Page 187 - 5G Basics - Core Network Aspects

Core network aspects 1

A.2.9 Control layer policy management functional element

The CL policy management functional component provides capabilities to define, store and retrieve policies
that apply to CL services. Policies can include business, technical, security, privacy and certification policies
that apply to CL services and their usage by SDN applications.

Some policies can be general and apply to a CL service irrespective of the SDN application concerned. Other
policies can be specific to a particular SDN application.

A.2.10 Control layer multi-layer orchestration support functional element
The CL multi-layer orchestration support functional element provides an internal interface to the multi-layer
orchestration support functional element in the MMO functional component for requesting and receiving
management operations and associated information for multi-layer orchestration specific to control layer
management.

A.3 Resource layer management functional component

Figure A.3 shows the functional elements of the RLM functional component.

Figure A.3 – Functional elements of the RLM functional component

A.3.1 Resource layer support functional element
The RL support functional element provides a MMR reference point to the RL-MS functional component (see
clause 7.3.4) which is used for requesting and receiving management operations and associated information
from/to the SDN-AL.

A.3.2 Resource layer resource discovery and bootstrapping functional element

The RL resource discovery and bootstrapping functional element is responsible for discovering and bootstrapping
physical and virtual resources in the SDN-RL. It provides capabilities for:

– discovering technology specific physical and virtual resources. The discovered resources are stored
in the RL resource repository functional element. The SDN-CL is responsible for abstract resource
discovery which is common across any underlying heterogeneous technology specific physical and
virtual resources;

– bootstrapping of physical and virtual resources to make them ready for operation based on the
bootstrapping policies.

177