ETSI TS 129 502 V15.7.0 (2020-04)

5G; 5G System; Session Management Services; Stage 3 (3GPP TS 29.502 version 15.7.0 Release 15)

RTS/TSGC-0429502vf70

General Information

• Status: Published
• Publication Date: 02-Apr-2020
• Technical Committee: 3GPP CT 4 - MAP/CAMEL/GTP/BCH/SS/TrFO/IMS/GUP/WLAN (formely CN4)
• Current Stage: 12 - Completion
• Completion Date: 03-Apr-2020

Standards Content (Sample)

ETSI TS 129 502 V15.7.0 (2020-04)






TECHNICAL SPECIFICATION
5G;
5G System;
Session Management Services;
Stage 3
(3GPP TS 29.502 version 15.7.0 Release 15)

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3GPP TS 29.502 version 15.7.0 Release 15 1 ETSI TS 129 502 V15.7.0 (2020-04)



Reference
RTS/TSGC-0429502vf70
Keywords
5G
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3GPP TS 29.502 version 15.7.0 Release 15 2 ETSI TS 129 502 V15.7.0 (2020-04)
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
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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
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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
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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 29.502 version 15.7.0 Release 15 3 ETSI TS 129 502 V15.7.0 (2020-04)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 8
2 References . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Overview . 9
4.1 Introduction . 9
5 Services offered by the SMF . 10
5.1 Introduction . 10
5.2 Nsmf_PDUSession Service . 10
5.2.1 Service Description . 10
5.2.2 Service Operations . 11
5.2.2.1 Introduction . 11
5.2.2.2 Create SM Context service operation . 11
5.2.2.2.1 General . 11
5.2.2.2.2 EPS to 5GS Idle mode mobility using N26 interface . 13
5.2.2.2.3 EPS to 5GS Handover Preparation using N26 interface . 15
5.2.2.3 Update SM Context service operation. 16
5.2.2.3.1 General . 16
5.2.2.3.2 Activation and Deactivation of the User Plane connection of a PDU session . 17
5.2.2.3.2.1 General . 17
5.2.2.3.2.2 Activation of User Plane connectivity of a PDU session . 18
5.2.2.3.2.3 Deactivation of User Plane connectivity of a PDU session . 19
5.2.2.3.2.4 Changing the access type of a PDU session from non-3GPP access to 3GPP access during
a Service Request procedure . 20
5.2.2.3.3 Xn Handover . 20
5.2.2.3.4 N2 Handover . 22
5.2.2.3.4.1 General . 22
5.2.2.3.4.2 N2 Handover Preparation . 22
5.2.2.3.4.3 N2 Handover Execution . 24
5.2.2.3.4.4 N2 Handover Cancellation . 25
5.2.2.3.5 Handover between 3GPP and untrusted non-3GPP access procedures . 26
5.2.2.3.5.1 General . 26
5.2.2.3.5.2 Handover of a PDU session without AMF change or with target AMF in same PLMN . 26
5.2.2.3.6 Inter-AMF change or mobility . 26
5.2.2.3.7 RAN Initiated QoS Flow Mobility . 27
5.2.2.3.8 EPS to 5GS Handover using N26 interface . 28
5.2.2.3.8.1 General . 28
5.2.2.3.8.2 EPS to 5GS Handover Preparation . 28
5.2.2.3.8.3 EPS to 5GS Handover Execution . 28
5.2.2.3.8.4 EPS to 5GS Handover Cancellation . 29
5.2.2.3.9 5GS to EPS Handover using N26 interface . 29
5.2.2.3.10 P-CSCF Restoration Procedure via AMF . 29
5.2.2.3.11 AMF requested PDU Session Release due to duplicated PDU Session Id . 29
5.2.2.3.12 AMF requested PDU Session Release due to slice not available . 30
5.2.2.4 Release SM Context service operation . 30
5.2.2.4.1 General . 30
5.2.2.5 Notify SM Context Status service operation . 31
5.2.2.5.1 General . 31
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3GPP TS 29.502 version 15.7.0 Release 15 4 ETSI TS 129 502 V15.7.0 (2020-04)
5.2.2.6 Retrieve SM Context service operation. 32
5.2.2.6.1 General . 32
5.2.2.7 Create service operation . 33
5.2.2.7.1 General . 33
5.2.2.7.2 EPS to 5GS Idle mode mobility . 35
5.2.2.7.3 EPS to 5GS Handover Preparation . 36
5.2.2.8 Update service operation . 37
5.2.2.8.1 General . 37
5.2.2.8.2 Update service operation towards H-SMF. 37
5.2.2.8.2.1 General . 37
5.2.2.8.2.2 UE or visited network requested PDU session modification . 38
5.2.2.8.2.3 UE requested PDU session release . 38
5.2.2.8.2.4 EPS to 5GS Handover Execution . 38
5.2.2.8.2.5 Handover between 3GPP and untrusted non-3GPP access (Home Routed PDU session) . 39
5.2.2.8.2.6 P-CSCF Restoration Procedure via AMF (Home Routed PDU session) . 39
5.2.2.8.3 Update service operation towards V-SMF. 39
5.2.2.8.3.1 General . 39
5.2.2.8.3.2 Home network requested PDU session modification . 40
5.2.2.8.3.3 Home network requested PDU session release . 41
5.2.2.8.3.4 Handover between 3GPP and untrusted non-3GPP access, from 5GC-N3IWF to EPS or

