Page 55 - ITU-T Focus Group IMT-2020 Deliverables

ITU-T Focus Group IMT-2020 Deliverables 2

Figure 5-3 – IMT-2020 network architecture framework

I.2 Living list document #2 - Common architecture framework proposed in [b-ITU-T IMT-I-247]
NOTE – Following is the proposed text for IMT-2020 network architecture framework in [b-ITU-T IMT-I-247].
For more details of the proposal, refer to [b-ITU-T IMT-I-247].

I.2.1 General framework and architectural principles
According to [IMT-2020 network requirement], following high level architectural principles are considered
for the IMT-2020 network:
• Support network slicing to accommodate various services with typical service categories, i.e.
enhanced mobile broadband, massive IoT, ultra-reliability and low latency communications, and
autonomous vehicles

• Minimize access and core network dependencies, design converged core network to adapt various
access network
• Separation of control and user plane functions in core network side, allowing independent scalability
and evolution, allowing flexib8le deployment
• Design the network function and interconnection with leveraging NFV and SDN technology

• Support network capability exposure to enable rich value-added services
• Design uniform network management system which cover both IMT-2020 system and legacy 2G, 3G
and LTE networks.

Figure 1 shows the IMT-2020 high-level framework diagram, which is comprised of four planes and associated
relationships to meet the above architectural principles.

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