ETSI TS 129 523 V17.7.0 (2022-07)
5G; 5G System; Policy Control Event Exposure Service; Stage 3 (3GPP TS 29.523 version 17.7.0 Release 17)
5G; 5G System; Policy Control Event Exposure Service; Stage 3 (3GPP TS 29.523 version 17.7.0 Release 17)
RTS/TSGC-0329523vh70
General Information
Standards Content (Sample)
ETSI TS 129 523 V17.7.0 (2022-07)
TECHNICAL SPECIFICATION
5G;
5G System;
Policy Control Event Exposure Service;
Stage 3
(3GPP TS 29.523 version 17.7.0 Release 17)
---------------------- Page: 1 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 1 ETSI TS 129 523 V17.7.0 (2022-07)
Reference
RTS/TSGC-0329523vh70
Keywords
5G
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure Program:
https://www.etsi.org/standards/coordinated-vulnerability-disclosure
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
No representation or warranty is made that this deliverable is technically accurate or sufficient or conforms to any law
and/or governmental rule and/or regulation and further, no representation or warranty is made of merchantability or fitness
for any particular purpose or against infringement of intellectual property rights.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.
Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2022.
All rights reserved.
ETSI
---------------------- Page: 2 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 2 ETSI TS 129 523 V17.7.0 (2022-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are 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 Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
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.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
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
---------------------- Page: 3 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 3 ETSI TS 129 523 V17.7.0 (2022-07)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
2 References . 6
3 Definitions, symbols and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Npcf_EventExposure Service . 8
4.1 Service Description . 8
4.1.1 Overview . 8
4.1.2 Service Architecture . 8
4.1.3 Network Functions . 9
4.1.3.1 Policy Control Function (PCF) . 9
4.1.3.2 NF Service Consumers . 9
4.2 Service Operations . 10
4.2.1 Introduction. 10
4.2.2 Npcf_EventExposure_Subscribe service operation . 10
4.2.2.1 General . 10
4.2.2.2 Creating a new subscription . 11
4.2.2.3 Modifying an existing subscription . 12
4.2.3 Npcf_EventExposure_UnSubscribe service operation . 14
4.2.3.1 General . 14
4.2.3.2 Unsubscription from event notifications . 14
4.2.4 Npcf_EventExposure_Notify service operation . 14
4.2.4.1 General . 14
4.2.4.2 Notification about subscribed events . 15
5 Npcf_EventExposure Service API . 17
5.1 Introduction . 17
5.2 Usage of HTTP . 17
5.2.1 General . 17
5.2.2 HTTP standard headers . 17
5.2.2.1 General . 17
5.2.2.2 Content type . 17
5.2.3 HTTP custom headers . 18
5.2.3.1 General . 18
5.3 Resources . 18
5.3.1 Resource Structure . 18
5.3.2 Resource: Policy Control Events Subscriptions (Collection) . 18
5.3.2.1 Description . 18
5.3.2.2 Resource definition . 19
5.3.2.3 Resource Standard Methods . 19
5.3.2.3.1 POST . 19
5.3.2.4 Resource Custom Operations . 19
5.3.3 Resource: Individual Policy Control Events Subscription (Document) . 19
5.3.3.1 Description . 19
5.3.3.2 Resource definition . 20
5.3.3.3 Resource Standard Methods . 20
5.3.3.3.1 GET . 20
5.3.3.3.2 PUT . 21
5.3.3.3.3 DELETE . 22
5.3.3.4 Resource Custom Operations . 23
ETSI
---------------------- Page: 4 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 4 ETSI TS 129 523 V17.7.0 (2022-07)
5.4 Custom Operations without associated resources. 23
5.5 Notifications . 23
5.5.1 General . 23
5.5.2 Policy Control Event Notification . 23
5.5.2.1 Description . 23
5.5.2.2 Target URI . 23
5.5.2.3 Standard Methods . 24
