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Content for  TS 32.255  Word version:  17.8.0

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1  Scope.p. 9

The present document is part of a series of documents that specify charging functionality and charging management in 3GPP networks. The 3GPP core network charging architecture and principles are specified in TS 32.240, which provides an umbrella for other charging management TSs that specify:
  • the content of the CDRs per domain / subsystem / service (offline charging);
  • the content of real-time charging messages per domain / subsystem / service (online charging);
  • the functionality of online and offline charging for those domains / subsystems / services;
  • the interfaces that are used in the charging framework to transfer the charging information (i.e. CDRs or charging events).
The complete document structure for these TSs is defined in TS 32.240.
The present document specifies the converged offline and online charging description for the 5G Data Connectivity domain based on the functional stage 2 description in TS 23.501, TS 23.502 and TS 23.503.
This charging description includes the converged offline and online charging architecture and scenarios specific to the 5G Data Connectivity domain, as well as the mapping of the common 3GPP charging architecture specified in TS 32.240 onto the 5G Data Connectivity domain.
It further specifies the structure and content of the CDRs for offline charging, and the charging events for converged online and offline charging. The present document is related to other 3GPP charging TSs as follows:
  • The common 3GPP charging architecture is specified in TS 32.240.
  • The parameters, abstract syntax and encoding rules for the CDRs are specified in TS 32.298.
  • A transaction based mechanism for the transfer of CDRs within the network is specified in TS 32.295.
  • The file based mechanism used to transfer the CDRs from the network to the operator's billing domain (e.g. the billing system or a mediation device) is specified in TS 32.297.
  • The services, operations and procedures of charging, using Service Based Interface are specified in TS 32.290.
  • The charging service of 5G system is specified in TS 32.291.
All references, abbreviations, definitions, descriptions, principles and requirements, used in the present document, that are common across 3GPP TSs, are defined in TR 21.905. Those that are common across charging management in 3GPP networks/domains, services or subsystems are provided in the umbrella TS 32.240 and are copied into clause 3 of the present document for ease of reading. Finally, those items that are specific to the present document are defined exclusively in the present document.
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2  Referencesp. 9

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TS 32.240: "Telecommunication management; Charging management; Charging architecture and principles".
[2] - [50]  Void.
[51]
TS 32.298: "Telecommunication management; Charging management; Charging Data Record (CDR) parameter description".
[52]
TS 32.297: "Telecommunication management; Charging management; Charging Data Record (CDR) file format and transfer".
[53]   Void.
[54]
TS 32.295: "Telecommunication management; Charging management; Charging Data Record (CDR) transfer".
[55-56]   Void.
[57]
TS 32.290: "Telecommunication management; Charging management; 5G system; Services, operations and procedures of charging using Service Based Interface (SBI)".
[58]
TS 32.291: " Telecommunication management; Charging management; 5G system; Charging service, stage 3".
[59] - [99]  Void.
[100]
TR 21.905: "Vocabulary for 3GPP Specifications".
[101]
TS 22.115: "Service aspects; Charging and billing".
[102]
TS 22.261: "Service requirements for next generation new services and markets".
[103] - [199]  Void
[200]
TS 23.501: "System Architecture for the 5G System".
[201]
TS 23.502: "Procedures for the 5G System".
[202]
TS 23.503: "Policy and Charging Control Framework for the 5G System; Stage 2".
[203]
TS 23.316: "Wireless and wireline convergence access support for the 5G System (5GS)".
[204] - [299]  Void
[300] - [399]  Void.
[400] - [499]  Void.
[500] - [599]  Void.
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3  Definitions, symbols and abbreviationsp. 10

3.1  Definitionsp. 10

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

3.2  Symbolsp. 10

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  Abbreviationsp. 11

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