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full Contents for  TS 23.502  Word version:   16.4.0

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1…   4.2.2.2.2   4.2.2.2.3…   4.2.3…   4.2.3.3   4.2.4…   4.2.6   4.2.7…   4.2.9…   4.3…   4.3.2.2…   4.3.2.2.2   4.3.2.2.3…   4.3.3   4.3.4   4.3.5…   4.3.5.2…   4.3.5.4…   4.3.5.6…   4.3.6…   4.4…   4.5…   4.9…   4.9.1.3…   4.9.2…   4.11…   4.11.1.2.2…   4.11.1.3…   4.11.1.4…   4.11.1.5…   4.11.2   4.11.3…   4.12…   4.12.6…   4.12a   4.12b   4.13…   4.13.4…   4.13.6…   4.14…   4.15…   4.15.4…   4.16…   4.16.4…   4.16.8…   4.17…   4.17.9…   4.18…   4.19…   4.23…   4.23.7…   4.23.9…   4.23.11…   4.24   4.25   4.26…   5…   5.2.3…   5.2.5…   5.2.6…   5.2.7…   5.2.8…   5.2.9…   5.2.12…   A…   E…   F…

 

5.2.3  UDM Services
5.2.3.1  General
The following table illustrates the UDM Services and Service Operations.
NF service
Service Operations
Operation Semantics
Example Consumer(s)

Subscriber Data Management (SDM)
Get
Request/Response
AMF, SMF, SMSF, NEF
Subscribe
Subscribe/Notify
AMF, SMF, SMSF, NEF
Unsubscribe
Subscribe/Notify
AMF, SMF, SMSF, NEF
Notification
Subscribe/Notify
AMF, SMF, SMSF, NEF, GMLC
Info
Request/Response
AMF, NEF
UE Context Management (UECM)
Registration
Request/Response
AMF, SMF, SMSF
DeregistrationNotification
Subscribe/Notify
AMF
Deregistration
Request/Response
AMF, SMF, SMSF
Get
Request/Response
NEF, SMSF, GMLC, NWDAF
Update
Request/Response
AMF, SMF
PCscfRestoration
Subscribe/Notify
AMF, SMF
UE Authentication
Get
Request/Response
AUSF
ResultConfirmation
Request/Response
AUSF
EventExposure
Subscribe
Subscribe/Notify
NEF (NOTE), NWDAF
Unsubscribe
NEF (NOTE), NWDAF
Notify
NEF (NOTE), NWDAF
Parameter Provision
Update
Request/Response
NEF, AMF
Create
Request/Response
NEF
Delete
Request/Response
NEF
Get
Request/Response
NEF
NIDDAuthorisation
Get
Request/Response
NEF
UpdateNotify
Subscribe/Notify
NEF

NOTE:
Other NFs are allowed to consume the service based on roaming agreement or operator policy.

