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2 ITU-T Focus Group IMT-2020 Deliverables
• Support of network capability exposure;
• Support of unified authentication framework;
• Abstraction of the transport domain to support various transport technologies.
• Leveraging existing techniques such as Network Function Virtualization and Software Defined
Networking):
– SDN enables separation of Control plane and Data plane functions differently from existing
network equipment. It enables network architecture to be flexible and programmable.
– NFV is expected to play a significant role in making the IMT-2020 network more flexible by
realizing network components as software components. It leads to reduce total cost of
ownership, improve operational efficiency, energy efficiency, and simplicity and flexibility for
offering new services.
6.2 End-to-end functional architecture of IMT-2020
6.2.1 Overview of end-to-end IMT-2020 functional architecture
6.2.2 Functional architecture of IMT-2020 core network
Figure 6-1 shows the functional architecture framework of IMT-2020 core network in network slice instance
level.
Each network function in the figure may be comprised of one or more functional entities.
Figure 6-1 – Framework of IMT-2020 core network functional architecture
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