Page 254 - ITU-T Focus Group IMT-2020 Deliverables

3 ITU-T Focus Group IMT-2020 Deliverables

Figure 16 – Multiple eNMSs for different domains

Figure 16 explains the way eNMSs can manage the various domains. The size of the eNMS will be set up
based on the size of the domain, but their structures are basically same. They will cooperate each other to
provide one view to the other systems and operators working out of eNMS.

9.3 Virtual Network Management

9.3.1 Implementation scenario of multi operators

9.3.1.1 Multi Service Control and Management
One of the main design objective is to increase the flexibility and programmability of IMT-2020 networks with
a novel Service Development Kit, a novel, modular Service Platform and Service Orchestrator, and a novel
Integrated Infrastructure Management. It will bridge the gap between telecom business needs and
operational management systems. The expected key functionality and systems are represented by the
Service Development Kit, the Management System and the Service Platform including: a customizable Service
Orchestrator, a Resource Orchestrator, a Service Information Base along with various Enablers as
represented in Figure 17. This figure covers the Multi-service Control layer, the Integrated Management and
Operation layer and the Application and Business Services Layer. This figure also shows the heterogeneity of
the physical resources underlying the IMT-2020 infrastructures and related IMT-2020 network segments:
radio networks, access networks, aggregation networks, core networks, software networks, data center
networks and mobile edge computing clouds. A Multi-Service Control layer is responsible for the creation,
operation, and control of multiple dedicated communication network services running on top of a common
infrastructure. Functionality for this layer includes: infrastructure abstraction; infrastructure capability
discovery; catalogues and repositories; a large number of service and resource orchestration functions such
as plugins; information management functionality; and enablers for automatic re-configuration of running
services (i.e. part of the integrated management layer). It interworks with a Business Function Layer that
maintains IMT-2020 application-related functions, organized in Repositories, and DevOps tools necessary for
the creation and deployment of services. Functionality for this layer includes DevOps functionality:
Catalogues, Monitoring data analysis tools, testing tools, Packaging tools, Editors and primitives for
Application & Service programmability. Figure 17 depicts the way in which IMT-2020 manages various
underlying systems.

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