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5.2.3.2  Nudm_UECM (UECM) serviceWord-p. 457
5.2.3.2.1  Nudm_UECM_Registration service operation
Service operation name:
Nudm_UECM_Registration
Description:
Register UE's serving NF (if NF Type is AMF, SMSF) or Session's serving NF (if NF Type is SMF) on the UDM. This operation implies the following:
  • The authorization, if applicable, to register the NF service consumer in UDM for the UE (e.g. based on UE roaming/RAT restrictions applicable when NF type is AMF). If this is successful, the NF service consumer is set as a serving NF for the corresponding UE/Session context.
  • When the consumer is AMF or SMF, it is implicitly subscribed to be notified when it is deregistered in UDM. This notification is done by means of Nudm_UECM_DeregistrationNotification operation.
  • When the consumer is AMF or SMF, it may optionally use this operation to subscribe to be notified of the need for P-CSCF Restoration. This notification is done by means of Nudm_UECM_PCscfRestoration operation. For more information regarding P-CSCF restoration procedures see TS 23.380.
Inputs, Required:
NF ID, SUPI, PEI, NF Type, Access Type (if NF Type is AMF, SMSF), RAT Type (if NF Type is AMF), PDU Session ID (if NF Type is SMF). If NF Type is SMF: DNN or Indication of Emergency Services, S-NSSAI, PGW-C+SMF FQDN for S5/S8 if the PDU Session supports EPS interworking, Serving PLMN ID. If NF type is AMF and Access Type is 3GPP access: Registration type. If NF type is SMSF: SMSF MAP address and/or Diameter address, Serving PLMN ID.
Inputs, Optional:
P-CSCF Restoration notification information, GUAMI, NID (e.g. if NF Type is AMF; see clause 5.18 of TS 23.501), backup AMF(s) (if NF Type is AMF), "Homogeneous Support of IMS Voice over PS Sessions" indication (if NF Type is AMF), UE SRVCC capability (if NF Type is AMF), indication that access is from ePDG (shall be sent if NF Type is SMF and PDU Session is setup via S2b), VGMLC ID (if NF type is AMF and information is available in AMF). Backup AMF(s) sent only once by the AMF to the UDM in its first interaction with the UDM.
Outputs, Required:
Result indication.
Outputs, Optional:
None.
See step 14a of clause 4.2.2.2.2 for an example usage of this service operation.
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5.2.3.2.2  Nudm_UECM_DeregistrationNotification service operation
Service operation name:
Nudm_UECM_DeregistrationNotification.
Description:
UDM notifies the NF consumer which has previously registered (using Nudm_UECM_Registration operation) has been deregistered in the UDM. As a result, the consumer is no longer registered in UDM as a serving NF for that UE.
NOTE:
This notification corresponds to an implicit subscription.
Inputs, Required:
SUPI, Access Type, PDU Session ID, serving NF deregistration reason.
Inputs, Optional:
NF ID in the case of SM Context Transfer.
Outputs, Required:
None.
Outputs, Optional:
None.
See step 14d of clauses 4.2.2.2.2 and 4.26.5.3 for an example usage of this service operation. The serving NF deregistration reason tells the reason for sending the deregistration notification to the consumer NF.
The reason for AMF deregistration can be one of the following:
  • UE Initial Registration.
  • UE Registration area change.
  • Subscription Withdrawn.
  • 5GS to EPS Mobility.
The reason for SMF deregistration can be one of the following:
  • SMF Context Transfer.
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5.2.3.2.3  Nudm_UECM_Deregistration service operationWord-p. 458
Service operation name:
Nudm_UECM_Deregistration.
Description:
The NF consumer requests the UDM to delete the information related to the NF in the UE context. When the consumer is AMF, this implies that the subscriptions to be notified when the NF is deregistered in UDM (i.e. Nudm_UECM_DeregistrationNotification) are also removed.
Inputs, Required:
SUPI, NF type, Access Type, PDU Session Id (if NF Type is SMF).
  • Access Type is included only when the NF type indicates AMF or SMSF.
Inputs, Optional:
None.
Outputs, Required:
Result Indication.
Outputs, Optional:
None.
5.2.3.2.4  Nudm_UECM_Get service operation
Service operation name:
Nudm_UECM_Get.
Description:
The NF consumer requests the UDM to get the NF ID or SMS address of the NF serving the UE.
Inputs, Required:
UE ID, NF Type, Access Type.
  • Access Type is included only when the NF type indicates AMF or SMSF.
Inputs, Optional:
None.
Outputs, Required:
SUPI, NF ID or SMS address of the NF corresponding to the NF type requested by NF consumer.
Outputs, Optional:
None.
5.2.3.2.5  Nudm_UECM_Update service operation
Service operation name:
Nudm_UECM_Update.
Description:
Consumer updates some UE related information (e.g. UE capabilities, Intersystem continuity context, PGW-C+SMF FQDN for S5/S8 interface).
Inputs, Required:
NF ID, SUPI, NF type, UE context information.
Inputs, Optional:
"Homogeneous Support of IMS Voice over PS Sessions" indication (if NF Type is AMF), PGW-C+SMF FQDN for S5/S8 interface (if NF Type is SMF).
Outputs, Required:
Result Indication.
Outputs, Optional:
None.
5.2.3.2.6  Nudm_UECM_PCscfRestoration service operation
Service operation name:
Nudm_UECM_PCscfRestoration.
Description:
UDM notifies the AMF and/or SMF(s) which indicated during registration in UDM to be notified of the need for P-CSCF Restoration.
Inputs, Required:
SUPI.
Inputs, Optional:
None.
Outputs, Required:
None.
Outputs, Optional:
None.
5.2.3.3  Nudm_SubscriberDataManagement (SDM) ServiceWord-p. 459
5.2.3.3.1  General
Subscription data types used in the Nudm_SubscriberDataManagement Service are defined in Table 5.2.3.3.1-1 below.
Subscription data type
Field
Description

