ETSI TS 132 255 V15.5.0 (2020-01)

ETSI TS 132 255 V15.5.0 (2020-01)






TECHNICAL SPECIFICATION
5G;
Telecommunication management;
Charging management;
5G data connectivity domain charging;
Stage 2
(3GPP TS 32.255 version 15.5.0 Release 15)

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3GPP TS 32.255 version 15.5.0 Release 15 1 ETSI TS 132 255 V15.5.0 (2020-01)



Reference
RTS/TSGS-0532255vF50
Keywords
5G
ETSI
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3GPP TS 32.255 version 15.5.0 Release 15 2 ETSI TS 132 255 V15.5.0 (2020-01)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities. These shall be
interpreted as being references to the corresponding ETSI deliverables.
The cross reference between 3GPP and ETSI identities can be found under http://webapp.etsi.org/key/queryform.asp.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 32.255 version 15.5.0 Release 15 3 ETSI TS 132 255 V15.5.0 (2020-01)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 6
1 Scope. . 7
2 References . 7
3 Definitions, symbols and abbreviations . 8
3.1 Definitions . 8
3.2 Symbols . 8
3.3 Abbreviations . 9
4 Architecture considerations . 9
4.1 High-level 5G System architecture . 9
4.1.1 Non-roaming reference architecture . 9
4.1.2 Roaming Home Routed reference architecture . 10
4.1.3 Interworking with EPC architecture . 10
4.1.4 Architecture reference for Non-3GPP Accesses . 11
4.2 5G data connectivity domain converged charging architecture . 12
5 5G data connectivity charging principles and scenarios . 12
5.1 5G data connectivity charging principles . 12
5.1.1 General . 12
5.1.2 Requirements . 13
5.1.3 Charging information . 13
5.1.4 Charging Identifier . 14
5.1.5 PCC rules and charging . 14
5.1.5.1 PCC rules and chargeable events . 14
5.1.5.2 Specific PCC rules scenarios. 15
5.1.6 Session and Service Continuity modes . 15
5.1.7 UE Presence in Presence Reporting Area (PRA) . 15
5.1.8 CHF selection . 15
5.1.9 Roaming . 16
5.1.9.1 General . 16
5.1.9.2 CHF selection . 16
5.1.10 Data Volume Reporting for Secondary RAT usage . 16
5.2 5G data connectivity converged online and offline charging scenarios . 17
5.2.1 Basic principles . 17
5.2.1.1 General . 17
5.2.1.2 Applicable Triggers in the SMF . 18
5.2.1.2.1 General . 18
5.2.1.2.2 Flow Based Charging (FBC) triggers . 18
5.2.1.2.2 QoS flow Based Charging (QBC) triggers . 18
5.2.1.3 PDU session charging . 19
5.2.1.4 Flow Based Charging (FBC) . 19
5.2.1.5 SSC Mode and Triggers . 25
5.2.1.6 QoS flow Based Charging . 27
5.2.1.7 Roaming QoS flow Based charging (QBC) . 30
5.2.1.8 Termination action . 30
5.2.1.9 Sponsored data connectivity charging . 31
5.2.2 Message flows . 31
5.2.2.1 General . 31
5.2.2.2 PDU session charging from SMF . 31
5.2.2.2.1 General . 31
5.2.2.2.2 PDU session establishment . 31
5.2.2.3 PDU session charging SSC Mode 1 from SMF . 33
ETSI

