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TS 29.502 (CT4) ★
5GS — Session Management Services

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V16.1.1 (Wzip)  2019/09  186 p.
V15.5.1 (PDF)  2019/09  152 p.

Symbolic representation of 5GS Nsmf services

Rapporteur:  Mr. Landais, Bruno
See also:
TS 29.508  for the Nsmf_EventExposure Service
The present document specifies the stage 3 protocol and data model for the Nsmf Service Based Interface. It provides stage 3 protocol definitions and message flows, and specifies the API for the following service:
  • Nsmf_PDUSession

full Table of Contents for  TS 29.502  Word version:   16.1.0

 

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1 Scope  2 References  3 Definitions and abbreviations  4 Overview  5 Services offered by the SMF  6 API Definitions  A [N] OpenAPI specification  B HTTP Multipart Messages  C Change history 

 

1  Scope  Word-p. 9
2  References
3  Definitions and abbreviations  Word-p. 10
3.1  Definitions
3.2  Abbreviations
4  Overview  Word-p. 11
4.1  Introduction
5  Services offered by the SMF
5.1  Introduction
5.2  Nsmf_PDUSession Service  Word-p. 12
5.2.1  Service Description  Up
5.2.2  Service Operations  Word-p. 13
5.2.2.1  Introduction
5.2.2.2  Create SM Context service operation
5.2.2.2.1  General
5.2.2.2.2  EPS to 5GS Idle mode mobility using N26 interface  Word-p. 16
5.2.2.2.3  EPS to 5GS Handover Preparation using N26 interface  Word-p. 17
5.2.2.2.4  I-SMF Insertion, Change or Removal during Xn based Handover [R16]  Word-p. 19
5.2.2.2.5  I-SMF Insertion, Change or Removal during N2 based Handover [R16]
5.2.2.2.6  Service Request with I-SMF insertion/change/removal or with V-SMF change [R16]
5.2.2.2.7  Registration procedure for a UE with a PDU session with I-SMF insertion, change and removal [R16]  Word-p. 20
5.2.2.3  Update SM Context service operation  Word-p. 21
5.2.2.3.1  General
5.2.2.3.2  Activation and Deactivation of the User Plane connection of a PDU session  Word-p. 22
5.2.2.3.2.1  General
5.2.2.3.2.2  Activation of User Plane connectivity of a PDU session  Word-p. 23
5.2.2.3.2.3  Deactivation of User Plane connectivity of a PDU session  Word-p. 24
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  Word-p. 25
5.2.2.3.3  Xn Handover
5.2.2.3.4  N2 Handover  Word-p. 27
5.2.2.3.4.1  General  Up
5.2.2.3.4.2  N2 Handover Preparation
5.2.2.3.4.3  N2 Handover Execution  Word-p. 29
5.2.2.3.4.4  N2 Handover Cancellation  Word-p. 30
5.2.2.3.5  Handover between 3GPP and untrusted non-3GPP access procedures
5.2.2.3.5.1  General
5.2.2.3.5.2  Handover of a PDU session without AMF change or with target AMF in same PLMN
5.2.2.3.6  Inter-AMF change or mobility  Word-p. 31
5.2.2.3.7  RAN Initiated QoS Flow Mobility  Word-p. 32
5.2.2.3.8  EPS to 5GS Handover using N26 interface
5.2.2.3.8.1  General  Up
5.2.2.3.8.2  EPS to 5GS Handover Preparation