Access and Mobility Subscription data (data needed for UE Registration and Mobility Management)
GPSI List
List of the GPSI (Generic Public Subscription Identifier) used both inside and outside of the 3GPP system to address a 3GPP subscription.
Internal Group ID-list
List of the subscribed internal group(s) that the UE belongs to.
Subscribed-UE-AMBR
The Maximum Aggregated uplink and downlink MBRs to be shared across all Non-GBR QoS Flows according to the subscription of the user.
Subscribed S-NSSAIs
The Network Slices that the UE subscribes to. In the roaming case, it indicates the subscribed Network Slices applicable to the Serving PLMN.
Default S-NSSAIs
The Subscribed S-NSSAIs marked as default S-NSSAI. In the roaming case, only those applicable to the Serving PLMN.
S-NSSAIs subject to Network Slice-Specific Authentication and Authorization
The Subscribed S-NSSAIs marked as subject to NSSAA.
UE Usage Type
RAT restriction
3GPP Radio Access Technology(ies) not allowed the UE to access.
Forbidden area
Defines areas in which the UE is not permitted to initiate any communication with the network.
Service Area Restriction
Indicates Allowed areas in which the UE is permitted to initiate communication with the network, and Non-allowed areas in which the UE and the network are not allowed to initiate Service Request or SM signalling to obtain user services.
Core Network type restriction
Defines whether UE is allowed to connect to 5GC and/or EPC for this PLMN.
CAG information
The CAG information includes Allowed CAG list and, optionally an indication whether the UE is only allowed to access 5GS via CAG cells as defined in TS 23.501, clause 5.30.3.
CAG information Subscription Change Indication
When present, indicates to the serving AMF that the CAG information in the subscription data changed and the UE must be updated.
RFSP Index
An index to specific RRM configuration in the NG-RAN.
Subscribed Periodic Registration Timer
Indicates a subscribed Periodic Registration Timer value.
MPS priority
Indicates the user is subscribed to MPS as indicated in TS 23.501, clause 5.16.5.
MCX priority
Indicates the user is subscribed to MCX as indicated in TS 23.501, clause 5.16.6.
AMF-Associated Expected UE Behaviour parameters
Information on expected UE movement and communication characteristics. See clause 4.15.6.3
AMF-Associated Network Configuration parameters
Information on UE specific network configuration parameters and their corresponding validity times. See clause 4.15.6.3a.
Steering of Roaming
List of preferred PLMN/access technology combinations or HPLMN indication that no change of the "Operator Controlled PLMN Selector with Access Technology" list stored in the UE is needed (see NOTE 3).
Optionally includes an indication that the UDM requests an acknowledgement of the reception of this information from the UE.
SoR Update Indicator for Initial Registration
An indication whether the UDM requests the AMF to retrieve SoR information when the UE performs Registration with NAS Registration Type "Initial Registration".
SoR Update Indicator for Emergency Registration
An indication whether the UDM requests the AMF to retrieve SoR information when the UE performs Registration with NAS Registration Type "Emergency Registration".
Network Slicing Subscription Change Indicator
When present, indicates to the serving AMF that the subscription data for network slicing changed and the UE configuration must be updated.
Tracing Requirements
Trace requirements about a UE (e.g. trace reference, address of the Trace Collection Entity, etc.) is defined in TS 32.421.
This information is only sent to AMF in the HPLMN or one of its equivalent PLMN(s).
Inclusion of NSSAI in RRC Connection Establishment Allowed
When present, it is used to indicate that the UE is allowed to include NSSAI in the RRC connection Establishment in clear text for 3GPP access.
Service Gap Time
Used to set the Service Gap timer for Service Gap Control (see TS 23.501, clause 5.31.16).
Subscribed DNN list
List of the subscribed DNNs for the UE (NOTE 1). Used to determine the list of LADN available to the UE as defined in clause 5.6.5 of TS 23.501.
UDM Update Data
Includes a set of parameters (e.g. updated Default Configured NSSAI and/or updated Routing Indicator) to be delivered from UDM to the UE via NAS signalling as defined in clause 4.20 (NOTE 3).
Optionally includes an indication that the UDM requests an acknowledgement of the reception of this information from the UE and an indication for the UE to re-register.
NB-IoT UE priority
Numerical value used by the NG-RAN to prioritise between UEs accessing via NB-IoT.
Enhanced Coverage Restriction
Specifies whether CE mode B is restricted for the UE, or both CE mode A and CE mode B are restricted for the UE, or both CE mode A and CE mode B are not restricted for the UE.
IAB-Operation allowed
Indicates that the subscriber is allowed for IAB-operation as specified in TS 23.501, clause 5.35.2.
Charging Characteristics
It contains the Charging Characteristics as defined in Annex A, clause A.1 of TS 32.256.
Extended idle mode DRX cycle length
Indicates a subscribed extended idle mode DRX cycle length value.

Slice Selection Subscription data (data needed for Slice Selection as described in clause 4.2.2.2.3 and in clause 4.11.0a.5)
Subscribed S-NSSAIs
The Network Slices that the UE subscribes to. In roaming case, it indicates the subscribed network slices applicable to the serving PLMN.
Default S-NSSAIs
The Subscribed S-NSSAIs marked as default S-NSSAI. In the roaming case, only those applicable to the Serving PLMN.
S-NSSAIs subject to Network Slice-Specific Authentication and Authorization
The Subscribed S-NSSAIs marked as subject to NSSAA.

