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Content for  TS 23.502  Word version:  17.2.1

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5.2.18  UCMF Services |R16|Word‑p. 645

5.2.18.1  General

The following table illustrates the UCMF Services.
NF service Service Operations Operation Semantics Example Consumer(s)
Nucmf_ProvisioningCreateRequest/ResponseAF, NEF
DeleteRequest/ResponseAF, NEF
UpdateRequest/ResponseAF, NEF
Nucmf_UECapabilityManagementResolveRequest/ResponseAMF
AssignRequest/ResponseAMF
SubscribeSubscribe/NotifyAMF
UnsubscribeSubscribe/NotifyAMF
NotifySubscribe/NotifyAMF
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5.2.18.2  Nucmf_Provisioning service

5.2.18.2.1  Nucmf_Provisioning_Create service operation
Service operation name:
Nucmf_Provisioning_Create
Description:
The consumer creates a UCMF dictionary entry (or more entries) for a Manufacturer-assigned UE Radio Capability ID(s). For each UE Radio Capability ID the following inputs are provided:
  1. a UE radio access capability set with respective coding format or the UE radio access capability set in both TS 36.331 and TS 38.331 coding formats and each RATs' UE Radio Capability for Paging; and
  2. the related UE model(s) IMEI/TAC value(s) the UE radio capability ID applies to.
Inputs, Required:
(list of) [UE Radio Capability ID(s), set(s) of UE radio access capability set and UE Radio Capability for Paging and respective Coding format(s), (list of) IMEI/TAC value(s)].
Inputs, Optional:
None.
Outputs, Required:
None.
Outputs, Optional:
None.
 
The Coding format(s) indicates the format of the respective UE radio access capabilities as defined in TS 36.331 or TS 38.331. The UCMF dictionary entry shall not contain UTRAN radio capabilities.
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5.2.18.2.2  Nucmf_Provisioning_Delete service operation
Service operation name:
Nucmf_Provisioning_Delete
Description:
The consumer deletes a UCMF dictionary entry(s) for a Manufacturer-assigned UE Radio Capability ID(s). The consumer provides a (list of) UE radio capability ID value(s) to be deleted or it may provide the IMEI/TAC values for which the associated UE radio capability ID entries shall be no longer used.
Inputs, Required:
UE Radio Capability ID(s) of the UCMF dictionary entry(s) to be deleted or IMEI/TAC that no longer use associated UE radio Capability ID(s).
Inputs, Optional:
None.
Outputs, Required:
None.
Outputs, Optional:
None.
5.2.18.2.3  Nucmf_Provisioning_Update service operationWord‑p. 646
Service operation name:
Nucmf_Provisioning_Update
Description:
The consumer updates the list of IMEI/TAC values a UCMF dictionary entry (or a list of entries) applies to for a Manufacturer-assigned UE Radio Capability ID. For each UE Radio Capability ID provided, (a list of) UE model(s) IMEI/TAC value(s) to be added or removed to the related UCMF entry is provided.
Inputs, Required:
Update Type (one of "Add IMEI/TAC Values" or "Remove IMEI/TAC Values") and:
  • If Update Type is "Add IMEI/TAC Values", the (list of) UE Radio Capability ID(s) of the UCMF dictionary entry(ies) to be updated and the related additional (list of) IMEI/TAC(s); or
  • If Update Type is "Remove IMEI/TAC Values", the (list of) UE Radio Capability ID(s) of the UCMF dictionary entry(ies) to be updated and the related (list of) IMEI/TAC(s) to be removed.
Inputs, Optional:
None.
Outputs, Required:
None.
Outputs, Optional:
None.
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5.2.18.3  Nucmf_UECapabilityManagement Service

