Page 114 - 5G Basics - Core Network Aspects

1 Core network aspects

1 Scope
The scope of this Recommendation is to provide requirements of network virtualization for future networks.

2 References

The following ITU-T Recommendations and other references contain provisions which, through reference in
this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated
were valid. All Recommendations and other references are subject to revision; users of this Recommendation
are therefore encouraged to investigate the possibility of applying the most recent edition of the
Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is
regularly published. The reference to a document within this Recommendation does not give it, as a stand-
alone document, the status of a Recommendation.
[ITU-T Y.3001] Recommendation ITU-T Y.3001 (2011), Future networks: Objectives and design goals.

[ITU-T Y.3011] Recommendation ITU-T Y.3011 (2012), Framework of network virtualization for future
networks.

3 Definitions

3.1 Terms defined elsewhere
This Recommendation uses the following terms defined elsewhere:

3.1.1 future network (FN) [ITU-T Y.3001]: A network able to provide services, capabilities, and facilities
difficult to provide using existing network technologies. A future network is either:
a) A new component network or an enhanced version of an existing one, or

b) A heterogeneous collection of new component networks or of new and existing component
networks that is operated as a single network.

3.1.2 logically isolated network partition (LINP) [ITU-T Y.3011]: A network that is composed of multiple
virtual resources which is isolated from other LINPs.

3.1.3 network virtualization [ITU-T Y.3011]: A technology that enables the creation of logically isolated
network partitions over shared physical networks so that heterogeneous collections of multiple virtual
networks can simultaneously coexist over the shared networks. This includes the aggregation of multiple
resources in a provider and appearing as a single resource.
3.1.4 virtual resource [ITU-T Y.3011]: An abstraction of physical or logical resource, which may have
different characteristics from the physical or logical resource and whose capability may be not bound to the
capability of the physical or logical resource.

3.2 Terms defined in this Recommendation
This Recommendation defines the following term:

3.2.1 LINP operator: A network operator that creates, programs, configures, manages and terminates
network services on a given LINP.

4 Abbreviations and acronyms

This Recommendation uses the following abbreviations and acronyms:
AAA Authentication, Authorization and Accounting

API Application Programming Interface
CPU Central Processing Unit
LINP Logically Isolated Network Partition

104