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3GPP TS 32.255 version 15.5.0 Release 15 4 ETSI TS 132 255 V15.5.0 (2020-01)
5.2.2.3.1 General . 33
5.2.2.3.2 PDU session charging SSC Mode 1 . 33
5.2.2.4 PDU session Charging SSC Mode 2 from SMF . 34
5.2.2.4.1 General . 34
5.2.2.4.2 PDU session Charging SSC Mode 2 . 34
5.2.2.5 PDU session Charging SSC Mode 3 from SMF . 36
5.2.2.5.1 General . 36
5.2.2.5.2 PDU session Charging SSC Mode 3 . 36
5.2.2.6 PDU session Charging SSC Mode 3 IPv6 Multi Homed from SMF . 37
5.2.2.6.1 General . 37
5.2.2.6.2 PDU session Charging SSC Mode 3 IPv6 Multi Homed . 37
5.2.2.7 Addition of additional PDU Session Anchor and Branching Point or UL CL . 39
5.2.2.8 Removal of additional PDU Session Anchor and Branching Point or UL CL . 40
5.2.2.9 Change of additional PDU Session Anchor for IPv6 multi-homing or UL CL . 41
5.2.2.10 Simultaneous change of Branching Point or UL CL and additional PSA for a PDU Session. 42
5.2.2.11 PDU session charging for interworking with EPC . 44
5.2.2.11.1 General . 44
5.2.2.11.2 5GS to EPS handover using N26 interface . 44
5.2.2.11.3 EPS to 5GS handover using N26 interface . 46
5.2.2.12 PDU session charging for roaming in Home routed scenario . 47
5.2.2.12.1 General . 47
5.2.2.12.2 PDU session establishment . 47
5.2.2.12.3 PDU session modification . 49
5.2.2.12.4 PDU session release . 50
5.2.2.13 PDU session charging - non-3GPP access . 51
5.2.2.13.1 General . 51
5.2.2.13.2 PDU session establishment . 52
5.2.2.13.3 PDU session modification . 52
5.2.2.13.4 PDU session release . 53
5.2.3 CDR generation . 54
5.2.3.1 Introduction . 54
5.2.3.2 Triggers for CHF CDR . 54
5.2.3.2.1 General . 54
5.2.3.2.2 Triggers for CHF CDR charging information addition . 55
5.2.3.2.3 Triggers for CHF CDR partial record closure . 55
5.2.3.2.4 Triggers for CHF CDR closure . 56
5.2.3.3 Triggers for CHF CDR for roaming QBC. 56
5.2.3.3.1 General . 56
5.2.3.3.2 Triggers for CHF CDR charging information addition for roaming QBC . 56
5.2.3.3.3 Triggers for CHF CDR partial record closure for roaming QBC . 57
5.2.3.3.4 Triggers for roaming QBC CHF CDR closure . 57
5.2.4 Ga record transfer flows . 57
5.2.5 Bd CDR file transfer . 57
6. Definition of charging information . 57
6.1 Data description for 5G data connectivity charging . 57
6.1.1 Message contents . 57
6.1.1.1 General . 57
6.1.1.2 Charging Data Request message . 58
6.1.1.3 Charging data response message . 59
6.1.2 Ga message contents . 59
6.1.3 CDR description on the B interface . 59
d
6.1.3.1 General . 59
6.1.3.2 PDU session charging CHF CDR data . 59
6.1.3.3 Roaming QBC CHF CDR data . 62
6.2 5G data connectivity charging specific parameters . 62
6.2.1 Definition of 5G data connectivity charging information . 62
6.2.1.1 General . 62
6.2.1.2 Definition of PDU session charging information . 63
6.2.1.3 Definition of PDU Container information . 65
6.2.1.4 Definition of roaming QBC information . 66
6.2.1.5 Definition of QFI Container information . 66
ETSI

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3GPP TS 32.255 version 15.5.0 Release 15 5 ETSI TS 132 255 V15.5.0 (2020-01)
6.2.2 Detailed message format for converged charging . 67
6.2.3 Formal 5G data connectivity charging parameter description . 70
6.2.3.1 5G data connectivity CHF CDR parameters . 70
6.2.3.2 5G data connectivity resources attributes . 70
Annex A (normative): Charging Characteristics . 71
A.1 General . 71
Annex B (informative): Change history . 72
History . 73

ETSI

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3GPP TS 32.255 version 15.5.0 Release 15 6 ETSI TS 132 255 V15.5.0 (2020-01)
Foreword
This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI

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3GPP TS 32.255 version 15.5.0 Release 15 7 ETSI TS 132 255 V15.5.0 (2020-01)
1 Scope.
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 [1], 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 [1].
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 [200], TS 23.502 [201] and TS 23.503 [202].
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 [1] 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 [1].
- The parameters, abstract syntax and encoding rules for the CDRs are specified in TS 32.298 [51].
- A transaction based mechanism for the transfer of CDRs within the network is specified in TS 32.295 [54].
- 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 [52].
- The services, operations and procedures of charging, using Service Based Interface are specified in TS 32.290
[57].
- The charging service of 5G system is specified in TS 32.291 [58].
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 [100]. Those that are common across charging management in
3GPP networks/domains, services or subsystems are provided in the umbrella TS 32.240 [1] 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.
2 References
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] 3GPP TS 32.240: "Telecommunication management; Charging management; Charging
architecture and principles".
ETSI

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3GPP TS 32.255 version 15.5.0 Release 15 8 ETSI TS 132 255 V15.5.0 (2020-01)
[2] - [50] Void.
[51] 3GPP TS 32.298: "Telecommunication management; Charging management; Charging Data
Record (CDR) parameter description".
[52] 3GPP TS 32.297: "Telecommunication management; Charging management; Charging Data
Record (CDR) file format and transfer".
[53] Void.
[54] 3GPP TS 32.295: "Telecommunication management; Charging management; Charging Data
Record (CDR) transfer".
[55-56] Void.
[57] 3GPP TS 32.290: "Telecommunication management; Charging management; 5G system; Services,
operations and procedures of charging using Service Based Interface (SBI)".
[58] 3GPP TS 32.291: " Telecommunication management; Charging management; 5G system;
Charging service, stage 3".
[59] - [99] Void.
[100] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[101] 3GPP TS 22.115: "Service aspects; Charging and billing".
[102] 3GPP TS 22.261: "Service requirements for next generation new services and markets".
[103] - [199] Void
[200] 3GPP TS 23.501:"System Architecture for the 5G System".
[201] 3GPP TS 23.502:"Procedures for the 5G System".
[202] 3GPP TS 23.503:"Policy and Charging Control Framework for the 5G System; Stage 2".
[203] - [299] Void
[300] - [399] Void.
[400] - [499] Void.
[500] - [599] Void.
3 Definitions, symbols and abbreviations
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 p
...