5.2.18.3.1  Nucmf_UECapabilityManagement Resolve service operation
Service operation name:
Nucmf_UECapabilityManagement_Resolve
Description:
Consumer NF gets the UE Radio Access Capability and one or more UE Radio Capability for Paging corresponding to a specific UE Radio Capability ID (either Manufacturer-assigned or PLMN-assigned) and Coding Format.
Inputs, Required:
UE Radio Capability ID, Coding format, one or more UE Radio Capability for Paging.
Inputs, Optional:
None.
Outputs, Required:
UE Radio Access Capability, UE Radio Capability for Paging.
Outputs, Optional:
None.
The Coding format indicates the format as defined in TS 36.331 or TS 38.331 of the UE Radio Access Capability expected by the NF in output. When the Coding Format is TS 36.331, the UCMF shall provide the UE Radio Capability for Paging for E-UTRA. When the Coding Format is TS 38.331, the UCMF shall provide the UE Radio Capability for Paging for NR and, if the PLMN supports E-UTRA connected to 5GC, shall provide the UE Radio Capability for Paging for E-UTRA.
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5.2.18.3.2  Nucmf_UECapabilityManagement_Assign service operation
Service or Service operation name:
Nucmf_UECapabilityManagement_Assign
Description:
The NF consumer sends to the UCMF:
  • the UE Radio Access Capability (and its Coding Format); or
  • the UE Radio Access Capability and UE Radio Capability for Paging in both TS 36.331 and TS 38.331 coding formats;
and obtains a PLMN-assigned UE Radio Capability ID in return.
Inputs, Required:
E Radio Access Capability(s), UE Radio Capability for Paging(s), Coding format(s), IMEI/TAC.
Inputs, Optional:
One or more UE Radio Capability for Paging.
Outputs, Required:
UE Radio Capability ID.
Outputs, Optional:
None.
The AMF does not send NB-IoT Radio Access Capability to the UCMF.
The Coding format indicates the format of the UE Radio Access Capability as defined in TS 36.331 or TS 38.331.
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5.2.18.3.3  Nucmf_UECapabilityManagement_Subscribe service operationWord‑p. 647
Service operation name:
Nucmf_UECapabilityManagement_Subscribe
Description:
The NF consumer subscribes for updates to UCMF dictionary entries and provides the coding format in which UE Radio Access Capability is expected by NF. The UCMF shall check the requested consumer is authorized to subscribe to requested updates.
Inputs, Required:
Coding format.
Inputs, Optional:
None.
Outputs, Required:
None.
Outputs, Optional:
None.
The Coding format indicates the format of the UE Radio Access Capability as defined in TS 36.331 or TS 38.331.
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5.2.18.3.4  Nucmf_UECapabilityManagement_Unsubscribe service operation
Service operation name:
Nucmf_UECapabilityManagement_Unsubscribe
Description:
The NF consumer unsubscribes from updates to UCMF dictionary entries.
Inputs, Required:
None.
Inputs, Optional:
None.
Outputs, Required:
None.
Outputs, Optional:
None.
5.2.18.3.5  Nucmf_UECapabilityManagement_Notify service operation
Service operation name:
Nucmf_UECapabilityManagement_Notify
Description:
Producer NF provides notifications about changes in UCMF to subscribed consumer NF.
Inputs, Required:
Notification Type ("creation", "deletion", "Added IMEI/TAC in Manufacturer Assigned operation requested list", "Removed IMEI/TAC from Manufacturer Assigned operation requested list", "Removed UE Radio Capability ID from Manufacturer Assigned operation requuested list").
Inputs, Optional:
If Notification Type is set to "creation": One or more UCMF dictionary entries, each UCMF dictionary entry consisting of a UE Radio Capability ID and the corresponding UE Radio Access Capability. If Notification Type is set to "deletion": One or more UE Radio Capability IDs. If Notification Type is set to "Added IMEI/TAC in Manufacturer Assigned operation requested list" or "Removed IMEI/TAC from Manufacturer Assigned operation requested list", one or more IMEI/TACs, if Notification type is "Removed UE Radio Capability ID from Manufacturer Assigned operation requested list, one or more PLMN assigned UE radio Capability IDs.
Outputs, Required:
None.
Outputs, Optional:
None.
The Manufacturer Assigned operation requested list is defined in clause 5.11.3a of TS 23.401 and clause 5.4.4.1a of TS 23.501.
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5.2.19  AF Services |R16|Word‑p. 648

5.2.19.1  General

The following table illustrates the AF Services.
NF service Service Operations Operation Semantics Example Consumer(s)
Naf_EventExposureSubscribeSubscribe/NotifyNEF, NWDAF
UnsubscribeNEF, NWDAF
NotifyNEF, NWDAF
Naf_ProSeAuthorizeDiscoveryRequest/Response5G DDNMF
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5.2.19.2  Naf_EventExposure service

