Content for  TS 28.535  Word version:  17.5.0

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0  Introductionp. 5

The present document describes closed control loop assurance solution enabling a service provider or an operator to continuously deliver the requested level of communication service quality to the customer and is part of a TS-family covering the 3rd Generation Partnership Project Technical Specification Group Services and System Aspects Management and orchestration of networks, as identified below:
TS 28.535:
Management Services for Communication Service Assurance; Requirements
TS 28.536:
Management Services for Communication Service Assurance; Stage 2 and stage 3
The solution described builds upon the management services specifications as identified below:
TS 28.530:
Management and orchestration; Concepts, use cases and requirements
TS 28.533:
Management and orchestration; Architecture framework
TS 28.532:
Management and orchestration; Generic management services
TS 28.540:
Management and orchestration; 5G Network Resource Model (NRM); Stage 1
TS 28.541:
Management and orchestration; 5G Network Resource Model (NRM); Stage 2 and stage 3
TS 28.531:
Management and orchestration; Provisioning
TS 28.545:
Management and orchestration; Fault Supervision (FS)
TS 28.550:
Management and orchestration; Performance assurance
TS 28.552:
Management and orchestration; 5G performance measurements
TS 28.554:
Management and orchestration; 5G End to end Key Performance Indicators (KPI)

1  Scopep. 6

The present document describes, concepts and background, and specifies use cases and requirements for closed control loop communication service assurance solution that adjusts and optimizes the services provided by NG-RAN and 5GC.

2  Referencesp. 6

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.
TR 21.905: "Vocabulary for 3GPP Specifications".
TS 22.261: "Service requirements for the 5G system".
TS 28.550: "Management and orchestration; Performance assurance".
TS 28.531: "Management and orchestration; Provisioning".
ETSI GS ZSM 002 (V1.1.1) (2019-08): "Zero-touch network and Service Management (ZSM); Reference Architecture".
TS 28.545: "Management and orchestration; Fault Supervision (FS)".
TS 28.552: "Management and orchestration; 5G performance measurements".
TS 28.554: "Management and orchestration; 5G end to end Key Performance Indicators (KPI)".
TS 28.532: "Management and orchestration; Generic management services".
TS 23.003: "Numbering, addressing and identification".
ETSI GS ZSM 009-1 (V1.1.1) (2021-06): "Zero-touch network and Service Management (ZSM); Closed-Loop Automation; Part 1: Enablers".

3  Definitions of terms, symbols and abbreviationsp. 6

3.1  Termsp. 6

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.
communication services:
subset of 3GPP defined services. Examples of 3GPP services (e.g. 5G LAN, URLLC) can be found in TS 22.261.
service level specification:
specification of the minimum acceptable standard of service.
SLA requirements:
service and network requirements derived from SLAs.

3.2  Symbolsp. 7


3.3  Abbreviationsp. 7

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.
Core Network
Communication Service
Communication Service Assurance
Communication Service Customer
Communication Service Provider
enhanced Mobile BroadBand
Key Performance Indicator
Management Data Analytics Service
Management Service
Network Function
NetworkSlice Instance
NetworkSlice Subnet Instance
NetworkSlice Provider
Network Data Analytics Function
Quality of Experience
Slice Differentiator
Service Level agreement
Service Level Specification
Single Network Slice Selection Assistance Information

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