Page 215 - 5G Basics - Core Network Aspects

Core network aspects 1

3.1.7 software-defined networking (SDN) [b-ITU-T Y.3300]: A set of techniques that enables to directly
program, orchestrate, control and manage network resources, which facilitates the design, delivery and
operation of network services in a dynamic and scalable manner.
3.1.8 user [b-ITU-T Y.2201]: A user includes end user [b-ITU-T Y.2091], person, subscriber, system,
equipment, terminal (e.g., FAX, PC), (functional) entity, process, application, provider, or corporate network.
3.1.9 virtualized network [ITU-T Y.3321]: A network that makes use of virtualization technologies. It
enables the abstraction of network resources such as creation of logically isolated virtual networks over a
single physical network, and aggregation of multiple network resources as a single network resource.

3.2 Terms defined in this Recommendation
None.

4 Abbreviations and acronyms
This Recommendation uses the following abbreviations and acronyms:

API Application Programming Interface
CPE Customer Premises Equipment

FE Functional Entity
NGN Next Generation Network

NICE Network Intelligence Capability Enhancement
QoS Quality of Service

SDN Software-defined Networking
S-NICE Software-defined NICE

5 Conventions
The keywords ''is required to'' indicate a requirement which must be strictly followed and from which no
deviation is permitted if conformance to this document is to be claimed.
The keywords ''is recommended'' indicate a requirement which is recommended but which is not absolutely
required. Thus this requirement need not be present to claim conformance.

The keywords ''can optionally'' indicate an optional requirement which is permissible, without implying any
sense of being recommended. This term is not intended to imply that the vendor's implementation must
provide the option and the feature can be optionally enabled by the network operator/service provider.
Rather, it means the vendor may optionally provide the feature and still claim conformance with the
specification.

In the body of this Recommendation and its annexes, the words shall, shall not, should, and may sometimes
appear, in which case they are to be interpreted, respectively, as is required to, is prohibited from, is
recommended, and can optionally. The appearance of such phrases or keywords in an appendix or in material
explicitly marked as informative are to be interpreted as having no normative intent.

6 Overview for S-NICE
S-NICE is a specific implementation of NICE making use of software-defined networking (SDN) technologies.
In S-NICE, the functional entities such as service control functional entity (FE), content and context analysis
FE, policy control FE, traffic scheduling FE need to be redesigned and implemented based on the SDN
technologies.

S-NICE supports the major functions of SDN technologies including the decoupling of control and data planes,
the logical centralization of network intelligence and status and the abstraction of the underlying network

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