Page 184 - 5G Basics - Core Network Aspects

1 Core network aspects

– analyzing the monitored data and providing reports on the behaviour of the resources, which can
take the form of alerts for abnormal behaviour 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 AL resource
repository functional element.

A.1.4 Application layer resource repository functional element
The AL resource repository functional element is responsible for storing the contents discovered by the AL
resource discovery functional element and managing the lifecycle of these contents in the repository. It
provides capabilities for:
– storing and providing APIs for querying the contents discovered by the AL resource discovery
functional element;
– storing and providing APIs for querying the contents generated by the AL resource monitoring and
analytics functional element;

– ensuring lifecycle management of the contents in the repository (e.g., creation by storing,
modification, deletion).

A.1.5 Application layer provisioning functional element
The AL provisioning functional element is responsible for provisioning applications and relevant SDN-AL
resources. It provides capabilities for:
– provisioning applications and relevant SDN-AL resources. The application and resource provisioning
will trigger the SDN-AL orchestration operation which will further trigger the SDN-CL orchestration
and possibly allocate requested resources in the SDN-RL;
– mapping and translating customer's abstracted, high-level application/service provisioning profile
into more detailed provisioning policies;

– managing lifecycle of provisioning policy.
A.1.6 Application layer fault management functional element

The AL fault management functional element is responsible for fault management of the SDN-AL. It provides
capabilities for:

– detecting anomalous events which cause failure of the SDN-AL resources;
– analyzing a root cause of the failure of the SDN-AL resources;
– generating failure resolving policies and interact with control and provisioning functional
components for the actual healing actions.
A.1.7 Application layer quality management functional element

The AL quality management functional element is responsible for ensuring performance of the SDN-AL
resources. It provides capabilities for:

– monitoring and ensuring quality of the SDN-AL application and relevant resources based on the
given KPIs.

A.1.8 Application layer security management functional element
The AL security management functional element is responsible for security management of the SDN-AL. It
provides capabilities for:
– managing authentication and authorization capabilities of the SDN-AL;

– detecting and avoiding anomalous attacks of the SDN-AL.
NOTE – this functional element is optional.

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