Page 125 - 5G Basics - Core Network Aspects

Core network aspects 1

1 Scope
This Recommendation describes the functional architecture of network virtualization, which enables
management and control of logically isolated network partitions (LINPs) over shared physical networks and
supports programmability of services on LINPs. It covers the specification of user roles, resources and LINPs,
functions and their mutual relations, and reference points.

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.

[ITU-T Y.3012] Recommendation ITU-T Y.3012 (2014), Requirements of network virtualization for
future networks.

3 Definitions

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

3.1.1 LINP operator [ITU-T Y.3012]: A network operator that creates, programs, configures, manages, and
terminates network services on a given LINP.

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 collection 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.
3.2 Terms defined in this Recommendation

None.

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

API Application Programming Interface
ASIC Application-Specific Integrated Circuit
FPGA Field-Programmable Gate Array

GRE Generic Routing Encapsulation
ID Identifier

IP Internet Protocol
LINP Logically Isolated Network Partition

115