UE context in AMF data
AMF
Allocated AMF for the registered UE. Include AMF address and AMF NF Id.
Access Type
3GPP or non-3GPP access through this AMF
Homogenous Support of IMS Voice over PS Sessions for AMF
Indicates per UE and AMF if "IMS Voice over PS Sessions" is homogeneously supported in all TAs in the serving AMF or homogeneously not supported, or, support is non-homogeneous/unknown, see clause 5.16.3.3 of TS 23.501.
URRP-AMF information
UE Reachability Request Parameter indicating that UE reachability notification from AMF has been subscribed by the UDM. The information is per UE and should be kept even when the contexts related to a specific AMF is removed.

SMF Selection Subscription data (data needed for SMF Selection as described in clause 6.3.2 of TS 23.501)
SUPI
Key

SMF Selection Subscription data contains one or more S-NSSAI level subscription data:
S-NSSAI
Indicates the value of the S-NSSAI.
Subscribed DNN list
List of the subscribed DNNs for the UE (NOTE 1).
Default DNN
The default DNN if the UE does not provide a DNN (NOTE 2).
LBO Roaming Information
Indicates whether LBO roaming is allowed per DNN, or per (S-NSSAI, subscribed DNN).
Interworking with EPS indication list
Indicates whether EPS interworking is supported per (S-NSSAI, subscribed DNN).
Same SMF for Multiple PDU Sessions to the same DNN and S-NSSAI
Indication whether the same SMF for multiple PDU Sessions to the same DNN and S-NSSAI is required.
Invoke NEF indication
When present, indicates, per S-NSSAI and per DNN, that NEF based infrequent small data transfer shall be used for the PDU Session (see NOTE 8).
SMF information for static IP address/prefix
When static IP address/prefix is used, this may be used to indicate the associated SMF information per (S-NSSAI, DNN).

UE context in SMF data
SUPI
Key.
PDU Session Id(s)
List of PDU Session Id(s) for the UE.

For emergency PDU Session Id:
Emergency Information
The PGW-C+SMF FQDN for emergency session used for interworking with EPC.

For each non-emergency PDU Session Id:
DNN
DNN for the PDU Session.
SMF
Allocated SMF for the PDU Session. Includes SMF IP Address and SMF NF Id.
PGW-C+SMF FQDN
The S5/S8 PGW-C+SMF FQDN used for interworking with EPS (see NOTE 5).

SMS Management Subscription data (data needed by SMSF for SMSF Registration)
SMS parameters
Indicates SMS parameters subscribed for SMS service such as SMS teleservice, SMS barring list
Trace Requirements
Trace requirements about a UE (e.g. trace reference, address of the Trace Collection Entity, etc.) is defined in TS 32.421.
This information is only sent to a SMSF in HPLMN.

SMS Subscription data (data needed in AMF)
SMS Subscription
Indicates subscription to any SMS delivery service over NAS irrespective of access type.

UE Context in SMSF data
SMSF Information
Indicates SMSF allocated for the UE, including SMSF address and SMSF NF ID.
Access Type
3GPP or non-3GPP access through this SMSF

Session Management Subscription data (data needed for PDU Session Establishment)
GPSI List
List of the GPSI (Generic Public Subscription Identifier) used both inside and outside of the 3GPP system to address a 3GPP subscription.
Internal Group ID-list
List of the subscribed internal group(s) that the UE belongs to.
Trace Requirements
Trace requirements about a UE (e.g. trace reference, address of the Trace Collection Entity, etc…) is defined in TS 32.421.
This information is only sent to a SMF in the HPLMN or one of its equivalent PLMN(s).

Session Management Subscription data contains one or more S-NSSAI level subscription data:
S-NSSAI
Indicates the value of the S-NSSAI.
Subscribed DNN list
List of the subscribed DNNs for the S-NSSAI (NOTE 1).

