ETSI TS 129 521 V17.5.0 (2022-07)

5G; 5G System; Binding Support Management Service; Stage 3 (3GPP TS 29.521 version 17.5.0 Release 17)

RTS/TSGC-0329521vh50

General Information

• Status: Published
• Publication Date: 04-Jul-2022
• Technical Committee: 3GPP CT 3 - Interworking with external networks (formely CN3)
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 05-Jul-2022

Standards Content (Sample)

ETSI TS 129 521 V17.5.0 (2022-07)






TECHNICAL SPECIFICATION
5G;
5G System;
Binding Support Management Service;
Stage 3
(3GPP TS 29.521 version 17.5.0 Release 17)



---------------------- Page: 1 ----------------------
3GPP TS 29.521 version 17.5.0 Release 17 1 ETSI TS 129 521 V17.5.0 (2022-07)

Reference
RTS/TSGC-0329521vh50
Keywords
5G
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

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 29.521 version 17.5.0 Release 17 2 ETSI TS 129 521 V17.5.0 (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 29.521 version 17.5.0 Release 17 3 ETSI TS 129 521 V17.5.0 (2022-07)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 6
1 Scope . 7
2 References . 7
3 Definitions and abbreviations . 8
3.1 Definitions . 8
3.2 Abbreviations . 8
4 Binding Support Management Service . 8
4.1 Service Description . 8
4.1.1 Overview . 8
4.1.2 Service Architecture . 9
4.1.3 Network Functions . 10
4.1.3.1 Binding Support Function (BSF) . 10
4.1.3.2 NF Service Consumers . 10
4.2 Service Operations . 11
4.2.1 Introduction. 11
4.2.2 Nbsf_Management_Register Service Operation . 12
4.2.2.1 General . 12
4.2.2.2 Register a new PCF for a PDU Session binding information. 12
4.2.2.3 Register a new PCF for a UE binding information . 15
4.2.3 Nbsf_Management_Deregister Service Operation . 16
4.2.3.1 General . 16
4.2.3.2 Deregister an individual PCF for a PDU Session binding information . 16
4.2.3.3 Deregister an individual PCF for a UE binding information . 17
4.2.4 Nbsf_Management_Discovery Service Operation . 17
4.2.4.1 General . 17
4.2.4.2 Retrieve the PCF binding information for a PDU session. 18
4.2.4.3 Retrieve the PCF binding information for a UE . 19
4.2.5 Nbsf_Management_Update Service Operation. 19
4.2.5.1 General . 19
4.2.5.2 Update an existing PCF for a PDU Session binding information . 20
4.2.5.3 Update an existing PCF for a UE binding information . 21
4.2.6 Nbsf_Management_Subscribe Service Operation . 22
4.2.6.1 General . 22
4.2.6.2 Creating a new subscription . 22
4.2.6.3 Modifying an existing subscription . 23
4.2.7 Nbsf_Management_Unsubscribe Service Operation . 24
4.2.7.1 General . 24
4.2.7.2 Unsubscription from event notifications . 24
4.2.8 Nbsf_Management_Notify Service Operation . 25
4.2.8.1 General . 25
4.2.8.2 Notification about subscribed events . 25
5 Nbsf_Management Service API . 27
5.1 Introduction . 27
5.2 Usage of HTTP . 27
5.2.1 General . 27
5.2.2 HTTP standard headers . 27
5.2.2.1 General . 27
5.2.2.2 Content type . 28
5.2.3 HTTP custom headers . 28
5.2.3.1 General . 28
ETSI

