Content for TS 23.435 Word version: 19.3.0

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3.1 Terms 3.2 Symbols 3.3 Abbreviations
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0 Introduction p. 11

Network slice capability enablement (NSCE) is a service that enables the network slice related capabilities towards 3rd party on the basis of R17 SEAL. The NSCE service provides additional functionality and exposes slice capabilities based on 5GS management system services (e.g MnS services) and 5GS network services (e.g. NEF APIs, NWDAF APIs, NSACF APIs). This technical specification provides architecture and procedures for enabling NSCE service over 3GPP networks.

1 Scope p. 12

The present document specifies the procedures and information flows necessary for Network Slice Capability Exposure for Application Layer Enablement on the basis of SEAL.

2 References p. 12

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, 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 the latest version of that document in the same Release as the present document.

[1]

TR 21.905: "Vocabulary for 3GPP Specifications".

[2]

TS 23.434: "Service Enabler Architecture Layer for Verticals (SEAL); Functional architecture and information flows".

[3]

TS 23.222: "Functional architecture and information flows to support Common API Framework for 3GPP Northbound APIs; Stage 2".

[4]

TS 23.288: "Architecture enhancements for 5G System (5GS) to support network data analytics services".

[5]

GSMA NG.116: Generic Network Slice Template.

[6]

TS 22.261: "Service requirements for the 5G system; Stage 1".

[7]

TS 28.532: "Management and orchestration; Generic management services".

[8]

TS 28.531: "Management and orchestration; Provisioning".

[9]

TS 28.537: "Management and orchestration; Management capabilities".

[10]

TS 28.541: "Management and orchestration; 5G Network Resource Model (NRM); Stage 2 and stage 3".

[11]

TS 28.535: "Management and orchestration; Management services for communication service assurance; Requirements".

[12]

TS 23.502: "Procedures for the 5G System (5GS)".

[13]

TS 29.536: "5G System; Network Slice Admission Control Service; Stage 3".

[14]

TS 33.501: "Security architecture and procedures for 5G System"

[15]

TS 28.530: "Management and orchestration; Concepts, use cases and requirements"

[16]

TS 23.501: "System Architecture for the 5G System; Stage 2".

[17]

TS 23.503: "Policy and Charging Control Framework for the 5G System; Stage 2".

[18]

TS 23.548: "5G System Enhancements for Edge Computing; Stage 2".

[19]

TS 28.552: "Management and orchestration; 5G performance measurements".

[20]

TS 28.554: "Management and orchestration; 5G end to end Key Performance Indicators (KPI)".

[21]

TS 28.104: "Management and orchestration; Management Data Analytics".

[21a]

TS 23.558: "Architecture for enabling Edge Applications".

[22]

TS 33.434: "Service Enabler Architecture Layer (SEAL); Security aspects for Verticals".

[23]

TS 28.545: "Management and orchestration; Fault Supervision (FS) "

[24]

TS 32.111-1: "Management and orchestration; Fault management, Part 1: 3G fault management requirements".

[25]

TS 28.533: "Management and orchestration; Architecture framework".

[26]

TS 23.436: "Procedures for Application Data Analytics Enablement Service"

[27]

TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction ".

[28]

TS 28.202: "Charging management; Network slice management charging in the 5G System (5GS); Stage 2".

3 Definitions of terms, symbols and abbreviations p. 13

3.1 Terms p. 13

For the purposes of the present document, the terms given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.

VAL server policy:

Network slice management Policy which can be seen as application function policy from VAL Provider/ slice customer/ASP, abstracted based on the slice usage pattern of application, consisting of trigger event and expected action. When provided to NSCE server, the NSCE server will trigger the expected action based on the policy.

MNO policy:

The network slice management policy between the VAL and MNO pertaining to a specific service and slice, including ranges of network slice capabilities which can be adapted, i.e. Network slice Service level agreement.

NSCE service provider policy (NSPP):

The network slice capability enablement service policy between the VAL and NSCE service provider pertaining to a specific service and slice, including ranges of network slice capability enablement service which can be adapted, i.e. NSCE service level agreement.

Policy harmonization:

The NSCE service that harmonizing the VAL server policy parameter, to make sure the VAL server policy is compatible with the policies of the MNO and NSCE service provider policy for the same service or slice.

Requirement alignment:

The NSCE service that aligning the network slice performance and the VAL service requirement in the request.

3.2 Symbols p. 13

For the purposes of the present document, the following symbols apply:

3.3 Abbreviations p. 14

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.

ASP

Application Service Provider

Auto-NS-LCM

Automatic Application Layer Network Slice Lifecycle Management

EDN

Edge Data Network

EGMF

Exposure Governance Management Function

GST

Generic Network Slice Template

KPI

Key Performance Indicator

KQI

Key Quality Indicator

MnS

Management Service

MNO

Mobile Network Operator

NEF

Network Exposure Function

NEST

Network Slice Template

NOP

Network Operator

NSCE

Network Slice Capability Enablement

NSaaS

Network Slice as a Service

NSI

Network Slice Instance

NSSI

Network Slice Subnet Instance

NWDAF

Network Data Analytics Function

NSACF

Network Slice Admission Control Function

NSC

Network Slice consumer

NSP

Network Slice Provider

NSMF

Network Slice Management Function

OAM

Operation, administration and maintenance

QoE

Quality of Experience

S-NSSAI

Single Network Slice Selection Assistance Information

SLA

Service Level agreement

VAL

Vertical Application Layer