For each DNN in S-NSSAI level subscription data:
DNN
DNN for the PDU Session.
Frame Routes
Set of Frame Route information. A Frame Route refers to a range of IPv4 addresses / IPv6 Prefixes to associate with a PDU Session established on this (DNN, S-NSSAI).
See NOTE 4.
Allowed PDU Session Types
Indicates the allowed PDU Session Types (IPv4, IPv6, IPv4v6, Ethernet, and Unstructured) for the DNN, S-NSSAI. See NOTE 6.
Default PDU Session Type
Indicates the default PDU Session Type for the DNN, S-NSSAI.
Allowed SSC modes
Indicates the allowed SSC modes for the DNN, S-NSSAI.
Default SSC mode
Indicate the default SSC mode for the DNN, S-NSSAI.
Interworking with EPS indication
Indicates whether interworking with EPS is supported for this DNN and S-NSSAI.
5GS Subscribed QoS profile
The QoS Flow level QoS parameter values (5QI and ARP) for the DNN, S-NSSAI (see clause 5.7.2.7 of TS 23.501).
Charging Characteristics
It contains Charging Characteristics as defined in Annex A, clause A.1 of TS 32.255. This information, when provided, shall override any corresponding predefined information at the SMF.
Subscribed-Session-AMBR
The maximum aggregated uplink and downlink MBRs to be shared across all Non-GBR QoS Flows in each PDU Session, which are established for the DNN, S-NSSAI.
Static IP address/prefix
Indicate the static IP address/prefix for the DNN, S-NSSAI.
User Plane Security Policy
Indicates the security policy for integrity protection and encryption for the user plane.
PDU Session continuity at inter RAT mobility
Provides for this DDN, S-NSSAI how to handle a PDU Session when UE the moves to or from NB-IoT. Possible values are: maintain the PDU session; disconnect the PDU session with a reactivation request; disconnect PDU session without reactivation request; or to leave it to local VPLMN policy.
NEF Identity for NIDD
When present, indicates, per S-NSSAI and per DNN, the identity of the NEF to anchor Unstructured PDU Session. When not present for the S-NSSAI and DNN, the PDU session terminates in UPF (see NOTE 8).
NIDD information
Information such as External Group Identifier, External Identifier, MSISDN, or AF ID used for SMF-NEF Connection.
SMF-Associated Expected UE Behaviour parameters
Parameters on expected characteristics of a PDU Session their corresponding validity times as specified in clause 4.15.6.3.
SMF-Associated Network Configuration parameters
Parameters on expected PDU session characteristics their corresponding validity times as specified in clause 4.15.6.3a.
ATSSS information
Indicates whether MA PDU session establishment is allowed.
Secondary authentication indication
Indicates that whether the Secondary authentication/authorization is required for PDU Session Establishment as specified in clause 4.3.2.3.

Identifier translation
SUPI
Corresponding SUPI for input GPSI.
(Optional) MSISDN
Corresponding GPSI (MSISDN) for input GPSI (External Identifier). This is optionally provided for legacy SMS infrastructure not supporting MSISDN-less SMS. The presence of an MSISDN should be interpreted as an indication to the NEF that MSISDN shall be used to identify the UE when sending the SMS to the SMS-SC via T4.
GPSI
Corresponding GPSI for input SUPI and Application Port ID.

Intersystem continuity Context
(DNN, PGW FQDN) list
For each DNN, indicates the PGW-C+SMF which support interworking with EPC.
LCS privacy (data needed by GMLC)
LCS privacy profile data
Provides information for LCS privacy classes and Location Provacy Indication (LPI) as defined in clause 5.4.2 in TS 23.273
LCS mobile origination (data needed by AMF)
LCS Mobile Originated Data
When present, indicates to the serving AMF which LCS mobile originated services are subscribed as defined in clause 7.1 in TS 23.273.
UE reachability
UE reachability information
Provides, per PLMN, the list of NF IDs or the list of NF sets or the list of NF types authorized to request notification for UE's reachability (NOTE 7).
Steering of Roaming information
Steering of Roaming
List of preferred PLMN/access technology combinations or HPLMN indication that no change of the "Operator Controlled PLMN Selector with Access Technology" list stored in the UE is needed (see NOTE 3).
Optionally, it includes an indication that the UDM requests an acknowledgement of the reception of this information from the UE.

NOTE 1:
The Subscribed DNN list can include a wildcard DNN.
NOTE 2:
The default DNN shall not be a wildcard DNN.
NOTE 3:
The Steering of Roaming information and UDM Update Data are protected using the mechanisms defined in TS 33.501.
NOTE 4:
Frame Route(s) are defined in TS 23.501. Frame Route information may refer to a range of IPv4 addresses (an IPv4 address and an IPv4 address mask) and/or a range of IPv6 Prefixes (an IPv6 Prefix and an IPv6 Prefix length).
NOTE 5:
Depending on the scenario PGW-C FQDN may be for S5/S8, or for S2b (ePDG case).
NOTE 6:
The Allowed PDU Session Types configured for a DNN which supports interworking with EPC should contain only the PDU Session Type corresponding to the PDN Type configured in the APN that corresponds to the DNN.
NOTE 7:
Providing a list of NF types or a list of NF sets may be more appropriate for some deployments, e.g. in highly dynamic NF lifecycle management deployments.
NOTE 8:
For a S-NSSAI and a DNN, the "Invoke NEF Indication" shall be present in the SMF selection subscription data if and only if the "NEF Identity for NIDD" Session Management Subscription Data includes a NEF Identity. When the "NEF Identity for NIDD" Session Management Subscription Data includes a NEF Identity for a S-NSSAI and DNN, the "Control Plane Only Indicator" will always be set for PDU Sessions to this S-NSSAI and DNN (see TS 23.501, clause 5.31.4.1).