5.5.2.3.1 POST . 24
5.6 Data Model . 25
5.6.1 General . 25
5.6.2 Structured data types . 26
5.6.2.1 Introduction . 26
5.6.2.2 Type PcEventExposureSubsc . 27
5.6.2.3 Type PcEventExposureNotif . 28
5.6.2.4 Type ReportingInformation. 29
5.6.2.5 Type ServiceIdentification . 30
5.6.2.6 Type EthernetFlowInfo . 30
5.6.2.7 Type IpFlowInfo . 30
5.6.2.8 Type PcEventNotification . 31
5.6.2.9 Type PduSessionInformation . 32
5.6.2.10 Type SnssaiDnnCombination . 32
5.6.3 Simple data types and enumerations . 32
5.6.3.1 Introduction . 32
5.6.3.2 Simple data types . 32
5.6.3.3 Enumeration: PcEvent . 32
5.7 Error handling . 33
5.7.1 General . 33
5.7.2 Protocol Errors . 33
5.7.3 Application Errors . 33
5.8 Feature negotiation . 33
5.9 Security . 34
Annex A (normative): OpenAPI specification . 35
A.1 General . 35
A.2 Npcf_EventExposure API . 35
Annex B (informative): Change history . 42
History . 45
ETSI
---------------------- Page: 5 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 5 ETSI TS 129 523 V17.7.0 (2022-07)
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
---------------------- Page: 6 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 6 ETSI TS 129 523 V17.7.0 (2022-07)
1 Scope
The present document specifies the stage 3 protocol and data model for the Policy Control Event Exposure Service of
the 5G System. It provides stage 3 protocol definitions, message flows and specifies the API for the Npcf Event
Exposure service.
The 5G System stage 2 architecture and the procedures are specified in 3GPP TS 23.501 [2], 3GPP TS 23.502 [3] and
3GPP TS 23.503 [4].
The 5G System stage 3 call flows are provided in 3GPP TS 29.513 [8].
The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition
are specified in 3GPP TS 29.500 [5] and 3GPP TS 29.501 [6].
The Policy Control Event Exposure Service is provided by the Policy Control Function (PCF). This service exposes
policy control events observed at the PCF.
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 TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 23.501: "System Architecture for the 5G System; Stage 2".
[3] 3GPP TS 23.502: "Procedures for the 5G System; Stage 2".
[4] 3GPP TS 23.503: "Policy and Charging Control Framework for the 5G System; Stage 2".
[5] 3GPP TS 29.500: "5G System; Technical Realization of Service Based Architecture; Stage 3".
[6] 3GPP TS 29.501: "5G System; Principles and Guidelines for Services Definition; Stage 3".
[7] OpenAPI: "OpenAPI Specification Version 3.0.0", https://spec.openapis.org/oas/v3.0.0.
[8] 3GPP TS 29.513: "5G System; Policy and Charging Control signalling flows and QoS parameter
mapping; Stage 3".
[9] 3GPP TS 29.512: "5G System; Session Management Policy Control Service; Stage 3".
[10] 3GPP TS 29.507: "5G System; Access and Mobility Policy Control Service; Stage 3".
[11] 3GPP TS 29.525: "5G System; UE Policy Control Service; Stage 3".
[12] 3GPP TS 29.514: "5G System; Policy Authorization Service; Stage 3".
[13] 3GPP TS 29.214: "Policy and Charging Control over Rx reference point".
[14] 3GPP TS 29.571: "5G System; Common Data Types for Service Based Interfaces; Stage 3".
[15] 3GPP TS 29.508: "5G System; Session Management Event Exposure Service; Stage 3".
[16] IETF RFC 7540: "Hypertext Transfer Protocol Version 2 (HTTP/2)".
ETSI
---------------------- Page: 7 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 7 ETSI TS 129 523 V17.7.0 (2022-07)
[17] IETF RFC 8259: "The JavaScript Object Notation (JSON) Data Interchange Format".
[18] IETF RFC 7807: "Problem Details for HTTP APIs".
[19] 3GPP TS 33.501: "Security architecture and procedures for 5G system".
[20] IETF RFC 6749: "The OAuth 2.0 Authorization Framework".
[21] 3GPP TS 29.510: "5G System; Network Function Repository Services; Stage 3".
[22] 3GPP TR 21.900: "Technical Specification Group working methods".
