3 Definitions, symbols and abbreviations

32.2553GPP5G data connectivity domain chargingCharging managementRelease 17Stage 2Telecommunication managementTS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [100] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [100].

3.2 Symbols

For the purposes of the present document, the following symbols apply:

Bd Reference point for the CDR file transfer from the 5G Data connectivity CGF to the BD.

Ga Reference point for CDR transfer between a CDF and the CGF.

Nchf Service based interface exhibited by CHF.

N40 Reference point between SMF and the CHF.

3.3 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [100] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [100].

5GC 5G Core Network

5GS 5G System

ABMF Account Balance Management Function

AF Application Function

AMF Access and Mobility Management Function

ATSSS Access Traffic Steering, Switching, Splitting

AUSF Authentication Server Function

BD Billing Domain

CCS Converged Charging System

CDF Charging Data Function

CGF Charging Gateway Function

CHF Charging Function

CIoT Cellular Internet of Things

CP Control Plane

CTF Charging Trigger Function

DNN Data Network Name

FBC Flow Based Charging

IoT Internet of Things

GPSI Generic Public Subscription Identifier

GUAMI Globally Unique AMF Identifier

MA Multi-Access

MPTCP Multi-Path TCP Protocol

MTC Machine-Type Communications

N3IWF Non-3GPP InterWorking Function

NE Network Element

NEF Network Exposure Function

NF Network Function

NRF Network Repository Function

NSSF Network Slice Selection Function

OCF Online Charging Function

OCS Online Charging System

PCC Policy and Charging Control

PCF Policy Control Function

PEI Permanent Equipment Identifier

QBC QoS flow Based Charging

QFI QoS Flow Identifier

SCP Service Communication Proxy

SDF Service Data Flow

SMF Session Management Function

SSC Session and Service Continuity

SUPI Subscription Permanent Identifier

TNAN Trusted Non-3GPP Access Network

TNAP Trusted Non-3GPP Access Point

UDM Unified Data Management

UDR Unified Data Repository

UPF User Plane Function