 
Subscription data type
Field
Description

Group Identifier translation
External Group Identifier
Identifies external group of UEs that the UE belongs to as defined in TS 23.682.
Internal Group Identifier
Identifies internal group of UEs that the UE belongs to as defined in TS 23.501.
SUPI list
Corresponding SUPI list for input External Group Identifier.
Group Data (NOTE 1)
Internal Group Identifier
Internal identifiers of the group of UEs that the Group Data belongs to.
5G VN group data
This optional information is used in the case of 5G VN related groups. It is defined in clause 4.15.6.3b.

NOTE 1:
Group Data within Group Subscription Data can be managed using the Shared Data feature defined in TS 29.503. In that case, Shared Data is identified using Shared Data identifier and can contain additional information than the one defined in this table.
At least a mandatory key is required for each Subscription Data Type to identify the corresponding data. Depending on the use case, for some Subscription Data Types it is possible to use one or multiple sub keys to further identify the corresponding data, as defined in Tables 5.2.3.3.1-3 and 5.2.3.3.1-4 below.
 
Subscription Data Types
Data Key
Data Sub Key

Access and Mobility Subscription data
SUPI
Serving PLMN IDand optionally NID
SMF Selection Subscription data
SUPI
Serving PLMN ID and optionally NID
UE context in SMF data
SUPI
S-NSSAI
SMS Management Subscription data
SUPI
Serving PLMN ID and optionally NID
SMS Subscription data
SUPI
Serving PLMN ID and optionally NID
UE Context in SMSF data
SUPI
-
Session Management Subscription data
SUPI
S-NSSAI
DNN
Serving PLMN ID and optionally NID
Identifier translation
GPSI
-
SUPI
Application Port ID
Slice Selection Subscription data
SUPI
Serving PLMN ID and optionally NID
Intersystem continuity Context
SUPI
DNN
LCS privacy
SUPI
LCS mobile origination
SUPI
UE reachability
SUPI
Steering of Roaming Information
SUPI
-
UE context in AMF data
SUPI
-

 
Subscription Data Types
Data Key
Data Sub Key

Group Identifier translation
External Group Identifier
-
Internal Group Identifier
-
Group Data
Internal Group Identifier
-

