ETSI TS 122 115 V13.4.0 (2020-01)

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Service aspects; Charging and billing (3GPP TS 22.115 version 13.4.0 Release 13)

RTS/TSGS-0122115vd40

General Information

• Status: Published
• Publication Date: 12-Jan-2020
• Technical Committee: 3GPP SA 1 - Services
• Current Stage: 12 - Completion
• Completion Date: 13-Jan-2020

Standards Content (Sample)

ETSI TS 122 115 V13.4.0 (2020-01)






TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
Service aspects;
Charging and billing
(3GPP TS 22.115 version 13.4.0 Release 13)

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3GPP TS 22.115 version 13.4.0 Release 13 1 ETSI TS 122 115 V13.4.0 (2020-01)



Reference
RTS/TSGS-0122115vd40
Keywords
GSM,LTE,UMTS
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3GPP TS 22.115 version 13.4.0 Release 13 2 ETSI TS 122 115 V13.4.0 (2020-01)
Intellectual Property Rights
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Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
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"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
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3GPP TS 22.115 version 13.4.0 Release 13 3 ETSI TS 122 115 V13.4.0 (2020-01)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
2 References . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Main Requirements and High Level Principles . 7
4.1 Cross Phase Compatibility . 9
4.2 Charging Entity Relationships . 9
4.3 Charging guidelines for IP-Multimedia services . 11
4.3.1 User Charging Requirements . 11
4.3.1.1 Session End Point Configurations . 11
4.3.1.2 Charging Principles For User Session Components . 12
4.3.1.3 Other Charging Requirements . 14
4.3.2 Roaming Charging Requirements . 14
4.3.3 Interconnect Charging Requirements. 15
4.3.4 Conveyance & Usage charging requirements . 16
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4.3.5 Charging 3 parties . 16
4.3.6 Advice of Charge (AoC) . 16
4.3.7 Service Aware Charging Requirements . 17
4.4 Additional Charging requirements for prepay services . 17
4.5 QoS and gating based on spending limit . 18
4.6 ProSe Charging Requirements . 18
5 Collection of charging information . 19
5.1 Charging information Requirements . 19
5.1.1 Information provided by the user . 19
5.1.2 Information provided by the serving network . 19
5.1.3 Charged Party . 20
5.1.4 Information provided by the third party accessed by the user . 21
5.2 Special Cases . 21
5.2.1 Long calls and sessions . 21
5.2.2 Multimedia calls . 22
5.2.3 Service Change . 22
5.2.4 E-Commerce . 22
5.2.5 Volume Based Charging . 22
5.2.6 VAS . 22
5.2.7 Usage of IP Multimedia service . 22
5.2.8 I- WLAN . 22
5.2.9 Charging for two( and multi)-phases services for IMS networks . 22
5.2.10 CSG charging requirements for UTRAN and E-UTRAN . 23
5.2.11 Inter-UE Transfer charging . 23
5.2.12 Selected IP Traffic Offload charging . 23
5.2.12A Charging requirements for IoT small data . 23
6 Transfer of Charging Information . 24
6.1 Integrity, Secrecy and Validation of Content and Receipt of Charging Information . 24
7 Accounting and Settlement . 24
7.1 Delegation of charging authority . 24
7.2 Fraud Control . 24
7.2.1 Fraud Control by the Home Environment . 25
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3GPP TS 22.115 version 13.4.0 Release 13 4 ETSI TS 122 115 V13.4.0 (2020-01)
7.2.2 Fraud Control by the Serving Network . 25
7.3 Cost Control . 25
7.3.1 Cross Phase Compatibility . 25
7.4 Inter-network Settlement . 25
8 Automatic Roaming Agreements . 26
8.1 Routing the Registration Request . 26
8.2 Settlement of charges . 26
Annex A (informative) : Change history . 27
History . 30

