1、 ETSI TS 129 520 V15.0.0 (2018-07) 5G; 5G System; Network Data Analytics Services; Stage 3 (3GPP TS 29.520 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 129 520 V15.0.0 (2018-07)13GPP TS 29.520 version 15.0.0 Release 15Reference DTS/TSGC-0329520vf00 Keywords 5G ETSI 650 Route des L
2、ucioles 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 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/sta
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9、tents 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); Essen
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11、ut 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
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13、ment 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 identities, UMT
14、S 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 document “shall“,
15、 “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
16、direct citation. ETSI ETSI TS 129 520 V15.0.0 (2018-07)33GPP TS 29.520 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g31 Scope 7g32 References 7g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 8g34
17、Services offered by the NWDAF . 8g34.1 Introduction 8g34.2 Nnwdaf_EventsSubscription Service . 8g34.2.1 Service Description . 8g34.2.1.1 Overview . 8g34.2.1.2 Service Architecture 9g34.2.1.3 Network Functions 9g34.2.1.3.1 Network Data Analytics Function (NWDAF) . 9g34.2.1.3.2 NF Service Consumers 9g
18、34.2.2 Service Operations 10g34.2.2.1 Introduction . 10g34.2.2.2 Nnwdaf_EventsSubscription_Subscribe service operation . 10g34.2.2.2.1 General 10g34.2.2.2.2 Subscription for event notifications on a specified network slice instance . 10g34.2.2.2.3 Update subscription for event notifications on a spe
19、cified network slice instance 11g34.2.2.3 Nnwdaf_EventsSubscription_Unsubscribe service operation . 12g34.2.2.3.1 General 12g34.2.2.3.2 Unsubscribe from event notifications on a specified network slice instance . 13g34.2.2.4 Nnwdaf_EventsSubscription_Notify service operation 13g34.2.2.4.1 General 13
20、g34.2.2.4.2 Notification about subscribed event on specified network slice instance 13g34.3 Nnwdaf_AnalyticsInfo Service 14g34.3.1 Service Description . 14g34.3.1.1 Overview . 14g34.3.1.2 Service Architecture 14g34.3.1.3 Network Functions 15g34.3.1.3.1 Network Data Analytics Function (NWDAF) . 15g34
21、.3.1.3.2 NF Service Consumers 15g34.3.2 Service Operations 15g34.3.2.1 Introduction . 15g34.3.2.2 Nnwdaf_AnalyticsInfo_Request service operation . 16g34.3.2.2.1 General 16g34.3.2.2.2 Request and get from NWDAF load level information for a particular Network Slice instance . 16g35 API Definitions 17g
22、35.1 Nnwdaf_EventsSubscription Service API 17g35.1.1 Introduction. 17g35.1.2 Usage of HTTP . 17g35.1.2.1 General 17g35.1.2.2 HTTP standard headers . 17g35.1.2.2.1 General 17g35.1.2.2.2 Content type 17g35.1.2.3 HTTP custom headers . 17g35.1.3 Resources 18g35.1.3.1 Resource Structure 18g35.1.3.2 Resou
23、rce: NWDAF Events Subscriptions . 18g3ETSI ETSI TS 129 520 V15.0.0 (2018-07)43GPP TS 29.520 version 15.0.0 Release 155.1.3.2.1 Description 18g35.1.3.2.2 Resource definition 18g35.1.3.2.3 Resource Standard Methods 18g35.1.3.2.3.1 POST 18g35.1.3.2.4 Resource Custom Operations 19g35.1.3.3 Resource: Ind
24、ividual NWDAF Event Subscription 19g35.1.4 Custom Operations without associated resources . 20g35.1.5 Notifications . 20g35.1.5.1 General 20g35.1.5.2 Event Notification . 21g35.1.6 Data Model . 21g35.1.6.1 General 21g35.1.6.2 Structured data types . 22g35.1.6.2.1 Introduction . 22g35.1.6.2.2 Type Nn
25、wdaf_EventsSubscription 23g35.1.6.2.3 Type EventSubscription 23g35.1.6.2.4 Type NnwdafEventsSubscriptionNotification . 23g35.1.6.2.5 Type EventNotification . 24g35.1.6.2.6 Type SliceLoadLevelInformation 24g35.1.6.3 Simple data types and enumerations . 24g35.1.6.3.1 Introduction . 24g35.1.6.3.2 Simpl
26、e data types . 24g35.1.6.3.3 Enumeration: NotificationMethod . 24g35.1.6.3.4 Enumeration: NwdafEvent 25g35.1.7 Error handling . 25g35.1.8 Feature negotiation . 25g35.2 Nnwdaf_AnalyticsInfo Service API . 25g35.2.1 Introduction. 25g35.2.2 Usage of HTTP . 26g35.2.2.1 General 26g35.2.2.2 HTTP standard h
27、eaders . 26g35.2.2.2.1 General 26g35.2.2.2.2 Content type 26g35.2.2.3 HTTP custom headers . 26g35.2.3 Resources 26g35.2.3.1 Resource Structure 26g35.2.3.2 Resource: NWDAF Analytics . 27g35.2.3.2.1 Description 27g35.2.3.2.2 Resource definition 27g35.2.3.2.3 Resource Standard Methods 27g35.2.3.2.3.1 G
28、ET 27g35.2.3.2.4 Resource Custom Operations 27g35.2.4 Custom Operations without associated resources . 27g35.2.5 Notifications . 27g35.2.6 Data Model . 28g35.2.6.1 General 28g35.2.6.2 Structured data types . 28g35.2.6.2.1 Introduction . 28g35.2.6.2.2 Type AnalyticsData . 28g35.2.6.2.3 Type EventFilt
