Page 19 - ITU-T Focus Group IMT-2020 Deliverables

ITU-T Focus Group IMT-2020 Deliverables 2

1 Scope
This draft Recommendation describes requirements and capabilities to support emerging services and
applications in IMT-2020 from network perspective. Based on the analysis of use cases and business models,
design goals as key principles, high level requirements from the view of network operations as well as services
for overall non-radio aspects of IMT-2020 networks are specified.

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-R M.2083-0] Recommendation ITU-R M.2083-0 (2015), Framework and overall objectives of the
future development of IMT for 2020 and beyond.
[ITU-T Y.3001] Recommendation ITU-T Y.3001 (2011), Future networks: Objectives and design goals.

3 Definitions

<Check in the ITU-T Terms and definitions database on the public website whether the term is already defined
in another Recommendation. It may be more consistent to refer to such a definition rather than redefine it>

3.1 Terms defined elsewhere
This Recommendation uses the following terms defined elsewhere:
3.1.1 IMT-2020 [ITU-R M.2083-0]: Systems, system components, and related aspects that support to
provide far more enhanced capabilities than those described in Recommendation ITU-R M.1645.

3.1.2 logical resource [b-ITU-T Y.3011]: An independently manageable partition of a physical resource,
which inherits the same characteristics as the physical resource and whose capability is bound to the
capability of the physical resource.
NOTE – "independently" means mutual exclusiveness among multiple partitions at the same level.

3.1.3 network virtualization [b-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.
3.1.4 software-defined networking [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.

3.1.5 virtual resource [b-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.

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