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3GPP TS 22.115 version 13.4.0 Release 13 5 ETSI TS 122 115 V13.4.0 (2020-01)
Foreword
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This Technical Specification (TS) has been produced by the 3 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.
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3GPP TS 22.115 version 13.4.0 Release 13 6 ETSI TS 122 115 V13.4.0 (2020-01)
1 Scope
The present document describes the Service Aspects of charging and billing of the 3GPP System.
The present document is not intended to duplicate existing standards or standards being developed by other groups on
these topics, and will reference these where appropriate. The present document will elaborate on the charging
requirements described in the Charging Principles in 3GPP TS 22.101 Service Principles. It will allow the generation of
accurate charging information to be used in the commercial and contractual relationships between the parties concerned.
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 22.101: "Service aspects; Service Principles".
[2] 3GPP TS 22.066: "Support of Mobile Number Portability (MNP)".
[3] 3GPP TS 22.234: "Requirements for 3GPP system to wireless local area network (WLAN)
interworking".
[4] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications"
[5] 3GPP TS 22.086: "Advice of Charge (AoC) supplementary services"
[6] ETS 300 178: "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information at call set-up time (AOC-S) supplementary service; Service description"
[7] ETS 300 179: "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information during the call (AOC-D) supplementary service; Service description"
[8] ETS 300 180: "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information at the end of the call (AOC-E) supplementary service; Service description"
[9] TS 183 047: "Telecommunications and Internet converged Services and Protocols for Advanced
Networking (TISPAN); NGN IMS Supplementary Services; Advice Of Charge (AOC)"
[10] TS 183 058: "Telecommunications and Internet Converged Services and Protocols for Advanced
Networking (TISPAN); SIP Transfer of IP Multimedia Service Tariff Information;Protocol
specification"
[11] void
[12] 3GPP TS 22.220, "Service requirements for Home NodeBs and Home eNodeBs"
[13] 3GPP TS 22.278, "Service requirements for the Evolved Packet System (EPS)"
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3GPP TS 22.115 version 13.4.0 Release 13 7 ETSI TS 122 115 V13.4.0 (2020-01)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the definitions in [4] are supplemented by the following definitions:
Prepay service: A prepay service allows a subscriber to pay in advance for the use of specific services, the prepay account
may be updated each time the subscriber uses the services related to that account.
Real time: Time, typically in number of seconds, to perform the on-line mechanism used for fraud control and cost
control.
Session: logical connection between parties involved in a packet switched based communication This term is used for
IP connections rather than the term "call" that is normally used for a connection over conventional (circuit switched)
systems.
Note: Information about charging is typically collected in Charging Data Records (CDR).
Local Charging Zone (LCZ): A logical grouping of a number of cells, where a special tariff applies for a select group
of users. A network may have a number of LCZs. A LCZ does not necessarily need to be aligned with an LA or RA, i.e.
the border of LCZ may not be the border of an LA or RA.
3.2 Abbreviations
For the purposes of the present document the definition of abbreviations in [4] apply.
4 Main Requirements and High Level Principles
The main new requirements for 3GPP system charging and accounting are:
- to provide charging information for all charges incurred and requiring settlement between the different
commercial roles;
- to allow fraud control by the Home Environment and the Serving network;
- to allow cost control by the charged party;
- to provide at the beginning of a chargeable event an indication to the charged party (if involved in the chargeable
event) of the charges to be levied for this event;
- to allow itemised billing for all services charged to each subscription, including voice and data calls, and services
offered by home environments;
- to enable the Home environment to provide a Prepay Service and to enable the serving network to support that
Prepay Service for the Home environment’s subscribers;
- to allow interconnect (inter-operator) charging including mobile/fixed operator to mobile/fixed operator (circuit
switched & IP), and mobile/fixed operator to IP network provider; and mobile/fixed operator to I-WLAN
operator;
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- to allow Network operator to 3 party supplier (e.g. Value Added Service Provider) charging;
- to provide details required for Customer Care purposes;
- to support the shared network architecture so that end users can be appropriately charged for their usage of the
shared network, and network sharing partners can be allocated their share of the costs of the shared network
resources.
The high level principles that will guide the charging requirements are summarised as follows:
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3GPP TS 22.115 version 13.4.0 Release 13 8 ETSI TS 122 115 V13.4.0 (2020-01)
- It shall be possible to charge separately for each type of medium used (e.g. voice, video, data) in a session and
for each service used (e.g. voice call, streaming video, file download);
- It shall be possible to charge for different levels of QoS applied for and/or allocated during a session for each
type of medium or service used;
- It shall be possible to charge each "leg" of a session separately. This includes the incoming and outgoing legs
and any forwarded/redirected legs. (Note: The legs mentioned here are logical legs, i.e. not necessarily identical
to actual signal and traffic flow. Even though tromboning may be avoided by optimal routing, the operator
should still be able to charge for the ‘virtual legs’ of the call);
- It shall be possible to charge unsuccessful calls and sessions (e.g. for billing purposes, to provide the user a full
documentation of his call attempts);
- The user can be charged according to the service used irrespective of the technology used to deliver it. (That is,
the charge is not derived from whether 2G or 3G is used);
- The user can be charged according to the technology used to deliver a service. (That is, different charges can be
applied on 2G and 3G);
- It shall be possible to charge a user according to the network resources used. For example, if a large bandwidth is
required to use high quality video, the user could be charged accordingly. This is related to charging by QoS;
- It shall be possible to charge users flexibly for the use of extra resources (in at least the same network) for all
legs of the call. For example, if a video component is added to a voice call the use of extra radio resource at both
ends of the call could be paid for by each user in the call or totally by the initiating user;
- It shall be possible to suppress charging for certain types of connection e.g. when a customer receives tones or
network announcements or during sessions such as automated pre-pay top-up;
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- It shall be possible to apply different charging based on tariff information provided by a 3 party. This tariff
information may change during the use of the service (e.g. based on menu selection in a voice response menu).
In this case the requirement applies both for customer-charging and interconnect-charging;
- It shall be possible for the home network to charge its customers while roaming in the same ways as when they
are at home. For example, if duration based charging is used for charging for streaming music in the home
network, then it shall be possible to apply the same principle when the user is roaming;
- It shall be possible for operators to have the option to apply charging mechanisms that are used in GSM/GPRS.
For example for duration of a voice call, for the amount of data transmitted (eg for streaming, file download,
browsing) and for an event (one-off charge);
- It shall be possible for a network operator to charge its users for activities while roaming so that the home
network will get the capability to raise service charges depending on the roamed to network, e.g. because of inter
operator charges for the use of service capabilities within the visited network which will in general depend on
the serving network. The ability to supply all the necessary information for all the charging options will depend
on the capability of the visited network. For service capabilities which are provided by the home network,
however, it is required that the charging information is collected to allow to identify the serving network of the
served subscriber;
- It shall be possible for charging to be applied based on location, presence, push services etc.;
- The network may provide information to the UE so that the UE is able to notify and indicate to the user the
LCZs it is in. This allows the user to decide whether to accept/originate the service depending on the LCZs they
are in;
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- It shall be possible to charge using pre-pay, post-pay, advice of charge, 3 party charging techniques;
- It shall be possible for the home network to apply different tariffs to national calls and short messages
established/sent by their subscribers while roaming in their Home PLMN depending on whether or not the called
subscriber’s Home PLMN equals the calling subscriber’s Home PLMN, rather than on the called subscriber’s
MSISDN;
Note: This distinction is necessary only in the case, where the called subscriber's MSISDN may have been
ported by Mobile Number Portability.
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3GPP TS 22.115 version 13.4.0 Release 13 9 ETSI TS 122 115 V13.4.0 (2020-01)
- For circuit switched interconnection only a capability is required to collect information regarding user rate and
user protocol at the interconnection point so that e.g. the identification of CS video telephony at the
interconnection point for inter-network accounting purposes becomes possible.
These new requirements and principles will allow users more freedom to obtain service when roaming, whilst providing
effective cost and credit control for the Home Environment and User.
4.1 Cross Phase Compatibility
Where possible (e.g. services already defined within earlier releases), the charging information collected shall be
consistent with the information already provided
It is envisaged that 3GPP system will evolve beyond this Release with the addition of a number of new requirements for
charging and billing, for example with the addition of a number of new requirements for charging and billing; these are
noted in the appropriate sections below. The technical standards for each release should be developed in such a way that
it is possible and practical to introduce these requirements, ideally in a backward compatible manner.
Note: When a change is introduced which affects the 3GPP technical standards, it is said to be 'backward
compatible' if existing equipment can continue to operate and perform correctly with equipment that
conforms to the new implementation.
4.2 Charging Entity Relationships
In the process of introduction of the all-IP technology there will be a mixture of different types of entities using
different types of technology.
The diagram below shows the different entities involved in charging and their relationships.
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3GPP TS 22.115 version 13.4.0 Release 13 10 ETSI TS 122 115 V13.4.0 (2020-01)


