1、 ETSI TS 129 508 V15.0.0 (2018-06) 5G; 5G System; Session Management Event Exposure Service; Stage 3 (3GPP TS 29.508 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 129 508 V15.0.0 (2018-06)13GPP TS 29.508 version 15.0.0 Release 15Reference DTS/TSGC-0329508vf00 Keywords 5G ETSI 650 R
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13、an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword 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 ident
14、ities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present documen
15、t “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 whe
16、n used in direct citation. ETSI ETSI TS 129 508 V15.0.0 (2018-06)33GPP TS 29.508 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviatio
17、ns . 7g34 Session Management Event Exposure Service . 7g34.1 Service Description 7g34.1.1 Overview 7g34.1.2 Service Architecture . 7g34.1.3 Network Functions 8g34.1.3.1 Session Management Function (SMF) 8g34.1.3.2 NF Service Consumers 8g34.2 Service Operations . 9g34.2.1 Introduction. 9g34.2.2 Nsmf_
18、EventExposure_Notify Service Operation . 9g34.2.2.1 General 9g34.2.2.2 Notification about subscribed events 9g34.2.3 Nsmf_EventExposure_Subscribe Service Operation 11g34.2.3.1 General 11g34.2.3.2 Creating a new subscription 11g34.2.3.3 Modifying an existing subscription . 13g34.2.4 Nsmf_EventExposur
19、e_UnSubscribe Service Operation . 13g34.2.4.1 General 13g34.2.4.2 Unsubscription from event notifications . 13g35 Nsmf_EventExposure API . 14g35.1 Introduction 14g35.2 Usage of HTTP . 14g35.2.1 General 14g35.2.2 HTTP standard headers . 15g35.2.2.1 General 15g35.2.2.2 Content type 15g35.2.3 HTTP cust
20、om headers . 15g35.3 Resources . 15g35.3.1 Resource Structure 15g35.3.2 Resource: SMF Notification Subscriptions . 15g35.3.2.1 Description 15g35.3.2.2 Resource definition . 15g35.3.2.3 Resource Standard Methods 16g35.3.2.3.1 POST . 16g35.3.2.4 Resource Custom Operations 16g35.3.3 Resource: Individua
21、l SMF Notification Subscription . 16g35.3.3.1 Description 16g35.3.3.2 Resource definition . 16g35.3.3.3 Resource Standard Methods 17g35.3.3.3.1 GET . 17g35.3.3.3.2 PUT . 17g35.3.3.3.3 DELETE 18g35.3.3.4 Resource Custom Operations 18g35.4 Custom Operations without associated resources. 18g35.5 Notifi
22、cations . 18g3ETSI ETSI TS 129 508 V15.0.0 (2018-06)43GPP TS 29.508 version 15.0.0 Release 155.5.1 General 18g35.5.2 Event Notification . 18g35.5.2.1 Description 18g35.5.2.2 Target URI 18g35.5.2.3 Standard Methods . 19g35.5.2.3.1 POST . 19g35.6 Data Model . 19g35.6.1 General 19g35.6.2 Structured dat
23、a types . 20g35.6.2.1 Introduction . 20g35.6.2.2 Type Nsmf_EventExposure 21g35.6.2.3 Type Nsmf_EventExposureNotification . 21g35.6.2.4 Type EventSubscription 21g35.6.2.5 Type EventNotification . 22g35.6.3 Simple data types and enumerations . 22g35.6.3.1 Introduction . 22g35.6.3.2 Simple data types 2
24、2g35.6.3.3 Enumeration: SmfEvent 23g35.6.3.4 Enumeration: NotificationMethod 23g35.6.3.5 Enumeration: DnaiChangeType 23g35.7 Error handling 23g35.7.1 General 23g35.7.2 Protocol Errors 24g35.7.3 Application Errors 24g35.8 Feature negotiation . 24g3Annex A (normative): OpenAPI specification . 25g3A.1
25、General . 25g3A.2 Nsmf_EventExposure API . 25g3Annex B (informative): Change history . 30g3History 31g3ETSI ETSI TS 129 508 V15.0.0 (2018-06)53GPP TS 29.508 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents
26、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: V
27、ersion 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
28、 third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 129 508 V15.0.0 (2018-06)63GPP TS 29.508 version 15.0.0 Release 151 Scope The present specification provides the stage 3 definition of the Session Management Event Exposure Service (Nsmf_Even
29、tExposure) of the 5G System. The stage 2 definition and procedures of the Session Management Event Exposure Service are contained in 3GPP TS 23.502 3 and 3GPP TS 23.503 6. The 5G System Architecture is defined in 3GPP TS 23.501 2. Stage 3 call flows for policy and charging control use cases are prov
30、ided in 3GPP TS 29.513 7. The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition of the 5G System are specified in 3GPP TS 29.500 4 and 3GPP TS 29.501 5. The Session Management Event Exposure Service is provided by the Session Management
31、 Function (SMF). This service exposes events related to PDU Sessions observed at the SMF. 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,
32、 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 t
33、he 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 29.500: “5G System; Technic