5.2.2.3.8.3  EPS to 5GS Handover Execution  Word-p. 33
5.2.2.3.8.4  EPS to 5GS Handover Cancellation
5.2.2.3.9  5GS to EPS Handover using N26 interface
5.2.2.3.10  P-CSCF Restoration Procedure via AMF  Word-p. 34
5.2.2.3.11  AMF requested PDU Session Release due to duplicated PDU Session Id
5.2.2.3.12  AMF requested PDU Session Release due to slice not available  Word-p. 35
5.2.2.3.13  Indirect Data Forwarding Tunnel establishment during N2 based Handover with I-SMF [R16]
5.2.2.3.14  Request to forward buffered downlink data packets at I-UPF [R16]  Word-p. 36
5.2.2.4  Release SM Context service operation  Up
5.2.2.4.1  General
5.2.2.5  Notify SM Context Status service operation  Word-p. 37
5.2.2.5.1  General
5.2.2.6  Retrieve SM Context service operation  Word-p. 39
5.2.2.6.1  General
5.2.2.7  Create service operation  Word-p. 40
5.2.2.7.1  General
5.2.2.7.2  EPS to 5GS Idle mode mobility  Word-p. 42
5.2.2.7.3  EPS to 5GS Handover Preparation  Word-p. 43
5.2.2.8  Update service operation  Up
5.2.2.8.1  General
5.2.2.8.2  Update service operation towards H-SMF or SMF  Word-p. 44
5.2.2.8.2.1  General
5.2.2.8.2.2  UE or network (e.g. AMF, V-SMF, I-SMF) requested PDU session modification  Word-p. 45
5.2.2.8.2.3  UE requested PDU session release  Word-p. 46
5.2.2.8.2.4  EPS to 5GS Handover Execution
5.2.2.8.2.5  Handover between 3GPP and untrusted non-3GPP access
5.2.2.8.2.6  P-CSCF Restoration Procedure via AMF
5.2.2.8.2.7  Addition of PSA and BP or UL CL controlled by I-SMF [R16]  Word-p. 47
5.2.2.8.2.8  Removal of PSA and BP or UL CL controlled by I-SMF [R16]  Up
5.2.2.8.2.9  Change of PSA for IPv6 multi-homing or UL CL controlled by I-SMF [R16]  Word-p. 48
5.2.2.8.2.10  PDU Session modification with I-SMF or V-SMF change [R16]
5.2.2.8.3  Update service operation towards V-SMF or I-SMF  Word-p. 49
5.2.2.8.3.1  General
5.2.2.8.3.2  Network (e.g. H-SMF, SMF) requested PDU session modification
5.2.2.8.3.3  Network (e.g. H-SMF, SMF) requested PDU session release  Word-p. 50
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
5.2.2.8.3.5  EPS Bearer ID assignment  Word-p. 51
5.2.2.9  Release service operation
5.2.2.9.1  General  Up
5.2.2.10  Notify Status service operation  Word-p. 52
5.2.2.10.1  General
5.2.3  General procedures  Word-p. 53
5.2.3.1  Transfer of NAS SM information between UE and H-SMF for Home Routed PDU sessions
5.2.3.1.1  General
5.2.3.1.2  V-SMF Behaviour
5.2.3.1.3  H-SMF Behaviour  Word-p. 54
5.2.3.2  Transfer of NAS SM information between UE and SMF for PDU sessions with an I-SMF [R16]
5.2.3.2.1  General
5.2.3.3  Detection and handling of late arriving requests [R16]  Up
5.2.3.3.1  Handling of requests which collide with an existing SM context or PDU session context
5.2.3.3.1.1  General
5.2.3.3.1.2  Principles  Word-p. 55
5.2.3.3.2  Detection and handling of requests which have timed out at the HTTP client
5.2.3.3.2.1  General
6  API Definitions