5.2.19.2.1  General
Service description: This service enables consumer NF to subscribe and get notified of events.
The events can be subscribed by a NF consumer are described in TS 23.288.
The following service operations are defined for the Naf_EventExposure service:
  • Naf_EventExposure_Subscribe.
  • Naf_EventExposure_Unsubscribe.
  • Naf_EventExposure_Notify.
The following events can be subscribed by a NF consumer (Event ID is defined in clause 4.15.1):
Event Filters are used to specify the conditions to match for notifying the event (i.e. "List of Parameter values to match"). If there are no conditions to match for a specific Event ID, then the Event Filter is not provided. The following table provides some examples on how the conditions to match for event reporting can be specified for various Event IDs for AF exposure.
Event ID for AF exposure Event Filter (List of Parameter Values to Match)
Exceptions information<Parameter Type = Exception ID, Value = Exception ID1>
Service Experience information<Parameter Type = TAI, Value = TAI1>
Service Experience information <Parameter Type = geographical area,
Value = civic address1 or shape1>
Collective Behaviour information<Parameter Type = collective attribute,
Value = collective value1>
Collective Behaviour information<Parameter Type = data processing type,
Value = data processing type1>
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5.2.19.2.2  Naf_EventExposure_Subscribe service operationWord‑p. 649
Service operation name:
Naf_EventExposure_Subscribe
Description:
The consumer NF subscribes the event to collect AF data for UE(s), group of UEs, or any UE, or updates the subscription which is already defined in AF.
Input, Required:
Target of Event Reporting: either UE ID(s), or UE IP v4 address(es), or UE IP v6 prefix(es), or Internal/External Group Identifier, or indication that any UE is targeted, (set of) Event ID(s), Notification Target Address (+ Notification Correlation ID) and Event Reporting Information as defined in Table 4.15.1-1.
Input, Optional:
NF ID, Event Filter(s) associated with each Event ID, (set of) External Application Identifier(s), Subscription Correlation ID (in the case of modification of the existing subscription), Expiry time.
Output, Required:
Operation execution result indication. When the subscription is accepted: Subscription Correlation ID, Expiry time (required if the subscription can be expired based on the local policy).
Output, Optional:
First corresponding event report is included, if corresponding information is available (see clause 4.15.1).
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5.2.19.2.3  Naf_EventExposure_Unsubscribe service operation
Service operation name:
Naf_EventExposure_Unsubscribe
Description:
The consumer NF unsubscribes for a specific event.
Input, Required:
Subscription Correlation ID.
Input, Optional:
None.
Output, Required:
Operation execution result indication.
Output, Optional:
None.
5.2.19.2.4  Naf_EventExposure_Notify service operation
Service operation name:
Naf_EventExposure_Notify
Description:
The AF provides the previously subscribed event information to the consumer NF which has subscribed to that event before.
Input, Required:
Notification Correlation Information, Event ID, corresponding UE ID(s) (either external UE ID(s), or Internal/External Group Identifier, or UE IP v4 address(es) or UE IP v6 prefix(es), time stamp.
Input, Optional:
Event specific parameter list.
Output, Required:
None.
Output, Optional:
None.

5.2.19.3  Naf_ProSe service |R17|Word‑p. 650

5.2.19.3.1  General
Service description:
This service enables consumer NF to request authorization for Discovery Request.
5.2.19.3.2  Naf_ProSe_AuthorizeDiscovery service operation
Service operation name:
Naf_ProSe_AuthorizeDiscovery
Description:
Authorize Discovery Request from the consumer NF.
Input, Required:
ProSe Application ID, Request Type.
Input, Optional:
Application Level Container, Allowed number of suffixes, RPAUID, Target RPAUID.
Output, Required:
ProSe Application Code Suffix pool, Response Type, PDUID(s), Target PDUID.
Output, Optional:
Mask(s) for the ProSe Application Code Suffix(es) corresponding to ProSe Application ID, N sets of Target PDUID - Target RPAUID - Metadata Indicator.
See clause 6.3.1 of TS 23.304, for examples of usage of this service operation.
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5.2.20  NSSAAF services |R16|

5.2.20.1  General

The following table illustrates the NSSAAF Services.
NF service Service Operations Operation Semantics Example Consumer(s)
Nnssaaf_NSSAAAuthenticateRequest/ResponseAMF
Re-AuthenticationNotificationNotifyAMF
RevocationNotificationNotifyAMF
Nnssaaf_AIWAuthenticateRequest/ResponseAUSF
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5.2.20.2  Nnssaaf_NSSAA service

5.2.20.2.1  General
Service Description:
The NSSAAF provides Network Slice- Specific Authentication and Authorization (NSSAA) service to the requester NF by relaying EAP messages towards a AAA-S or AAA-P and performing related protocol conversion as needed. It also provides notification to the current AMF where the UE is of the need to re-authenticate and re-authorize the UE or to revoke the UE authorization. The AMF to receive the notification is implicitly subscribed and it is found in the UDM by providing the UE GPSI.
5.2.20.2.2  Nnssaaf_NSSAA_Authenticate service operation
See TS 33.501.
5.2.20.2.3  Nnssaaf_NSSAA_Re-AuthenticationNotification service operation
See TS 33.501.
5.2.20.2.4  Nnssaaf_NSSAA_RevocationNotification service operationWord‑p. 651
See TS 33.501.

5.2.20.3  Nnssaaf_AIW service |R17|

5.2.20.3.1  General
Service Description:
The NSSAAF provides Authentication and Authorization service to the requester NF by relaying EAP messages towards a AAA-S or AAA-P and performing related protocol conversion as needed.
5.2.20.3.2  Nnssaaf_AIW_Authenticate service operation
See TS 33.501.