from 5GS to EPC/ePDG . 41
5.2.2.8.3.5 EPS Bearer ID assignment . 42
5.2.2.9 Release service operation . 42
5.2.2.9.1 General . 42
5.2.2.10 Notify Status service operation . 43
5.2.2.10.1 General . 43
5.2.3 General procedures . 44
5.2.3.1 Transfer of NAS SM information between UE and H-SMF for Home Routed PDU sessions . 44
5.2.3.1.1 General . 44
5.2.3.1.2 V-SMF Behaviour . 44
5.2.3.1.3 H-SMF Behaviour . 45
6 API Definitions . 45
6.1 Nsmf_PDUSession Service API . 45
6.1.1 API URI . 45
6.1.2 Usage of HTTP . 45
6.1.2.1 General . 45
6.1.2.2 HTTP standard headers . 45
6.1.2.2.1 General . 45
6.1.2.2.2 Content type . 46
6.1.2.3 HTTP custom headers . 46
6.1.2.3.1 General . 46
6.1.2.4 HTTP multipart messages . 46
6.1.2.5 HTTP/2 request retries . 47
6.1.3 Resources . 47
6.1.3.1 Overview . 47
6.1.3.2 Resource: SM contexts collection . 49
6.1.3.2.1 Description . 49
6.1.3.2.2 Resource Definition . 49
6.1.3.2.3 Resource Standard Methods . 49
6.1.3.2.3.1 POST. 49
6.1.3.2.4 Resource Custom Operations . 51
6.1.3.3 Resource: Individual SM context . 52
6.1.3.3.1 Description . 52
6.1.3.3.2 Resource Definition . 52
6.1.3.3.3 Resource Standard Methods . 52
6.1.3.3.4 Resource Custom Operations . 52
6.1.3.3.4.1 Overview . 52
6.1.3.3.4.2 Operation: modify . 52
6.1.3.3.4.2.1 Description . 52
6.1.3.3.4.2.2 Operation Definition . 52
6.1.3.3.4.3 Operation: release . 53
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3GPP TS 29.502 version 15.7.0 Release 15 5 ETSI TS 129 502 V15.7.0 (2020-04)
6.1.3.3.4.3.1 Description . 53
6.1.3.3.4.3.2 Operation Definition . 53
6.1.3.3.4.4 Operation: retrieve . 54
6.1.3.3.4.4.1 Description . 54
6.1.3.3.4.4.2 Operation Definition . 54
6.1.3.5 Resource: PDU sessions collection (H-SMF) . 54
6.1.3.5.1 Description . 54
6.1.3.5.2 Resource Definition . 54
6.1.3.5.3 Resource Standard Methods . 55
6.1.3.5.3.1 POST. 55
6.1.3.5.4 Resource Custom Operations . 57
6.1.3.5.4.1 Overview . 57
6.1.3.6 Resource: Individual PDU session (H-SMF) . 57
6.1.3.6.1 Description . 57
6.1.3.6.2 Resource Definition . 57
6.1.3.6.3 Resource Standard Methods . 57
6.1.3.6.4 Resource Custom Operations . 57
6.1.3.6.4.1 Overview . 57
6.1.3.6.4.2 Operation: modify . 57
6.1.3.6.4.2.1 Description . 57
6.1.3.6.4.2.2 Operation Definition . 57
6.1.3.6.4.3 Operation: release . 58
6.1.3.6.4.3.1 Description . 58
6.1.3.6.4.3.2 Operation Definition . 58
6.1.3.7 Resource: Individual PDU session (V-SMF) . 59
6.1.3.7.1 Description . 59
6.1.3.7.2 Resource Definition . 59
6.1.3.7.3 Resource Standard Methods . 59
6.1.3.7.3.1 POST. 59
6.1.3.7.4 Resource Custom Operations . 60
6.1.3.7.4.1 Overview . 60
6.1.3.7.4.2 Operation: modify . 60
6.1.3.7.4.2.1 Description . 60
6.1.3.7.4.2.2 Operation Definition . 60
6.1.4 Custom Operations without associated resources . 61
6.1.5 Notifications . 61
6.1.5.1 General . 61
6.1.5.2 SM Context Status Notification . 62
6.1.5.2.1 Description . 62
6.1.5.2.2 Notification Definition . 62
6.1.6 Data Model . 62
6.1.6.1 General . 62
6.1.6.2 Structured data types . 64
6.1.6.2.1 Introduction . 64
6.1.6.2.2 Type: SmContextCreateData . 65
6.1.6.2.3 Type: SMContextCreatedData . 69
6.1.6.2.4 Type: SMContextUpdateData . 70
6.1.6.2.5 Type: SMContextUpdatedData . 75
6.1.6.2.6 Type: SMContextReleaseData . 76
6.1.6.2.7 Type: SMContextRetrieveData . 77
6.1.6.2.8 Type: SMContextStatusNotification .
...