---------------------- Page: 4 ----------------------
3GPP TS 29.521 version 17.5.0 Release 17 4 ETSI TS 129 521 V17.5.0 (2022-07)
5.3 Resources . 28
5.3.1 Resource Structure . 28
5.3.2 Resource: PCF for a PDU Session Bindings . 30
5.3.2.1 Description . 30
5.3.2.2 Resource definition . 30
5.3.2.3 Resource Standard Methods . 31
5.3.2.3.1 POST . 31
5.3.2.3.2 GET . 31
5.3.3 Resource: Individual PCF for a PDU Session Binding . 32
5.3.3.1 Description . 32
5.3.3.2 Resource definition . 32
5.3.3.3 Resource Standard Methods . 33
5.3.3.3.1 DELETE . 33
5.3.3.3.2 PATCH . 34
5.3.4 Resource: Binding Subscriptions . 35
5.3.4.1 Description . 35
5.3.4.2 Resource definition . 35
5.3.4.3 Resource Standard Methods . 35
5.3.4.3.1 POST . 35
5.3.4.4 Resource Custom Operations . 36
5.3.5 Resource: Individual Binding Subscription . 36
5.3.5.1 Description . 36
5.3.5.2 Resource definition . 36
5.3.5.3 Resource Standard Methods . 36
5.3.5.3.1 PUT . 36
5.3.5.3.2 DELETE . 37
5.3.6 Resource Custom Operations . 38
5.3.7 Resource: PCF for a UE Bindings . 38
5.3.7.1 Description . 38
5.3.7.2 Resource definition . 38
5.3.7.3 Resource Standard Methods . 39
5.3.7.3.1 POST . 39
5.3.7.3.2 GET . 39
5.3.8 Resource: Individual PCF for a UE Binding . 40
5.3.8.1 Description . 40
5.3.8.2 Resource definition . 40
5.3.8.3 Resource Standard Methods . 40
5.3.8.3.1 DELETE . 40
5.3.8.3.2 PATCH . 41
5.4 Custom Operations without associated resources. 42
5.5 Notifications . 42
5.5.1 General . 42
5.5.2 BSF Notification . 42
5.5.2.1 Description . 42
5.5.2.2 Target URI . 43
5.5.2.3 Standard Methods . 43
5.5.2.3.1 POST . 43
5.6 Data Model . 44
5.6.1 General . 44
5.6.2 Structured data types . 45
5.6.2.1 Introduction . 45
5.6.2.2 Type PcfBinding . 46
5.6.2.3 Type PcfBindingPatch . 48
5.6.2.4 Type ParameterCombination. 49
5.6.2.5 Type ExtProblemDetails . 49
5.6.2.6 Type BindingRe sp . 49
5.6.2.7 Type BsfSubscription . 50
5.6.2.8 Type BsfNotification . 50
5.6.2.9 Type BsfEventNotification . 51
5.6.2.10 Type PcfForUeBinding . 52
5.6.2.11 Type PcfForUeBindingPatch . 52
5.6.2.12 Type SnssaiDnnPair . 52
ETSI

---------------------- Page: 5 ----------------------
3GPP TS 29.521 version 17.5.0 Release 17 5 ETSI TS 129 521 V17.5.0 (2022-07)
5.6.2.13 Type PcfForUeInfo . 53
5.6.2.14 Type PcfForPduSessionInfo . 53
5.6.3 Simple data types and enumerations . 53
5.6.3.1 Introduction . 53
5.6.3.2 Simple data types . 53
5.6.3.3 Enumeration: BindingLevel . 54
5.6.3.4 Void. 54
5.6.3.5 Enumeration: BsfEvent . 54
5.6.4 Data types describing alternative data types or combinations of data types . 54
5.6.4.1 Type: BsfSubscriptionResp . 54
5.7 Error handling . 55
5.7.1 General . 55
5.7.2 Protocol Errors . 55
5.7.3 Application Errors . 55
5.8 Feature negotiation . 55
5.9 Security . 56
Annex A (normative): OpenAPI specification . 57
A.1 General . 57
A.2 Nbsf_Management API . 57
Annex B (informative): Deployment option to support BSF and DRA coexistence due to
network migration . 71
Annex C (informative): Change history . 72
History . 76

ETSI

---------------------- Page: 6 ----------------------
3GPP TS 29.521 version 17.5.0 Release 17 6 ETSI TS 129 521 V17.5.0 (2022-07)
Foreword
rd
This Technical Specification 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.
ETSI

---------------------- Page: 7 ----------------------
3GPP TS 29.521 version 17.5.0 Release 17 7 ETSI TS 129 521 V17.5.0 (2022-07)
1 Scope
The present specification provides the stage 3 definition of the Binding Support Management Service of the 5G System.
The 5G System Architecture is defined in 3GPP TS 23.501 [2]. The stage 2 definition and related procedures for
Binding Support Management Service is specified in 3GPP TS 23.502 [3] and 3GPP TS 23.503 [4].
The 5G System stage 3 call flows are provide
...