5.2.21  NSACF services |R17|

5.2.21.1  General

The following table illustrates the NSACF services.
Service Name Service Operations Operation Semantics Example Consumer(s)
Nnsacf_NSACNumOfUEsUpdateRequest/ResponseAMF, SMF (NOTE 1)
NumOfPDUsUpdateSMF
EACNotifyAMF
Nnsacf_SliceEventExposureSubscribeSubscribe/NotifyNEF, AF (NOTE 2)
UnsubscribeNEF, AF
NotifyNEF, AF
Nnsacf_SliceStatusRetrievalRequest/ResponseNEF, AF
NOTE 1:
If EPS counting is required for the S-NSSAI, the SMF+PGW-C uses the Nnsacf_NumberOfUEs services operation at PDN connection establishment procedure.
NOTE 2:
The AF can access NSACF services either via NEF to NSACF in case of untrusted AF or directly in case of trusted AF.
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5.2.21.2  Nnsacf_NSAC services

5.2.21.2.1  General
Service Description:
The Nnsacf_NSAC services control the number of UEs registered with a network slice and the number of PDU Sessions associated with a network slice for the network slices subject to NSAC. The consumer NF (e.g. AMF) can request the NSACF to check whether the number of UEs registered with a network slice has reached the maximum number of UEs per network slice and the consumer NF can also request the NSACF to update the number of UEs registered with a network slice. The SMF can request the NSACF to check whether the number of PDU Sessions established on a network slice has reached the maximum number of PDU Sessions per network slice and the SMF can also request the NSACF to update the number of PDU Sessions established on a network slice.
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5.2.21.2.2  Nnsacf_NSAC_NumOfUEsUpdate service operation
Service Operation name:
Nnsacf_NSAC_NumOfUEsUpdate
Description:
Updates the number of UEs registered with a network slice (e.g. increase or decrease) when the UE registration status for a network slice subject to NSAC has changed. Also, if the number of the UEs registered with the network slice is to be increased and the Early Availability Check (EAC) mode in the NSACF is activated for that network slice (see Nnsacf_NSAC_EACNotify service operation), the NSACF first checks whether the number of UEs registered with the network slice has reached the maximum number of UEs per network slice threshold. If the maximum number of UEs registered with the network slice has already been reached, the UE registration for that network slice is rejected. If the EAC is not activated, the NSACF increases or decreases the number of UEs per network slice as per the input parameters below.
Inputs, Required:
S-NSSAI(s), UE ID (SUPI), NF ID, access type, update flag.
Inputs, Conditional:
Notification endpoint for EAC Notification for the S-NSSAI.
The S-NSSAI(s) parameter is a list of one or more network slices for which the number of UEs registered with a network slice is to be updated and checked if the maximum number of UEs per network slice threshold has already been reached.
The UE ID is used by the NSACF to maintain a list of UE IDs registered with the network slice. The NSACF also takes access type into account for increasing and decreasing the number of UEs per network slice as described in clause 5.15.11.1 of TS 23.501.
The NF ID parameter is the NF instance ID of the NF (e.g. AMF or SMF + PGW-C) sending the request to the NSACF.
The update flag input parameter indicates whether the number of UEs registered with a network slice is to be:
  • increased when the UE registers to a new network slice subject to NSAC. If the UE ID is already in the list of UEs registered with the network slice, the number of UEs registered with the network slice is not increased as the UE has already been counted as registered with the network slice. If the UE ID is not in the list of UE IDs registered with the network slice and the maximum number of UEs registered with the network slice has not been reached yet, the NSACF adds the UE ID in the list of UEs registered with the network slice and increases the number of the UEs registered with the network slice. If the UE_ID is not in the list of UEs registered with that S-NSSAI and the maximum number of UEs per network slice for that S-NSSAI has already been reached, then the NSACF returns maximum number of UEs per network slice reached result;
  • decreased when the UE deregisters for a network slice that is subject to NSAC. The NSACF decreases the number of the UEs registered with the network slice and removes the UE ID from the list of UEs registered with the network slice.
If this is the first time to perform NSAC procedure for the S-NSSAI towards the NSACF, the AMF includes notification endpoint for EAC Notification to implicitly subscribe the EAC notification for the S-NSSAI from the NSACF.
The NSACF may optionally return the current status of the network slice availability (e.g. a percentage out of the maximum number of UEs registered with a network slice) in the availability status parameter. This information may be used for NSACF signalling and load balancing in case multiple NSACFs are serving the same network slice.
Outputs, Required:
maximum number of UEs per network slice reached, availability status.
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5.2.21.2.3  Nnsacf_NSAC_EACNotify service operationWord‑p. 652
Service Operation name:
Nnsacf_NSAC_EACNotify
Description:
The NSACF is configured with the information about which network slices are subject to NSAC. The NSACF may trigger notification to the consumer NF (e.g. AMF) to indicate the activation of the Early Availability Check (EAC) mode for a certain network slice which is subject to NSAC when the number of the UEs registered with the network slice is above certain operator defined threshold (e.g. a percentage of the maximum number of UEs allowed to register with the network slice) and the deactivation of the EAC mode when the number of the UEs registered with the network slice is below certain operator defined threshold which may be same or different from the activation threshold.
Inputs, Required:
S-NSSAI, EAC flag.
The S-NSSAI input parameter is the network slice for which the NSACF activates or deactivates the EAC mode.
The EAC flag input parameter indicates whether the Slice EAC mode is activated or deactivated.
Inputs, Optional:
None.
Output, Required:
None.
Output, Optional:
None.
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5.2.21.2.4  Nnsacf_NSAC_NumOfPDUsUpdate service operationWord‑p. 653
Service Operation name:
Nnsacf_NSAC_NumOfPDUsUpdate
Description:
Updates the number of PDU Sessions established on a network slice (e.g. increase or decrease). Also, if the number of PDU Sessions on the network slice is to be increased, the NSACF first checks whether the number of the PDU Sessions on that network slice has reached the maximum number of PDU Sessions per network slice threshold. If the maximum number of PDU Sessions on the network slice has already been reached, the PDU Session Establishment procedure is rejected.
Inputs, Required:
S-NSSAI, UE ID, PDU Session ID, update flag.
The S-NSSAI parameter is the network slice for which the number of PDU Sessions established on a network slice is to be updated.
The UE ID is used by the NSACF to maintain a list of UE IDs that has established PDU sessions with the network slice.
PDU Session ID is used by the NSACF to maintain for each UE ID, the PDU Session ID(s) for established PDU Sessions.
The update flag input parameter indicates whether the number of the PDU Sessions established on that network slice is to be increased, for example at PDU Session Establishment procedure, or decreased, for example at PDU Session Release procedure.
Inputs, Optional:
None.
Outputs, Required:
maximum number of PDU Sessions per network slice reached, availability status
Outputs, Optional:
None.
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5.2.21.3Void

