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Content for  TS 32.274  Word version:  17.0.0

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1  ScopeWord‑p. 7

The present document is part of a series of Technical Specifications (TSs) 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 Offline and Online Charging description for the Short Message Service (SMS), based on the functional description in TS 23.040, TS 23.204 for SMS over IP, and TS 23.682 for SMS procedures using T4. The present document does not replace existing offline SMS charging functionality defined for Circuit Switched in TS 32.250 and for Packet Switched in TS 32.251, and therefore is in addition to those specifications. This charging description includes the offline and online charging architecture and scenarios specific to SMS, as well as the mapping of the common 3GPP charging architecture specified in TS 32.240 onto SMS. It further specifies the structure and content of the CDRs for offline charging, and the charging events for online 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 3GPP Diameter application that is used for SMS offline and online charging is specified in TS 32.299.
  • 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.
    Furthermore, requirements that govern the charging work are specified in TS 22.115.
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2  ReferencesWord‑p. 8

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]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 32.240: "Telecommunication management; Charging management; Charging architecture and principles".
[3]
TS 32.298: "Telecommunication management; Charging management; Charging Data Record (CDR) parameter description".
[4]
TS 32.299: "Telecommunication management; Charging management; Diameter charging application".
[5]
TS 32.297: "Telecommunication management; Charging management; Charging Data Record (CDR) file format and transfer".
[6]
TS 32.295: "Telecommunication management; Charging management; Charging Data Record (CDR) transfer".
[7]
TS 23.040: "Technical realization of Short Message Service (SMS)".
[8]
TS 23.204: "Support of Short Message Service (SMS) over generic 3GPP Internet Protocol (IP) access; Stage 2".
[9]
TS 32.250: "Telecommunication management; Charging management; Circuit Switched (CS) domain charging".
[10]
TS 32.251: "Telecommunication management; Charging management; Packet Switched (PS) domain charging".
[11]
TS 32.296: "Telecommunication management; Charging management; Online Charging System (OCS) applications and interfaces".
[12]
RFC 4006:  "Diameter Credit-Control Application".
[13]
TS 32.270: "Telecommunication management; Charging management; Multimedia Messaging Service (MMS) charging".
[14]
TS 23.038: "Alphabets and language-specific information".
[15]
TS 32.260: "Telecommunication management; Charging management; IP Multimedia Services (IMS) charging".
[16]
TS 22.142: "Value Added Services (VAS) for Short Message Service (SMS) requirements".
[17]
TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".
[18]
TS 29.337: "Diameter-based T4 interface for communications with packet data networks and applications".
[19]
TS 32.290: "Telecommunication management; Charging management; 5G system; Services, operations and procedures of charging using Service Based Interface (SBI)".
[20]
TS 32.291: " Telecommunication management; Charging management 5G system; Charging service, stage 3".
[21]-[99]  Void.
[100]-[199]  Void.
[200]
TS 29.338: "Diameter based protocols to support Short Message Service (SMS) capable Mobile Management Entities (MMEs)".
[201]
TS 23.501: "System Architecture for the 5G System".
[202]
TS 23.502: "Procedures for the 5G System".
[203]
TS 29.061: "Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN)".
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3  Definitions and abbreviationsWord‑p. 9

3.1  DefinitionsWord‑p. 9

For the purposes of the present document, the terms and definitions given in TR 21.905, TS 32.240 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 or TS 32.240.
SMS node:
An SMS node, in the present document, refers to either an SMS router, IP-SM-GW, SMS-SC, SMSF or a combination of these nodes.
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3.2  SymbolsWord‑p. 9

For the purposes of the present document, the following symbols apply:
Bsm
Reference point for the CDR file transfer from SMS CGF to the BD,
Ga
Reference point for CDR transfer between a CDF and the CGF.
Nchf
Service based interface exhibited by CHF.
N46
Reference point between SMS Node and the CHF.
Rf
Offline charging reference point between a 3G network element and the CDF.
Ro
Online charging reference point between a 3G network element and the OCS.T4 Reference point used between MTC-IWF and the SMS-SC in the HPLMN.

3.3  Abbreviations |R12|Word‑p. 9

For the purposes of the present document, the abbreviations given in TR 21.905, TS 32.240 and the following apply:
5GS
5G System
ECUR
Event Charging with Unit Reservation
IEC
Immediate Event Charging
PEC
Post Event Charging
NCGI
NR Cell Global Identity

4  Architecture considerationsWord‑p. 10

4.1  High level SMS architectureWord‑p. 10

The high level SMS architecture is as defined in TS 23.040.
Only the SMS Router, SMS-SC, IP-SM-GW and the SMSF are within the scope of the present document.
The details for the other nodes in the SMS architecture are defined in TS 32.250 and TS 32.251.

4.2  SMS offline charging architectureWord‑p. 10

The architecture for SMS offline charging is described in figure 4.2.1
(not reproduced yet)
Figure 4.2.1: SMS offline charging architecture
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The SMS Nodes for which this architecture applies are the SMS-SC and IP-SM-GW.
Details on the interfaces and functions can be found in TS 32.240 for the general architecture components.
The Rf interface is described in clause 6.1.1, Ga in clause 6.1.2, and Bsm in clause 6.1.3 of this document.
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4.3  SMS online charging architectureWord‑p. 10

For online charging, the relevant SMS nodes utilise the Ro interface and application towards the OCS as specified in TS 32.299. The Ro reference point covers all online charging functionality required for SMS.
The SMS online charging architecture is depicted in figure 4.3.1
(not reproduced yet)
Figure 4.3.1: SMS online charging architecture
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Details on the interfaces and functions can be found in TS 32.240 for the general architecture components,
TS 32.296 for the OCS, and TS 32.299 for the Ro application.

4.4  SMS converged charging architecture |R15|Word‑p. 11

Architectural options of Figure 4.4.1 apply to any SMS converged charging architecture of this clause.
(not reproduced yet)
Figure 4.4.1: SMS converged charging architecture
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The SMS Node for which this architecture applies is the SMSF.
The general architecture components can be found in TS 32.240.
Ga is described in clause 5.2.4 and Bsm in clause 5.2.5 of this document, and Nchf is described in TS 32.290.
Figure 4.4.2 depicts the SMS converged charging architecture for non-roaming in reference point representation:
(not reproduced yet)
Figure 4.4.2: SMS converged charging architecture non-roaming reference point representation
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