Wireline access specific subscription data parameters are specified in TS 23.316.
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5.2.3.3.2  Nudm_SDM_Get service operationWord-p. 466
Service operation name:
Nudm_SDM_Get
Description:
Consumer NF gets the subscription data indicated by the subscription data type input from UDM. The UDM shall check the requested consumer is authorized to get the specific subscription data requested. In the case of NF consumer is SMF, the subscriber data may contain e.g. Allowed PDU Session Type(s), Allowed SSC mode(s), default 5QI/ARP, Subscribed S-NSSAI(s).
Inputs, Required:
NF ID, Subscription data type(s), Key for each Subscription data type(s).
Inputs, Optional:
Data Sub Key(s), SoR Update Indicator {Default, Initial Registration, Emergency Registration}.
If the AMF already has subscription data for the UE but the SoR Update Indicator in the UE context requires the AMF to retrieve SoR information depending on the NAS Registration Type ("Initial Registration" or "Emergency Registration"), the AMF shall include SoR update indicator with a value ("Default" or "Initial Registration" or "Emergency Registration") in the Nudm_SDM_Get depending on the NAS Registration type.
If the AMF doesn't have the subscription data for the UE, the AMF shall include SoR update indicator with the value "Default" in the Nudm_SDM_Get.
Outputs, Required:
The consumer NF gets the requested subscription data.
Outputs, Optional:
None.
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5.2.3.3.3  Nudm_SDM_Notification service operationWord-p. 467
Service or Service operation name: Nudm_SDM_Notification
Description:
The UDM notifies NF consumer of the updates of Subscription Data indicated by the "subscription data Type" input, and additional UDM-related parameters.
Inputs, Required:
Subscription data type(s), Key for each Subscription data type(s).
Inputs, Optional:
None.
Outputs, Required:
Result Indication.
The UDM invokes this service operation under the following cases:
  • When the subscription data is updated at the UDM, the updated subscription information is notified to the serving NF that has subscribed for the specific subscription data type to be notified.
  • When the UDM needs to deliver Steering of Roaming information to a UE.
  • When the UDM needs to deliver UDM Update Data to a UE (e.g. a new Routing Indicator or Default Configured NSSAI to the UE).
If the updated subscription information is related to session management the subscriber data may contain e.g. Allowed PDU Session Type(s), Allowed SSC mode(s), default 5QI/ARP.
Outputs, Optional:
Redirection information.
If the NF consumer is AMF, and if the result of the service operation fails, AMF shall set corresponding cause value in result indication which can be used by the UDM for further action. If the related UE is not served by the AMF and the AMF knows which AMF is serving the UE, the AMF provides redirection information which can be used by the UDM to resend UE related message to the AMF that serves the UE.
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5.2.3.3.4  Nudm_SDM_Subscribe service operation
Service operation name:
Nudm_SDM_Subscribe
Description:
The NF consumer subscribes for updates to Subscription Data indicated by the 'subscription data type' input. The UDM shall check the requested consumer is authorized to subscribe to requested updates.
Inputs, Required:
Subscription data type(s), Key for each Subscription data type(s).
Inputs, Optional:
Data Sub Key(s), Immediate Report Indication.
Outputs, Required:
None.
Outputs, Optional:
Subscription Data.
5.2.3.3.5  Nudm_SDM_Unsubscribe service operation
Service operation name:
Nudm_SDM_Unsubscribe
Description:
The NF consumer unsubscribes from updates to Subscription Data indicated by the 'subscription data type input.
Inputs, Required:
Subscription data type(s), Key for each Subscription data type(s).
Inputs, Optional:
If the NF type is SMF: DNN, S-NSSAI.
Outputs, Required:
None.
Outputs, Optional:
None.
5.2.3.3.6  Nudm_SDM_Info service operationWord-p. 468
Service operation name:
Nudm_SDM_Info
Description:
Consumer NF provides UDM with information about the status of the subscription data management procedures. This service operation is used for:
  • providing acknowledgement from the UE to UDM about successful delivery of Steering of Roaming information via the AMF as defined in TS 23.122.
  • providing acknowledgement from the UE to UDM about successful Network Slicing Configuration subsequent to delivery of the Network Slicing Subcription Change Indication via the AMF.
  • providing acknowledgement from the UE to UDM about successful delivery of UDM Update Data via the AMF as defined in clause 4.20.
Inputs, Required:
SUPI, Info (e.g. UE acknowledgment of SoR information from UDM via AMF, UE acknowledgement of successful Network Slicing Configuration subsequent to delivery of the Network Slicing Subcription Change Indication via the AMF).
Inputs, Optional:
None.
Outputs, Required:
None.
Outputs, Optional:
None.
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5.2.3.3.7Void
5.2.3.4  Nudm_UEAuthentication Service
5.2.3.4.1  General
This service is used by the requester NF to get authentication data and provide UDM with the result of the authentication procedure success.
5.2.3.4.2  Nudm_UEAuthentication_Get service operation
See TS 33.501.
5.2.3.4.3  Nudm_UEAuthentication_ResultConfirmation service operation
See TS 33.501.
5.2.3.5  Nudm_EventExposure service
5.2.3.5.1  General
5.2.3.5.2  Nudm_EventExposure_Subscribe service operation
Service operation name:
Nudm_EventExposure_Subscribe
Description:
The NF consumer subscribes to receive an event, or if the subscription is already defined in UDM, then the subscription is updated.
NF Consumers: NEF.
Inputs (required): Target of Event Reporting: UE(s) ID (SUPI or GPSI, Internal Group Identifier or External Group Identifier, or indication that any UE is targeted), Event filter containing the Event Id(s) (see clause 4.15.3.1) and Event Reporting Information defined in Table 4.15.1-1.
Inputs (optional): Expiry time, DNN, S-NSSAI, traffic descriptor identifying the source of the downlink IP or Ethernet traffic (for Availability after DDN Failure and downlink data delivery status events).
Outputs (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 operator's policy).
Outputs (optional): First corresponding event report is included, if corresponding information is available (see clause 4.15.1), Number of UE if the External Group Identifier and Maximum Number of Reports are included in the inputs.
Number of UEs indicates the number of UEs within the group identified by the External Group Identifier. The NEF uses this value to determine whether the monitoring event has been reported for all group member UEs.
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5.2.3.5.3  Nudm_EventExposure_Unsubscribe service operationWord-p. 469
Service operation name:
Nudm_EventExposure_Unsubscribe
Description:
the consumer deletes the subscription of an event if already defined in UDM.
Inputs (required): Subscription Correlation ID.
Outputs (required): Operation execution result indication.
5.2.3.5.4  Nudm_EventExposure_Notify service operation
Service operation name:
Nudm_EventExposure_Notify
Description:
UDM reports the event to the consumer that has previously subscribed.
Inputs (required): Event ID, Notification Correlation Information, time stamp.
Inputs (optional): Event specific parameters list.
Outputs (required): None.
5.2.3.6  Nudm_ParameterProvision service
5.2.3.6.1  General
This service is for allowing NEF to provision of information which can be used for the UE in 5GS.
Parameter Provision data types used in the Nudm_ParameterProvision Service are defined in Table 5.2.3.6.1-1 below.
Parameter Provision data type
Description

Expected UE Behaviour parameters
Network Configuration parameters
5G-VN group data
5G VN group membership management parameters
Location Privacy Indication parameters
Location Privacy Indication parameters of the "LCS privacy" Data Subset of the Subscription Data.
Enhanced Coverage Restriction Information