29、er 28g35.2.6.3 Simple data types and enumerations . 29g35.2.6.3.1 Introduction . 29g35.2.6.3.2 Simple data types . 29g35.2.6.3.3 Enumeration: EventId 29g35.2.7 Error handling . 29g35.2.8 Feature negotiation . 29g3Annex A (normative): OpenAPI specification . 31g3A.1 General . 31g3A.2 Nnwdaf_EventsSub
30、scription API . 31g3ETSI ETSI TS 129 520 V15.0.0 (2018-07)53GPP TS 29.520 version 15.0.0 Release 15A.3 Nnwdaf_AnalyticsInfo API 31g3Annex B (informative): Change history . 32g3History 33g3ETSI ETSI TS 129 520 V15.0.0 (2018-07)63GPP TS 29.520 version 15.0.0 Release 15Foreword This Technical Specifica
31、tion has been produced by the 3rdGeneration 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
32、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 al
33、l 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 ETSI TS 129 520 V15.0.0 (2018-07)73GPP TS 29.520 version 15.0.0 Release 151 Scope The present specification provid
34、es the stage 3 definition of the Network Data Analytics Function Services of the 5G System. The 5G System Architecture is defined in 3GPPg3TSg323.501 2. The stage 2 definition and related procedures for Network Data Analytics Function Services are specified in 3GPP TS 23.502 3 and 3GPP TS 23.503 4.
35、The 5G System stage 3 call flows are provided in 3GPP TS 29.513 5. The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition are specified in 3GPP TS 29.500 6 and 3GPP TS 29.501 7. The Network Data Analytics Function Services are provided b
36、y the Network Data Analytics Function (NWDAF). These services provide NWDAF slice congestion events notification and NWDAF operator specific analytics. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - Refe
37、rences 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
38、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
39、the 5G System; Stage 2“. 4 3GPP TS 23.503: “Policy and Charging Control Framework for the 5G System; Stage 2“. 5 3GPP TS 29.513: “5G System; Policy and Charging Control signalling flows and QoS parameter mapping; Stage 3“. 6 3GPP TS 29.500: “5G System; Technical Realization of Service Based Architec
40、ture; Stage 3“. 7 3GPP TS 29.501: “5G System; Principles and Guidelines for Services Definition; Stage 3“. 8 3GPP TS 29.571: “5G System; Common Data Types for Service Based Interfaces; Stage 3“. 9 IETF RFC 7540: “Hypertext Transfer Protocol Version 2 (HTTP/2)“. 10 IETF RFC 7159: “The JavaScript Obje
41、ct Notation (JSON) Data Interchange Format“. 11 OpenAPI, “OpenAPI 3.0.0 Specification“, https:/ 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 documen
42、t takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 1. ETSI ETSI TS 129 520 V15.0.0 (2018-07)83GPP TS 29.520 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 abb
43、reviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 1. API Application Programming Interface JSON JavaScript Object Notation HTTP Hypertext Transfer Protocol NF Network Function NWDAF Network Data Analytics Function 4 Ser
44、vices offered by the NWDAF 4.1 Introduction The Nnwdaf services are used for the NWDAF to provide network data analytics (i.e. load level information). These services provide NWDAF slice congestion events notification and NWDAF operator specific analytics. The following services are specified for NW
45、DAF: Table 4.1-1: Services provided by NWDAF Service Name Description Service Operations Operation Semantics Example Consumer(s) Nnwdaf_EventsSubscription This service enables the NF service consumers to subscribe/unsubscribe for network slice specific congestion events notification from the NWDAF.
46、Subscribe Subscribe / Notify PCF Unsubscribe Notify Nnwdaf_AnalyticsInfo This service enables the NF service consumers to request and get operator specific analytics from NWDAF. Request Request / Response PCF 4.2 Nnwdaf_EventsSubscription Service 4.2.1 Service Description 4.2.1.1 Overview The NWDAF
47、slice congestion events notification Service, as defined in 3GPP TS 23.501 2, 3GPP TS 23.502 3 and 3GPP TS 23.503 4, is provided by the Network Data Analytics Function (NWDAF). This service: - Allows NF consumers to subscribe to and unsubscribe from load events of network slice instance; and - notif
48、ies NF consumers with a corresponding subscription about observed events. The types of observed events include: - Load level of network slice instance. ETSI ETSI TS 129 520 V15.0.0 (2018-07)93GPP TS 29.520 version 15.0.0 Release 154.2.1.2 Service Architecture The 5G System Architecture is defined in
49、 3GPP TS 23.501 2. The Policy and Charging related 5G architecture is also described in 3GPP TS 23.503 4 and 3GPP TS 29.513 5. The Nnwdaf_EventsSubscription service is part of the Nnwdaf service-based interface exhibited by the Network Data Analytics Function (NWDAF). Known consumer of the Nnwdaf_EventsSubscription service is: - Policy Control Function (PCF) The PCF accesses the Nnwdaf_EventsSubscription service at the NWDAF via the N23 Reference point. NWDA
