.1  General  p. 119

Service description:
NF Service Consumer, e.g. MB-SMF, can create and manage a MBS Policy Association in the PCF through which the NF Service Consumer receives policy information for the MBS Session.
As part of this service, the PCF may provide the NF Service Consumer, e.g. MB-SMF, with policy information for the MBS Session that may contain (the details are defined in clause 6.10):
  • Policy information applicable for an entire MBS Session.
  • PCC rule information.
  • Policy Control Request Trigger information.
At MBS Session establishment the NF Service Consumer, e.g. MB-SMF, requests the creation of a corresponding MBS Policy Association with the PCF (Npcf_MBSPolicyControl_Create) and provides relevant parameters about the MBS Session to the PCF.
  • When the PCF has created the "MBS Policy Association", the PCF may provide policy information as defined above.
When a Policy Control Request Trigger condition is met the NF Service Consumer, e.g. MB-SMF, requests the update (Npcf_MBSPolicyControl_Update) of the MBS Policy Association by providing information on the condition(s) that have been met. The PCF may provide updated policy information for the MBS session to the NF Service Consumer.
The PCF may at any time provide updated policy information for the MBS session (Npcf_MBSPolicyControl_UpdateNotify).
At MBS Session Release the NF Service Consumer, e.g. MB-SMF, requests the deletion of the corresponding MBS Policy Association.
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9.2.2.2  Npcf_MBSPolicyControl_Create service operation  p. 120

Service operation name:
Npcf_MBSPolicyControl_Create
Description:
The NF Service Consumer can request the creation of a MBS Policy Association and provide relevant parameters about the MBS Session to the PCF.
Inputs, Required:
MBS Session ID.
Inputs, Optional:
MBS Service Information (as defined in clause 6.14), Area Session Policy ID, DNN, S-NSSAI.
Outputs, Required:
Success or Failure. In the case of Success, MBS Policy Association ID and Policy information for the MBS Session (as defined in clause 6.10).
Outputs, Optional:
In the case of Failure, the Service Information that can be accepted by the PCF. In the case of Failure, indication that another PCF shall be contacted and an ID of that other PCF.
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9.2.2.3  Void

9.2.2.4  Npcf_MBSPolicyControl_Delete service operation  p. 120

Service operation name:
Npcf_MBSPolicyControl_Delete
Description:
The NF Service Consumer (i.e. MB-SMF) can request the deletion of the MBS Policy Association and of the associated resources.
Inputs, Required:
MBS Policy Association ID.
Inputs, Optional:
None.
Outputs, Required:
Success or Failure.
Outputs, Optional:
None.

9.2.2.5  Npcf_MBSPolicyControl_Update service operation  p. 120

Service operation name:
Npcf_MBSPolicyControl_Update
Description:
The NF Service Consumer can request an update of the MBS Policy Association.
Inputs, Required:
MBS Policy Association ID.
Inputs, Optional:
MBS Service Information (as defined in clause 6.14), Information on the Policy Control Request Trigger condition that has been met.
Outputs, Required:
Success or Failure.
Outputs, Optional:
In the case of Failure, the Service Information that can be accepted by the PCF. In the case of Success, Policy information for the MBS Session (as defined in clause 6.10).

9.2.3  Npcf_MBSPolicyAuthorization Service  p. 121

9.2.3.1  General  p. 121

Service description:
This service is to authorise an AF / NEF / MBSF request for an MBS service and to create policies as requested by the authorized AF for the MBS Service. This service also allows the NF consumer to subscribe/unsubscribe the notification of events.

9.2.3.2  Npcf_MBSPolicyAuthorization_Create service operation  p. 121

Service operation name:
Npcf_MBSPolicyAuthorization_Create
Description:
Authorize the request, and optionally determines and installs MBS Policy Control Data according to the information provided by the NF Consumer.
Inputs, Required:
MBS Session ID.
Inputs, Optional:
DNN if available, S-NSSAI if available, MBS Service Information (as defined in clause 6.14), Request for location dependent MBS session.
Outputs, Required:
Success (application session context) or Failure (reason for failure).
Outputs, Optional:
Area Session Policy ID (for location dependent session), in the case of Failure, the MBS Service Information that can be accepted by the PCF.

9.2.3.3  Npcf_MBSPolicyAuthorization_Update service operation  p. 121

Service operation name:
Npcf_MBSPolicyAuthorization_Update
Description:
Provides updated information to the PCF.
Inputs, Required:
Identification of the application session context.
Inputs, Optional:
MBS Service Information (as defined in clause 6.14).
Outputs, Required:
Success or Failure (reason for failure).
Outputs, Optional:
In the case of Failure, the MBS Service Information that can be accepted by the PCF. In the case of Success, indication that the PCF has to be contacted.
Provides updated application level information and communicates with Npcf_MBSPolicyControl service to determine and install the policy according to the information provided by the NF Consumer. Updates an application context in the PCF.
Up

9.2.3.4  Npcf_MBSPolicyAuthorization_Delete service operation  p. 121

Service operation name:
Npcf_MBSPolicyAuthorization_Delete
Description:
Provides means for the NF Consumer to delete the context of application level session information.
Inputs, Required:
Identification of the application session context.
Inputs, Optional:
None.
Outputs, Required:
Success or Failure.
Outputs, Optional:
None.

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