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3GPP Glossaries:  Interfaces / Reference Points
for letter 'N' (4 of 5)

 

5GS–N5g-eir

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Service-based interface exhibited by  5G-EIR 

specified from  Rel-15  in
TS 23.501, clause 7.2.11
TS 23.502, clause 5.2.4
draft-TS 29.511 

Network Function Services provided by N5g-eir:
  • N5g-eir_EquipmentIdentityCheck
    This service enables the 5G-EIR to check the PEI and check whether the PEI is in the black list or not.


5GS–Naf

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Service-based interface exhibited by  AF 

specified from  Rel-15  in
TS 23.501, clause 4.2.6 



5GS–Namf

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Service-based interface exhibited by  AMF 

specified from  Rel-15  in
TS 23.501, clause 7.2.2
TS 23.502, clause 5.2.2
draft-TS 29.518 

Network Function Services provided by Namf:
  • Namf_Communication
    This service enables an NF to communicate with the UE and/or the AN through the AMF.
  • Namf_EventExposure
    This service enables other NFs to subscribe or get notified of the mobility related events and statistics.
  • Namf_MT
    This service enables an NF to make sure UE is reachable.


5GS–Nausf

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Service-based interface exhibited by  AUSF 

specified from  Rel-15  in
TS 23.501, clause 7.2.7
TS 23.502, clause 5.2.10
draft-TS 29.509 

Network Function Services provided by Nausf:
  • Nausf_UEauthentication
    The AUSF provides UE authentication service to requester NF.


Nb

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between  CS-MGW
and  CS-MGW

see it   here

specified from  Rel-4  in
TS 23.205, clause 5.1.2.3
TS 29.414
TS 29.415 

The bearer control signalling and transport are carried over the Nb interface.


Nc

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between  (G)MSC Server
and  MSC Server

see it   here

specified from  Rel-4  in
TS 23.205, clause 4.2
TS 23.231, clause 4.2
TS 29.205
TS 29.231 

The protocol used on the Nc interface shall be a call control protocol supporting IP and ATM transports in a bearer-independent manner for the ISDN service set, allowing the physical separation of the call control entities from the bearer control entities.


NG

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between  gNB / ng-eNB
and  AMF / UPF

see it   here

specified from  Rel-15  in
TS 38.300, clause 3.2
draft-TS 38.410
draft-TS 38.411
draft-TS 38.412
draft-TS 38.413
draft-TS 38.414 

Interface between NG-RAN and 5GC.


5GS–Nnef

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Service-based interface exhibited by  NEF 

specified from  Rel-15  in
TS 23.501, clause 7.2.8
TS 23.502, clause 5.2.6
draft-TS 29.513 

Network Function Services provided by Nnef:
  • Nnef_EventExposure
  • Nnef_PFDmanagement
  • Nnef_ParameterProvision
    This service is for allowing external party to provision of information which can be used for the UE in 5GS.


5GS–Nnrf

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Service-based interface exhibited by  NRF 

specified from  Rel-15  in
TS 23.501, clause 7.2.6
TS 23.502, clause 5.2.7
draft-TS 29.510 

Network Function Services provided by Nnrf:
  • Nnrf_NFManagement
    Provides support for register, deregister and update service to NF, NF services. Provide consumers with notifications of newly registered NF along with its NF services.
  • Nnrf_NFDiscovery
    Enables one NF service consumer to discover a set of NF instances with specific NF service or a target NF type. Also enables one NF service to discover a specific NF service.


5GS–Nnssf

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Service-based interface exhibited by  NSSF 

specified from  Rel-15  in
TS 23.501, clause 4.2.2
draft-TS 29.531 

TBC


5GS–Nnwdaf

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Service-based interface exhibited by  NWDAF 

specified from  Rel-15  in
TS 23.501, clause 7.2.12
TS 23.502, clause 5.2.11
draft-TS 29.520 

Network Function Services provided by Nnwdaf:
  • Nnwdaf_Events_Subscription
    This service enables the NF service consumers to subscribe/unsubscribe for network slice specific congestion events notification from the NWDAF.
  • Nnwdaf_Analytics_Info
    This service enables the NF service consumers to request and get operator specific analytics from NWDAF.


Np   (Diameter)

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between  RCAF
and  PCRF / V-PCRF

see it   here

specified from  Rel-13  in
TS 23.203, clause 5.2.12
TS 29.217 

The Np reference point enables transport of RAN User Plane Congestion Information (RUCI) sent from the RCAF to the PCRF for all or selected subscribers, depending on the operator's congestion mitigation policy. The Np reference point supports the following functions:
  • Reporting of RUCI from the RCAF to the PCRF.
  • Sending, updating and removal of the reporting restrictions from the PCRF to the RCAF.
Commands:
  • NRR/NRA:  Non-Aggregated-RUCI-Report-Request/Answer
  • ARR/ARA:  Aggregated-RUCI-Report-Request/Answer
  • MUR/MUA:  Modify-Uecontext-Request/Answer
See also  RFC 6733  for Diameter Base Protocol, and  TS 29.230  for 3GPP-specific Diameter codes and identifiers.


5GS–Npcf

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Service-based interface exhibited by  PCF 

specified from  Rel-15  in
TS 23.501, clause 7.2.4
TS 23.502, clause 5.2.5
draft-TS 29.512 

Network Function Services provided by Npcf:
  • Npcf_AMPolicyControl
    This PCF service provides Access Control, network selection and Mobility Management related policies, UE Route Selection Policies to the NF consumers.
  • Npcf_SMPolicyControl
    This PCF service provides session related policies to the NF consumers
  • Npcf_PolicyAuthorization
    This PCF service authorises an AF request and creates policies as requested by the authorised AF for the PDU Session to which the AF session is bound to. This service allows the NF consumer to subscribe/unsubscribe to the notification of Access Type and RAT type, PLMN identifier, access network information, usage report...



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