5.2.21.4  Nnsacf_SliceEventExposure services

5.2.21.4.1  General
Service Description:
The Nnsacf_SliceEventExposure services provide event based notifications to the consumer NF related to the current number of UEs registered for a network slice or/and the current number of PDU Sessions established on a network slice.
5.2.21.4.2  Nnsacf_SliceEventExposure_Subscribe service operation
Service operation name:
Nnsacf_SliceEventExposureSubscribe
Description:
This service operation is used by the consumer NF to subscribe or modify a subscription with the NSACF for event based notifications of the current number of UEs registered for a network slice or the current number of PDU Sessions established on a network slice or both.
Inputs, Required:
Event ID, Event Filter, Event Reporting information.
The Event ID parameter defines whether to notify the number of UEs registered with a network slice or the number of PDU Sessions established on a network slice or both.
The Event Filter parameter is the S-NSSAI for which the current number of UEs registered for a network slice or the current number of PDU Sessions established on a network slice or both are to be notified to the consumer NF.
The Event Reporting information parameter defines whether the notification is threshold based (e.g. the notification is triggered when the current number of UEs or PDU Sessions with a network slice reaches a defined threshold value) or the notification is periodical (e.g. the notification is triggered at expiry of a periodic timer).
Inputs, Optional:
Notification threshold, Notification periodicity.
The Notification threshold parameter is optional. It is provided when the Notification is threshold base. The notification threshold parameter may be a numeric value or a percentage of the maximum number of the UEs or PDU Sessions per network slice.
The Notification periodicity parameter is optional. It is provided when the Notification is periodical. The Notification periodicity parameter defines the time between the notification periodicity.
Outputs, Required:
Operation execution result response, Subscription Correlation Id.
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5.2.21.4.3  Nnsacf_SliceEventExposure_Unsubscribe service operationWord‑p. 654
Service operation name:
Nnsacf_SliceEventExposure_Unsubscribe
Description:
This service operation is used by the consumer NF to unsubscribe from the event notification.
Inputs, Required:
Subscription Correlation Id.
Outputs, Required:
Operation execution result response.
5.2.21.4.4  Nnsacf_SliceEventExposure_Notify service operation
Service operation name:
Nnsacf_SliceEventExposure_Notify
Description:
This service operation is used by the NSACF to report the current number of UEs registered with a network slice or the current number of PDU Sessions established on a network slice in numbers or in percentage from the maximum allowed numbers, based on threshold or at expiry of periodic timer.
Inputs, Required:
Event ID, Event Filter, Event Reporting information, Notification Correlation Information.
The Event ID parameter defines the type of the reported information, i.e. the number of UEs registered with a network slice or the number of PDUs Sessions established on a network slice or both.
The Event Filter parameter is the S-NSSAI for which the Notification applies.
The Event Reporting information parameter provides the network slice status information in terms of the current number of UEs registered with a network slice or the current number of PDU Sessions established on a network slice or both. If the Notification is threshold based where the threshold is a certain number of UEs registered with a network slice or PDU Sessions established on a network slice or the threshold is a percentage of the maximum number of UEs registered with a network slice or the maximum number of PDU Sessions established on a network slice, the Event Reporting information parameter contains confirmation for reaching this threshold value. If the Notification is periodical, the Event Reporting information parameter provides information for the current number of UEs registered with a network slice (e.g. represented in percentage of the maximum number of the UEs registered with the network slice) or information for the current number of PDU Sessions established on a network slice (e.g. represented in percentage of the maximum number of the PDU Sessions established on the network slice) or both with periodicity provided during the subscription.
Outputs, Required:
None.
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5.2.21.5  Nnsacf_SliceStatus services

