Page 188 - 5G Basics - Core Network Aspects

1 Core network aspects

A.3.3 Resource layer resource repository functional element

The RL resource repository functional element is responsible for storing the contents discovered by the
resource discovery and bootstrapping and managing the lifecycle of the contents in the repository. It provides
capabilities for:
– storing and providing APIs for querying the contents discovered by the RL resource discovery and
bootstrapping functional element;
– storing and providing APIs for querying the contents generated by the RL resource monitoring and
analytics functional element:
– ensuring lifecycle management of the contents in the repository (e.g., creation by storing,
modification, deletion).
A.3.4 Data/information abstraction functional element

The data/information abstraction functional element is responsible for generating abstractions of technology
specific physical and virtual resources in the SN-RL into technology independent common information. It
provides capabilities for:
– converting device dependent resource data into independent abstracted information;

– storing abstracted information in RL resource repository functional element;
– providing APIs to other functional components which need abstraction information.
A.3.5 Virtual/physical correlation functional element

The virtual/physical correlation functional element is responsible for correlating the relationship between
virtual and physical resources in RL and provides the following capabilities for:

– identifying correlation information among virtual and physical resources in the underlying SDN
networks for efficient provisioning, performance monitoring and fault detection and root-cause
analysis;
– identifying correlation information between virtual and physical flows for accounting purpose;
– storing correlation information in a common resource information repository and providing
programming interfaces to other functional components which need correlation information.

A.3.6 Resource layer resource monitoring and analytics functional element
The RL resource monitoring and analytics functional element is responsible for collecting the status and
events of SDN-RL resources and analyzing them for the purpose of FCAPS management. It provides
capabilities for:

– monitoring the activities, status, anomalous events of the virtual and physical resources in the SDN-
RL;

– analyzing the monitored data and providing reports on the behaviour of the resources, which can
take the form of alerts for 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 RL resource
repository functional element.
A.3.7 Resource layer fault management functional element

The RL fault management functional element is responsible for fault management of the SDN-RL. It provides
capabilities for:
– detecting anomalous events which cause failure of the underlying virtual and physical resources;

– analyzing a root cause of the failure including the correlated event among virtual and physical
resources;

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