34、al Realization of Service Based Architecture; Stage 3“. 5 3GPP TS 29.501: “5G System; Principles and Guidelines for Services Definition; Stage 3“. 6 3GPP TS 23.503: “Policy and Charging Control Framework for the 5G System; Stage 2“. 7 3GPP TS 29.513: “5G System; Policy and Charging Control signallin
35、g flows and QoS parameter mapping; Stage 3“. 8 IETF RFC 7540: “Hypertext Transfer Protocol Version 2 (HTTP/2)“. 9 IETF RFC 8259: “The JavaScript Object Notation (JSON) Data Interchange Format“. 10 OpenAPI, “OpenAPI 3.0.0 Specification“, https:/ 11 3GPP TS 29.571: “5G System; Common Data Types for Se
36、rvice Based Interfaces Stage 3“. 3 Definitions 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
37、, in 3GPP TR 21.905 1. ETSI ETSI TS 129 508 V15.0.0 (2018-06)73GPP TS 29.508 version 15.0.0 Release 153.2 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
38、 the definition of the same abbreviation, if any, in 3GPP TR 21.905 1. AF Application Function AMBR Aggregate Maximum Bit Rate AMF Access and Mobility Management Function API Application Programming Interface DNAI DN Access Identifier DNN Data Network Name HTTP Hypertext Transfer Protocol JSON JavaS
39、cript Object Notation NEF Network Exposure Function NF Network Function SMF Session Management Function SUPI Subscription Permanent Identifier PCF Policy Control Function PRA Presence Reporting AreaUPF User Plane Function 4 Session Management Event Exposure Service 4.1 Service Description 4.1.1 Over
40、view The Session Management Event Exposure Service, as defined in 3GPP TS 23.502 3 and 3GPP TS 23.503 6, is provided by the Session Management Function (SMF). This service: - allows consumer NFs to subscribe and unsubscribe for events on a PDU session; and - notifies consumer NFs with a correspondin
41、g subscription about observed events on the PDU session. The types of observed events include: - UPF change (Addition and/or removal of PDU session anchor); SMF change; - Application traffic detection (start and stop); - PDU session statistics (for example usage reporting); - PDU session release; an
42、d - Out of credit. 4.1.2 Service Architecture The 5G System Architecture is defined in 3GPP TS 23.501 2. The Policy and Charging related 5G architecture is also described in 3GPP TS 29.513 7. The Session Management Event Exposure Service (Nsmf_EventExposure) is part of the Nsmf service-based interfa
43、ce exhibited by the Session Management Function (SMF), Known consumer of the Nsmf_EventExposure_Notify service are: - Policy Control Function (PCF) ETSI ETSI TS 129 508 V15.0.0 (2018-06)83GPP TS 29.508 version 15.0.0 Release 15- Network Exposure Function (NEF) - Access and Mobility Management Functi
44、on (AMF). - Application Function (AF) The PCF accesses the Session Management Event Exposure Service at the SMF via the N7 Reference point. The AMF accesses the Session Management Event Exposure Service at the SMF via the N11 Reference point. Figure 4.1.2-1: Reference Architecture for the Nsmf_Event
45、Exposure_Notify Service; SBI representation Figure 4.1.2-2: Reference Architecture for the Nsmf_EventExposure_Notify Service: reference point representation 4.1.3 Network Functions 4.1.3.1 Session Management Function (SMF) The Session Management function (SMF) provides: - Session Management e.g. Ses
46、sion establishment, modification and release; - UE IP address allocation - Selection and control of UP function; - Termination of interfaces towards Policy control functions; and - Control part of policy enforcement and QoS. 4.1.3.2 NF Service Consumers The Policy Control Function (PCF): ETSI ETSI T
47、S 129 508 V15.0.0 (2018-06)93GPP TS 29.508 version 15.0.0 Release 15- Supports unified policy framework to govern network behaviour; and - Provides policy rules to Control Plane function(s) that enforce them. The Network Exposure Function (NEF); - provides a means to securely expose the services and
48、 capabilities provided by 3GPP network functions for e.g. 3rd parties or internal exposure. The Access and Mobility Management function (AMF) provides: - Registration management; - Connection management; - Reachability management; - Mobility Management; and - Sending of UE Policy towards the served
49、UE. The Application Function (AF) - interacts with the 3GPP Core Network to provide services. 4.2 Service Operations 4.2.1 Introduction Table 4.2.1-1: Operations of the Nsmf_EventExposure_Notify Service Service operation name Description Initiated by Notify Report UE PDU session related event(s) to the NF service consumer which has subscribed to the event report service. SMF Subscribe This service operation is used by an NF service consumer to subscribe for even