5.2.21.5.1  General
Service Description:
The Nnsacf_SliceStatus services provide network slice status information on request from the consumer NF (e.g. AF via NEF) related to the current number of UEs registered with a network slice or the current number of PDU Sessions established on a network slice or both.
5.2.21.5.2  Nnsacf_SliceStatus_Retrieval service operationWord‑p. 655
Service operation name:
Nnsacf_SliceStatus_Retrieval
Description:
This service operation is used by the consumer NF to retrieve the network slice status information related to the number of UEs registered for a network slice or the number of PDU Sessions established on a network slice or both.
Inputs, Required:
Event ID, Event Filter.
The Event ID parameter defines whether the requested information is about the number of UEs registered with a network slice or the number of PDU Sessions established on a network slice or both.
The Event Filter parameter is the S-NSSAI for which the requested information is applicable.
Outputs, Required:
Event ID, Event Filter, Event Reporting information.
The Event ID parameter defines the type of the reported information, i.e. information about the number of UEs registered with a network slice or the number of PDUs Sessions established on a network slice or both.
The Event Filter parameter is the S-NSSAI for which the information retrieval is applicable.
The Event Reporting information parameter provides information for the current number of UEs registered with a network slice (e.g. represented in percentage of the maximum number of the UEs registered with the network slice) or information for the current number of PDU Sessions established on a network slice (e.g. represented in percentage of the maximum number of the PDU Sessions established on the network slice) or both.
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5.2.22  DCCF Services |R17|

The DCCF services are defined in TS 23.288.

5.2.23  MFAF Services |R17|

The MFAF services are defined in TS 23.288.

5.2.24  ADRF Services |R17|

The ADRF services are defined in TS 23.288.

5.2.25  EASDF Services |R17|

EASDF services are defined in clause 7.1 of TS 23.548.

5.2.26  UPF Services |R17|

5.2.26.1  General

The following Table shows the UPF Services and UPF Service Operations.
Service Name Service Operations Operation Semantics Example Consumer(s)
Nupf_EventExposureNotifySubscribe/NotifyNEF, AF
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5.2.26.2  Nupf_EventExposure ServiceWord‑p. 656

5.2.26.2.1  General
Service description:
This service can expose UPF related information to other NFs. There is one operation for this service:
  • Notifying events on the PDU Session to the NFs.
The following events can be notified to a NF consumer:
The event notification may contain following information:
  • QoS monitoring result e.g. end to end delay for specific QoS flow or for specific PDU session.
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5.2.26.2.2  Nupf_EventExposure_Notify service operation
Service operation name:
Nupf_EventExposure_Notify
Description:
This service operation reports the event and information to the consumer that has subscribed implicitly.
Input Required:
Event ID, UE address (i.e. IP address or MAC address).
Input, Optional:
Event specific parameter as described in clause 5.2.26.2.1.
Output Required:
Result Indication.
Output, Optional:
None.

5.2.27  TSCTSF Services |R17|

5.2.27.1  General

The following Table shows the TSCTSF Services and Service Operations:
Service Name Service Operations Operation Semantics Example Consumer(s)
Ntsctsf_TimeSynchronizationConfigUpdateRequest/ResponseAF, NEF
ConfigCreateRequest/ResponseAF, NEF
ConfigDeleteRequest/ResponseAF, NEF
ConfigUpdateNotifySubscribe/NotifyAF, NEF
CapsSubscribeSubscribe/NotifyAF, NEF
CapsUnsubscribeSubscribe/NotifyAF, NEF
CapsNotifySubscribe/NotifyAF, NEF
ASTICreateRequest/ResponseAF, NEF
ASTIUpdateRequest/ResponseAF, NEF
ASTIDeleteRequest/ResponseAF, NEF
ASTIGetRequest/ResponseAF, NEF
Ntsctsf_QoSandTSCAssistanceCreateRequest/ResponseAF, NEF
UpdateRequest/ResponseAF, NEF
DeleteRequest/ResponseAF, NEF
NotifySubscribe/NotifyAF, NEF
SubscribeSubscribe/NotifyAF, NEF
UnsubscribeSubscribe/NotifyAF, NEF
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5.2.27.2  Ntsctsf_TimeSynchronization serviceWord‑p. 657

