Page 235 - ITU-T Focus Group IMT-2020 Deliverables

ITU-T Focus Group IMT-2020 Deliverables 3

NOTE – Slice provisioning can involve interactions with the MANO NFV orchestrator, other NFV management
systems, and/or SDN controllers depending on administration boundaries of the underlying slice resources.
If the SP functional element provides full provisioning capabilities, the slice provisioning can be done
internally by itself. If interactions with external provisioning functional entities are needed, it can be done
through IMT-2020MPS functional element which is the interface to the external IMT-2020 management
systems.
Inter-Slice Orchestration

The Inter-Slice Orchestration (ISO) functional element is responsible for orchestration of inter-slice matters
and provides capabilities for;

• orchestrating multiple slices provisioning
• resolving inter-slice quality, fault, anomaly, and charging issues

Slice Fault Management
The Slice Fault Management (SFM) functional element is responsible for fault management of the
provisioned slices and provides capabilities for:
• detecting anomalous events which cause failure of the provisioned slice resources.
• analyzing a root cause of the failure of the provisioned slice resources
• generating failure resolving policies and interact with SCPO functional element for the actual healing
actions.

Slice Security Management
The Slice Security Management (SSM) functional element is responsible for security management of the
provisioned slices and provides capabilities for
• providing authentication and authorization capabilities of the provisioned slices
• detecting and avoiding anomalous attacks of the provisioned slices

Slice Charging Management
The Slice Charging Management (SCM) functional element is responsible for accounting management of the
provisioned slices resource usage and provides capabilities for metering and reporting slice resource usage
data for charging. Resource usage data can be metered per slice or per end-user/customer.
Slice Resource Monitoring & Analytics

The Slice Resource Monitoring and Analytics (SRMA) functional element is responsible for collecting the
status and events of the provisioned slice resources and analyzing them for the purpose of fault, quality, and
security management and provides capabilities for:
• monitoring the activities, status, anomalous events of the application resources in the provisioned
slices
• analyzing the monitored data and providing reports on the behavior of the resources, which can
take the form of alerts for behavior which has a time-sensitive aspect (e.g., the occurrence of a fault,
the completion of a task), or it can take the form of aggregated forms of historical data (e.g.,
resource usage data);
• storing and retrieving monitored data and analysis reports as logging records in the Slice Resource
Repository.

Slice Resource Repository
The Slice Resource Repository (SRR) functional element is responsible for storing the contents discovered by
the SFM, SSM, SCM, and SRMA and customers request profiles, and managing the lifecycle of the contents
in the repository and provides capabilities for:

• storing and providing APIs for query the contents in the repository.

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