End-to-End Network Service Monitoring for Zero-Touch Networks

Autonomous management capability is the main pillar for paving Zerotouch Networks and efficiently deliver and operate use cases under the light of 5G requirements. To this end, Closed Control Loop (CCL), IntentBased Networking (IBN), and Machine Learning (ML) are regarded as enablers to automatically executed all operational processes, ideally without human intervention. In this context, the ETSI Zero-touch network and Service Management (ZSM) framework specifies an end-to-end network and service management reference architecture for managing the full lifecycle of services. However, the whole process of service monitoring is not yet well-consolidated in ETSI ZSM. In this work, we propose the Monitoring Model Generator (MMG) component to automatically construct templates for service monitoring. MMG implements a novel methodology where service deployment models and standard information models are used as inputs to generate a high-level monitoring template, called Service Monitoring Model (SMM) and built upon an ontology-based schema based on the Resource Description Framework (RDF) vocabulary. We present a proof of concept implementation along with an experimental functional validation of the MMG and using RDF data in turtle syntax and format. The resulting monitoring models are then used to define actual monitoring KPIs and construct management policies in a control loop architecture. River Journal, 1–21. This is an Open Access publication. c © 2021 the Author(s). All rights reserved. 2 N. Saraiva, D. Lachos, C. Rothenberg, and P. Gomes List of Notations and Abbreviations 3GPP Third Generation Partnership 5G Fifth Generation AI Artificial Intelligence CCL Closed Control Loop DMG Deployment Model Generator DSL Domain-Specific Language E2E End-to-End ETSI European Telecommunications Standards Institute GST Generic Network Slice Template IBN Intent-Based Networking IM Information Model KPI Key Performance Indicator MD Management Domain ML Machine Learning MMG Monitoring Model Generator NFV Network Function Virtualization NMRG Network Management Research Group NS Network Service NSD Network Service Descriptor OAM Operation, Administration, and Maintenance PoC Proof of Concept RDF Resource Description Framework SDM Service Deployment Model SDN Software Defined Networking SDO Standards Developing Organization SLA Service Level Agreement SLO Service Level Objective SMM Service Monitoring Model VL Virtual Link VNF Virtualised Network Function ZSM Zero-touch network and Service Management End-to-End Network Service Monitoring for Zero-Touch Network 3