6.1  Nsmf_PDUSession Service API
6.1.1  API URI
6.1.2  Usage of HTTP  Word-p. 56
6.1.2.1  General  Up
6.1.2.2  HTTP standard headers
6.1.2.2.1  General
6.1.2.2.2  Content type
6.1.2.3  HTTP custom headers  Word-p. 57
6.1.2.3.1  General
6.1.2.3.2  3gpp-Sbi-Origination-Timestamp [R16]
6.1.2.4  HTTP multipart messages
6.1.2.5  HTTP/2 request retries  Word-p. 58
6.1.3  Resources
6.1.3.1  Overview  Up
6.1.3.2  Resource: SM contexts collection  Word-p. 59
6.1.3.2.1  Description
6.1.3.2.2  Resource Definition
6.1.3.2.3  Resource Standard Methods  Word-p. 60
6.1.3.2.3.1  POST
6.1.3.2.4  Resource Custom Operations  Word-p. 61
6.1.3.3  Resource: Individual SM context  Word-p. 62
6.1.3.3.1  Description
6.1.3.3.2  Resource Definition
6.1.3.3.3  Resource Standard Methods  Up
6.1.3.3.4  Resource Custom Operations
6.1.3.3.4.1  Overview
6.1.3.3.4.2  Operation: modify
6.1.3.3.4.2.1  Description
6.1.3.3.4.2.2  Operation Definition
6.1.3.3.4.3  Operation: release  Word-p. 63
6.1.3.3.4.3.1  Description
6.1.3.3.4.3.2  Operation Definition
6.1.3.3.4.4  Operation: retrieve  Word-p. 64
6.1.3.3.4.4.1  Description  Up
6.1.3.3.4.4.2  Operation Definition
6.1.3.5  Resource: PDU sessions collection (H-SMF or SMF)
6.1.3.5.1  Description
6.1.3.5.2  Resource Definition
6.1.3.5.3  Resource Standard Methods  Word-p. 65
6.1.3.5.3.1  POST
6.1.3.5.4  Resource Custom Operations  Word-p. 67
6.1.3.5.4.1  Overview
6.1.3.6  Resource: Individual PDU session (H-SMF or SMF)
6.1.3.6.1  Description  Up
6.1.3.6.2  Resource Definition
6.1.3.6.3  Resource Standard Methods
6.1.3.6.4  Resource Custom Operations
6.1.3.6.4.1  Overview
6.1.3.6.4.2  Operation: modify
6.1.3.6.4.2.1  Description
6.1.3.6.4.2.2  Operation Definition
6.1.3.6.4.3  Operation: release  Word-p. 68
6.1.3.6.4.3.1  Description
6.1.3.6.4.3.2  Operation Definition  Up
6.1.3.7  Resource: Individual PDU session (V-SMF or I-SMF)  Word-p. 69
6.1.3.7.1  Description
6.1.3.7.2  Resource Definition
6.1.3.7.3  Resource Standard Methods
6.1.3.7.3.1  POST
6.1.3.7.4  Resource Custom Operations  Word-p. 70
6.1.3.7.4.1  Overview
6.1.3.7.4.2  Operation: modify
6.1.3.7.4.2.1  Description
6.1.3.7.4.2.2  Operation Definition  Up
6.1.4  Custom Operations without associated resources  Word-p. 71
6.1.5  Notifications
6.1.5.1  General
6.1.5.2  SM Context Status Notification  Word-p. 72
6.1.5.2.1  Description
6.1.5.2.2  Notification Definition
6.1.6  Data Model
6.1.6.1  General
6.1.6.2  Structured data types  Word-p. 77
6.1.6.2.1  Introduction  Up
6.1.6.2.2  Type: SmContextCreateData  Word-p. 78
6.1.6.2.3  Type: SMContextCreatedData  Word-p. 84
6.1.6.2.4  Type: SMContextUpdateData  Word-p. 86
6.1.6.2.5  Type: SMContextUpdatedData  Word-p. 91
6.1.6.2.6  Type: SMContextReleaseData  Word-p. 92
6.1.6.2.7  Type: SMContextRetrieveData  Word-p. 94
6.1.6.2.8  Type: SMContextStatusNotification
6.1.6.2.9  Type: PduSessionCreateData  Word-p. 95
6.1.6.2.10  Type: PduSessionCreatedData  Word-p. 101