[23] 3GPP TS 29.534: "5G System; Access and Mobility Policy Authorization Service; Stage 3".
[24] 3GPP TS 29.519: "5G System; Usage of the Unified Data Repository service for Policy Data,
Application Data and Structured Data for Exposure; Stage 3".
[25] 3GPP TS 29.522: "5G System; Network Exposure Function Northbound APIs; Stage 3".
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 [1] 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 [1].
example: text used to clarify abstract rules by applying them literally.
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] 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 [1].
AF Application Function
AMF Access and Mobility Management Function
API Application Programming Interface
ATSSS Access Traffic Steering, Switching and Splitting
DNN Data Network Name
ePDG evolved Packet Data Gateway
GEO Geosynchronous Orbit
GPSI Generic Public Subscription Identifier
HTTP Hypertext Transfer Protocol
LEO Low Earth Orbit
MA Multi-Access
MEO Medium Earth Orbit
NEF Network Exposure Function
NID Network Identifier
NF Network Function
NRF Network Repository Function
NWDAF Network Data Analytics Function
OAM Operation And Maintenance
PCF Policy Control Function
RFSP RAT Frequency Selection Priority
SAC Service Area Coverage
S-NSSAI Single Network Slice Selection Assistance Information
SMF Session Management Function
SNPN Stand-alone Non-Public Network
SUPI Subscription Permanent Identifier
ETSI
---------------------- Page: 8 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 8 ETSI TS 129 523 V17.7.0 (2022-07)
UDM Unified Data Management
UDR Unified Data Repository
URSP UE Route Selection Policy
4 Npcf_EventExposure Service
4.1 Service Description
4.1.1 Overview
The Policy Event Exposure Service, as defined in 3GPP TS 23.502 [3] and 3GPP TS 23.503 [4], is provided by the
Policy Control Function (PCF).
This service:
- allows NF service consumers to subscribe to, modify and unsubscribe from policy control events; and
- notifies NF service consumers with a corresponding subscription about observed events on the PCF.
The types of observed events include:
- PLMN identifier notification;
NOTE: Within the PLMN identifier notification event the PLMN Identifier or SNPN Identifier where the UE is
currently located is provided. The SNPN Identifier consists of the PLMN Identifier and the NID.
- Access type change;
- Satellite backhaul category change;
- Service area coverage change; and
- Successful or unsuccessful outcome of the UE Policy Delivery.
The target of the event reporting may include a group of UE(s) or any UE (i.e. all UEs). When an event occurs, to which
the NF service consumer has subscribed, the PCF reports the requested information to the NF service consumer based
on the event reporting information definition requested by the NF service consumer (see 3GPP TS 23.502 [3],
clause 4.15.1).
4.1.2 Service Architecture
The 5G System Architecture is defined in 3GPP TS 23.501 [2]. The Policy and Charging related 5G architecture and
signalling flows are also described in 3GPP TS 29.513 [8].
The Policy Event Exposure Service (Npcf_EventExposure) is part of the Npcf service-based interface exhibited by the
Policy Control Function (PCF).
The only known NF service consumer of the Npcf_EventExposure service is the Network Exposure Function (NEF).
The Npcf_EventExposure service is provided by the PCF and consumed by NF service consumers (e.g. NEF), as shown
in figure 4.1.2-1 for the SBI representation model and in figure 4.1.2-2 for reference point representation model.
ETSI
---------------------- Page: 9 ----------------------
3GPP TS 29.523 version 17.7.0 Release 17 9 ETSI TS 129 523 V17.7.0 (2022-07)
PCF
Npcf
Npcf_EventExposure
NEF
Figure 4.1.2-1: Npcf_EventExposure service Architecture, SBI representation
PCF
N30
NEF
Figure 4.1.2-2: Npcf_EventExposure service Architecture, reference point representation
NOTE: The NWDAF and the DCCF can be consumers of the Npcf_EventExposure service to perform data
collection. However, there is no data collected from the PCF by the NWDAF or the DCCF defined in this
release of the specification.
4.1.3 Network Functions
4.1.3.1 Policy Control Function (PCF)
The PCF (Policy Co
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.