5.2.27.2.1  General
Service description:
This service provides:
  • Request authorization of NF Service Consumer requests.
  • NF Service Consumer request to create and update time synchronization configuration for a PTP instance and to activate and deactivate the time synchronization service as described in clause 5.27.1.8 of TS 23.501.
5.2.27.2.2  Ntsctsf_TimeSynchronization_ConfigCreate operation
Service operation name:
Ntsctsf_TimeSynchronization_ConfigCreate
Description:
Authorize the request, create a time synchronization configuration and activate the time synchronization service with the configuration.
Inputs, Required:
Reference to time synchronization capability set (i.e. the Subscription Correlation ID as in the response to Ntsctsf_TimeSynchronization_CapsSubscribe request), user plane node ID, mandatory service parameters as described in Table 4.15.9.3-1, Notification Target Address.
Inputs, Optional:
Optional service parameters as described in Table 4.15.9.3-1.
Outputs, Required:
Operation execution result indication, in successful operation the PTP instance ID.
Outputs, Optional:
None.
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5.2.27.2.3  Ntsctsf_TimeSynchronization_ConfigUpdate operation
Service operation name:
Ntsctsf_TimeSynchronization_ConfigUpdate
Description:
Authorize the request and forward the request to update the time synchronization configuration.
Inputs, Required:
PTP instance ID.
Inputs, Optional:
List of UE identities (SUPIs) to be added to the time synchronization configuration. (g)PTP grandmaster enabled, grandmaster priority, Time Domain, Temporary Validity Condition as described in Table 4.15.9.3-1.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
5.2.27.2.4  Ntsctsf_ TimeSynchronization_ConfigDelete operation
Service operation name:
Ntsctsf_TimeSynchronization_ConfigDelete
Description:
Authorize the request, delete the time synchronization configuration and deactivate the corresponding time synchronization service.
Inputs, Required:
PTP instance ID.
Inputs, Optional:
None.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
5.2.27.2.5  Ntsctsf_ TimeSynchronization_ConfigUpdateNotify operation
Service operation name:
Ntsctsf_ TimeSynchronization_ConfigUpdateNotify
Description:
Forward the notification for the time synchronization configuration.
Inputs, Required:
PTP instance ID.
Inputs, Optional:
Current state of the time synchronization configuration.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
5.2.27.2.6  Ntsctsf_TimeSynchronization_CapsSubscribe operationWord‑p. 658
Service operation name:
Ntsctsf_TimeSynchronization_CapsSubscribe
Description:
The AF subscribes to receive notification about time synchronization capabilities for a list of UE(s) using DNN/S-NSSAI combination.
Inputs, Required:
Combination of (DNN, S-NSSAI), Notification Target Address and Notification Correlation ID.
Inputs, Optional:
Event Filter(s) as described in Table 5.2.6.25.6-1, Report Type (can be either one-time reporting, periodic reporting or event based reporting).
Outputs, Required:
Operation execution result indication. When the subscription is accepted: Subscription Correlation ID, Expiry time.
Outputs, Optional:
None.
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5.2.27.2.7  Ntsctsf_TimeSynchronization_CapsUnsubscribe operation
Service operation name:
Ntsctsf_TimeSynchronization_CapsUnsubscribe
Description:
The AF unsubscribes to receive notification about time synchronization for a UE or a DNN/S-NSSAI combination.
Inputs, Required:
Subscription Correlation ID.
Inputs, Optional:
None.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
5.2.27.2.8  Ntsctsf_TimeSynchronization_CapsNotify operation
Service operation name:
Ntsctsf_TimeSynchronization_CapsNotify
Description:
Forward the notification for the time synchronization configuration.
Inputs, Required:
Notification Correlation ID.
Inputs, Optional:
Time synchronization capabilities as described in Table 5.2.6.25.8-1.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
5.2.27.2.9  Ntsctsf_TimeSynchronization_ASTICreate operation
Service operation name:
Ntsctsf_TimeSynchronization_ASTICreate
Description:
Authorize the request, activate the 5G access stratum time distribution.
Inputs, Required:
List of UE identities, mandatory service parameters as described in Table 4.15.9.4-1.
Inputs, Optional:
DNN, S-NSSAI, optional service parameters as described in Table 4.15.9.4-1.
Outputs, Required:
Operation execution result indication, in successful operation the time synchronization configuration id.
Outputs, Optional:
None.
5.2.27.2.10  Ntsctsf_TimeSynchronization_ASTIUpdate operationWord‑p. 659
Service operation name:
Ntsctsf_TimeSynchronization_ASTIUpdate
Description:
Authorize the request and forward the request to update the 5G access stratum time distribution configuration.
Inputs, Required:
Time synchronization configuration id.
Inputs, Optional:
service parameters as in Ntsctsf_TimeSynchronization_ASTICreate input.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
5.2.27.2.11  Ntsctsf_TimeSynchronization_ASTIDelete operation
Service operation name:
Ntsctsf_TimeSynchronization_ASTIDelete
Description:
Authorize the request, delete the 5G access stratum time distribution configuration, deactivate the corresponding 5G access stratum time distribution service.
Inputs, Required:
Time synchronization configuration id.
Inputs, Optional:
None.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
None.
5.2.27.2.12  Ntsctsf_TimeSynchronization_ASTIGet operation
Service operation name:
Ntsctsf_TimeSynchronization_ASTIGet
Description:
Authorize the request and query the status of the access stratum time distribution.
Inputs, Required:
List of UE identities.
Inputs, Optional:
DNN, S-NSSAI.
Outputs, Required:
Operation execution result indication.
Outputs, Optional:
Status of the access stratum time distribution (active, optionally with requested time synchronization error budget or inactive).

