Page 147 - ITU-T Focus Group IMT-2020 Deliverables

ITU-T Focus Group IMT-2020 Deliverables 3

1. Key issue 2: QoS framework (Clause 5.2 of [Ref. 6.4.7-3])

2. Key issue 20: Traffic Steering, Switching and Splitting between 3GPP and non-3GPP Accesses (Clause
5.20 of [Ref. 6.4.7-3])
3. Key Issue 17: 3GPP architecture impacts to support network discovery and selection (Clause 5.17 of
[Ref. 6.4.7-3])
4. Key Issue 19: Architecture impacts when using virtual environments (Clause 5.19 of [Ref. 6.4.7-3])
5. Key Issue 9: 3GPP architecture impacts to support network capability exposure (Clause 5.9 of
[Ref. 6.4.7-3])

References
[6.4.7-1] Basic Plan of 5G3ALT project by Ministry of Internal Affairs and Communications, Japan (in
Japanese), http://www.soumu.go.jp/main_content/000349194.pdf.
[6.4.7-2] 5G3ALT project by ATR (in Japanese), https://www.acr.atr.jp/acrmain/?p=191.

[6.4.7-3] R. Rezagah, N. Kawanishi, H. Shinbo, “Considerations of Resource Association in 5G
Communication Systems,” Proc. of the 2016 IEICE Society Conference, B-17-22, Sep. 2016.

[6.4.7-4] 3GPP TR 22.891 V14.2.0 (2016-09), Feasibility Study on New Services and Markets Technology
Enablers, Stage 1, (Release 14).

[6.4.7-5] TD SP-160227, New Study on Architecture and Security for Next Generation System, 3GPP TSG
SA Meeting #71, Gothenburg, Sweden, 9-11 March 2016.
[6.4.7-6] Technical report 3GPP TR 23.799 V1.1.0 (2016-10) Study on Architecture for Next Generation
System (Release 14).

7 Vertical extension of slicing
This section provides interface between orchestrator and virtual resources management entity on mobile
fronthaul and backhaul. This section includes reference point of the interface, basic procedure of the virtual
resource management, and functional requirements of the interface to control virtual resource from
orchestrator.

In the description of the functional requirements, results of Gap analysis with transport SDN by ONF are
reflected.

7.1 Network slicing for FH/BH

The basic concept of the Network Softwarization is “Slicing (LINP)” [Ref.7.1-1].
For the useful network slicing services, extensions for the slicing to the vertical axis and horizontal axis have
to be considered. In Section 7, vertical extension is described. Main contents of this subsection are functional
requirements of interface on reference points between the Orchestrator and FH/BH Control Functions, as
the following order.

In the subsection 7.1.1, the conceptual implementation model is described, which includes the desirable
reference point to be standardized. Addition to this, the detailed definitions are described to clarify the
functionalities in the figure.

In the subsection 7.1.2, the information messages are described, which are exchanged at the reference
points.

In the subsection 7.1.3, the basic sequence is described to exchange the information messages.
In the subsection 7.1.4, the lists of parameters are described, which are included in information messages
exchanged at the reference points. These parameters are considered through the reviewing of the
requirements for Gaps described in the Phase 1 report [Ref.7.1-1]. The detailed descriptions for the functions
are also described.

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