At least a mandatory key is required for each Parameter Provision Data Type to identify the corresponding data as defined in Table 5.2.3.6.1-2.
Parameter Provision Data Types
Data Key
Data Sub Key

Expected UE Behaviour parameters
GPSI or External Group ID
-
Network Configuration parameters
GPSI
-
5G-VN group data
External Group Identifier
-
5G VN group membership management parameters
External Group Identifier
-
Location Privacy Indication parameters.
GPSI
-
Enhanced Coverage Restriction Information
GPSI
-

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5.2.3.6.2  Nudm_ParameterProvision_Update service operationWord-p. 470
Service operation name:
Nudm_ParameterProvision_Update.
Description:
The consumer updates the UE related information (e.g., Expected UE Behaviour, Network Configuration parameters, Location Privacy Indication parameters, Enhanced Coverage Restriction Information) or 5G VN group related information (5G VN group data, 5G VN membership management).
Inputs (required): AF ID, Transaction Reference ID(s).
Inputs (optional): GPSI or SUPI, External Group ID, at least one of the Expected UE Behaviour parameters or at least one of the Network Configuration parameters or 5G VN group related information, Validity Time or Location Privacy Indication parameters or Enhanced Coverage Restriction Information.
Outputs (required): Transaction Reference ID(s), Operation execution result indication.
Outputs (optional): Transaction specific parameters, if available.
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5.2.3.6.3  Nudm_ParameterProvision_Create service operation [R16]
Service operation name:
Nudm_ParameterProvision_Create
Description:
The consumer creates a 5G VN group related information (e.g. 5G VN group data, 5G VN membership management).
Inputs (required): AF ID, Transaction Reference ID(s).
Inputs (optional): GPSI, External Group ID, for 5G VN group creation, External Group ID, 5G VN group related information.
Outputs (required): Transaction Reference ID(s), Operation execution result indication.
Outputs (optional): Transaction specific parameters, if available; Internal Group ID if the inputs include a new 5G VN configuration.
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5.2.3.6.4  Nudm_ParameterProvision_Delete service operation [R16]
Service operation name:
Nudm_ParameterProvision_Delete
Description:
The consumer deletes a 5G VN group.
Inputs (required): AF ID, Transaction Reference ID(s).
Inputs (optional): GPSI, External Group ID, for 5G VN group deletion, External Group ID.
Outputs (required): Transaction Reference ID(s), Operation execution result indication.
Outputs (optional): None.
5.2.3.6.5  Nudm_ParameterProvision_Get service operation [R16]Word-p. 471
Service operation name:
Nudm_ParameterProvision_Get
Description:
The consumer gets the UE related information (e.g. Expected UE Behaviour, Network Configuration parameters).
Inputs (required): GPSI, AF ID, requested information (e.g., Expected UE Behaviour, Network Configuration parameters).
Inputs (optional): None.
Outputs (required): Requested data, Operation execution result indication.
Outputs (optional): None.
5.2.3.7  Nudm_NIDDAuthorisation service [R16]
5.2.3.7.1  General
5.2.3.7.2  Nudm_NIDDAuthorisation_Get service operation
Service operation name:
Nudm_NIDDAuthorisation_Get
Description:
The consumer requests authorisation for NIDD Configuration.
Inputs (required): GPSI or External Group Identifier, DNN, S-NSSAI, MTC Provider Information).
Outputs (required): Single value or list of (SUPI, GPSI), Result.
5.2.3.7.3  Nudm_NIDDAuthorisation_UpdateNotify service operation
Service operation name:
Nudm_NIDDAuthorisation_UpdateNotify
Description:
This service operation is used by the UDM to notify the NIDD Authorization Update to NF consumer.
Inputs (required): SUPI, GPSI, DNN, S-NSSAI, Result.
Outputs (required): Cause.
5.2.4  5G-EIR Services
5.2.4.1  General
The following table illustrates the 5G-EIR Service.
NF service
Service Operations
Operation Semantics
Example Consumer(s)

N5g-eir_Equipment Identity Check
Get
Request/Response
AMF

5.2.4.2  N5g-eir_EquipmentIdentityCheck serviceWord-p. 472
5.2.4.2.1  General
Service description: This service is provided by the 5G-EIR to check the PEI and check whether the PEI is in the black list or not. The service can be consumed by AMF. The service operations provided within this service are depicted as below.
5.2.4.2.2  N5g-eir_EquipmentIdentityCheck_Get service operation
Service operation name:
N5g-eir_EquipmentIdentityCheck_Get
Description:
Check the PEI and determine whether the subscriber is allowed to use the equipment.
Inputs, Required:
PEI, SUPI.
Inputs, Optional:
none
Outputs, Required:
PEI checking result
Outputs, Optional:
none

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