6.1.6.2.11  Type: HsmfUpdateData  Word-p. 105
6.1.6.2.12  Type: HsmfUpdatedData  Word-p. 110
6.1.6.2.13  Type: ReleaseData  Word-p. 111
6.1.6.2.14  Type: HsmfUpdateError  Word-p. 112
6.1.6.2.15  Type: VsmfUpdateData  Word-p. 113
6.1.6.2.16  Type: VsmfUpdatedData  Word-p. 116
6.1.6.2.17  Type: StatusNotification  Word-p. 117
6.1.6.2.18  Type: QosFlowItem
6.1.6.2.19  Type: QosFlowSetupItem
6.1.6.2.20  Type: QosFlowAddModifyRequestItem  Word-p. 118
6.1.6.2.21  Type: QosFlowReleaseRequestItem  Up
6.1.6.2.22  Type: QosFlowProfile  Word-p. 119
6.1.6.2.23  Type: GbrQosFlowInformation
6.1.6.2.24  Type: QosFlowNotifyItem  Word-p. 120
6.1.6.2.25  Void
6.1.6.2.26  Void
6.1.6.2.27  Type: SMContextRetrievedData
6.1.6.2.28  Type: TunnelInfo
6.1.6.2.29  Type: StatusInfo  Word-p. 121
6.1.6.2.30  Type: VsmfUpdateError
6.1.6.2.31  Type: EpsPdnCnxInfo  Word-p. 122
6.1.6.2.32  Type: EpsBearerInfo
6.1.6.2.33  Type: PduSessionNotifyItem  Up
6.1.6.2.34  Type: EbiArpMapping
6.1.6.2.35  Type: SmContextCreateError
6.1.6.2.36  Type: SMContextUpdateError  Word-p. 123
6.1.6.2.37  Type: PduSessionCreateError  Word-p. 124
6.1.6.2.38  Type: MmeCapabilities
6.1.6.2.39  Type: SmContext [R16]  Word-p. 125
6.1.6.2.40  Type: ExemptionInd [R16]  Word-p. 128
6.1.6.2.41  Type: PsaInformation [R16]  Word-p. 129
6.1.6.2.42  Type: DnaiInformation [R16]
6.1.6.2.43  Type: N4Information [R16]  Up
6.1.6.3  Simple data types and enumerations
6.1.6.3.1  Introduction
6.1.6.3.2  Simple data types  Word-p. 130
6.1.6.3.3  Enumeration: UpCnxState
6.1.6.3.4  Enumeration: HoState  Word-p. 131
6.1.6.3.5  Enumeration: RequestType
6.1.6.3.6  Enumeration: RequestIndication
6.1.6.3.7  Enumeration: NotificationCause
6.1.6.3.8  Enumeration: Cause  Word-p. 132
6.1.6.3.9  Enumeration: ResourceStatus  Up
6.1.6.3.10  Enumeration: DnnSelectionMode
6.1.6.3.11  Enumeration: EpsInterworkingIndication  Word-p. 133
6.1.6.3.12  Enumeration: N2SmInfoType
6.1.6.3.13  Enumeration: MaxIntegrityProtectedDataRate  Word-p. 134
6.1.6.3.14  Enumeration: MaReleaseIndication [R16]
6.1.6.3.15  Enumeration: SmContextType [R16]
6.1.6.3.16  Enumeration: PsaIndication [R16]
6.1.6.3.17  Enumeration: N4MessageType [R16]
6.1.6.4  Binary data  Word-p. 135
6.1.6.4.1  Introduction  Up
6.1.6.4.2  N1 SM Message
6.1.6.4.3  N2 SM Information
6.1.6.4.4  n1SmInfoFromUe, n1SmInfoToUe, unknownN1SmInfo  Word-p. 136
6.1.6.4.5  N4 Message Payload [R16]  Word-p. 138
6.1.7  Error Handling
6.1.7.1  General
6.1.7.2  Protocol Errors
6.1.7.3  Application Errors
6.1.8  Feature Negotiation  Word-p. 141
6.1.9  Security  Word-p. 142
A (Normative)  OpenAPI specification  Word-p. 143
A.1  General
A.2  Nsmf_PDUSession API
B  HTTP Multipart Messages  Word-p. 182
B.1  Example of HTTP multipart message
B.1.1  General
B.1.2  Example HTTP multipart message with N1 SM Message binary data
C  Change history  Word-p. 183

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