5.2.27.3  Ntsctsf_QoSandTSCAssistance

5.2.27.3.1  General
Service description:
This service provides:
  • Request authorization of NF Service Consumer requests.
  • NF Service Consumer request to reserve or update resources for handling traffic characterized by TSC QoS parameters as described in clause 6.1.3.22 of TS 23.503.
5.2.27.3.2  Ntsctsf_QoSandTSCAssistance_Create operation
Service operation name:
Ntsctsf_QoSandTSCAssistance_Create
Description:
The consumer requests the network to provide a specific QoS for an AF session.
Inputs, Required:
AF Identifier, UE address, Flow description(s) or External Application Identifier, QoS Reference.
Inputs, Optional:
time period, traffic volume, Alternative Service Requirements (containing one or more QoS reference parameters in a prioritized order), QoS parameter(s) to be measured, Reporting frequency, Target of reporting as described in clause 6.1.3.21 of TS 23.503, Requested 5GS delay, priority, Requested GFBR, Requested MFBR, Flow Direction, Burst Size, Burst Arrival Time at UE (uplink) or UPF (downlink), Periodicity, Survival Time, Time domain, DNN if available, S-NSSAI if available, Alternative QoS Related parameter sets as described in clause 6.1.3.22 of TS 23.503.
Outputs, Required:
Transaction Reference ID, result.
Output (optional):
None.
5.2.27.3.3  Ntsctsf_QoSandTSCAssistance_Update operationWord‑p. 660
Service operation name:
Ntsctsf_QoSandTSCAssistance_Update
Description:
The consumer requests the network to update the QoS and/or additional Alternative QoS for an AF session.
Inputs, Required:
Transaction Reference ID.
Inputs, Optional:
Flow description, QoS reference, time period, traffic volume, Alternative Service Requirements (containing one or more QoS reference parameters in a prioritized order), QoS parameter(s) to be measured, Reporting frequency, Target of reporting as described in clause 6.1.3.21 of TS 23.503, Requested 5GS delay, priority, Requested GFBR, Requested MFBR, Flow Direction, Burst Size, Burst Arrival Time at UE (uplink) or UPF (downlink), Periodicity, Time domain, Survival Time, Alternative QoS Related parameter sets.
Outputs, Required:
Result.
Output (optional):
None.
5.2.27.3.4  Ntsctsf_QoSandTSCAssistance_Delete operation
Service operation name:
Ntsctsf_QoSandTSCAssistance_Delete
Description:
The consumer requests the network to delete the AF session with requested QoS or the AF session with requested QoS including Alternative Service Requirements.
Inputs, Required:
Transaction Reference ID.
Inputs, Optional:
None.
Outputs, Required:
Transaction Reference ID, result.
Output (optional):
None.
5.2.27.3.5  Ntsctsf_QoSandTSCAssistance_Notify operation
Service operation name:
Ntsctsf_QoSandTSCAssistance_Notify
Description:
NEF reports the QoS Flow level event(s) to the consumer.
Inputs, Required:
Reports of the events as defined in clause 6.1.3.18 of TS 23.503.
Inputs, Optional:
When the event report is for QoS Monitoring for URLLC, includes Packet delay for UL, DL, or round trip of the single UP path or two UP paths in the case of redundant transmission, as defined in clause 5.33.3.2 of TS 23.501.
Outputs, Required:
None.
Output (optional):
None.
5.2.27.3.6  Ntsctsf_QoSandTSCAssistance_Subscribe operationWord‑p. 661
Service operation name:
Ntsctsf_QoSandTSCAssistance_Subscribe
Description:
The consumer requests the network to subscribe to receive an event about the AF session with requested QoS or the AF session with requested QoS including Alternative Service Requirements.
Inputs, Required:
Transaction Reference ID, (Set of) Event ID(s) as specified in clause 6.1.3.18 of TS 23.503.
Inputs, Optional:
None.
Outputs, Required:
Transaction Reference ID, result.
Output (optional):
None.
5.2.27.3.7  Ntsctsf_QoSandTSCAssistance_Unsubscribe operation
Service operation name:
Ntsctsf_QoSandTSCAssistance_unsubscribe
Description:
The consumer requests the network to unsubscribe to receive an event about the AF session with requested QoS or the AF session with requested QoS including Alternative Service Requirements.
Inputs, Required:
Transaction Reference ID, (Set of) Event ID(s) as specified in clause 6.1.3.18 of TS 23.503.
Inputs, Optional:
None.
Outputs, Required:
Transaction Reference ID, result.
Output (optional):
None.

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