The types of entities and the relevant type of charging as shown on the diagram are as follows:
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- Users: retail charged by Mobile Network Operator or 3 Party Service Provider.
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- 3 Party Service Providers: wholesale charged by Mobile Network Operator.
- Other telecommunications operators: interconnect charging between Mobile Network Operator and non-IP
"circuit-switched" Network Operators for call traffic carried; usage charging between Mobile Network Operator
and IP-based Network Operators for session traffic carried.
- Other mobile operators: roaming charging between these entities, this may require different mechanisms for IP-
based types from the traditional "circuit-switched" types. Also, where mobile operators need to pass traffic to one
another, there will be interconnect charging for non-IP "circuit switched" types; usage charging for IP-based types.
- I-WLAN operators: where I-WLAN operators need to pass traffic to mobile operators or mobile operators to I-
WLAN operators, there may be roaming and usage charging.
- IP backbone carriers: conveyance charging Mobile Network Operators for traffic carried.
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- 3 Party content & application suppliers: supplier charging between Mobile Network Operators and Value
Added Service Providers for information exchanged.
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- 3 Party Portals: access charging between Mobile Network Operators and this entity.
- Internet: charge for capacity of connection between Mobile Network Operator and Internet. An Operator pays a
provider for a connection based on capacity, e.g. annual charge for a 2Mbit/s "pipe".
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3GPP TS 22.115 version 13.4.0 Release 13 11 ETSI TS 122 115 V13.4.0 (2020-01)
4.3 Charging guidelines for IP-Multimedia services
4.3.1 User Charging Requirements
This section describes the options required for the charging of end users. The network operator could charge users
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directly (retail charging) or charge a 3 party service provider (wholesale charging). These requirements can
...