Page 94 - ITU-T Focus Group IMT-2020 Deliverables

3 ITU-T Focus Group IMT-2020 Deliverables

– NAS Ciphering and Integrity protection

– Mobility management
– Session Management
– UE IP address allocation & management (incl optional Authorization)
– Selection of UP function
– Termination of interfaces towards Policy control and Charging functions
– Policy & Charging rules handling, incl control part of enforcement and QoS

– Lawful intercept (CP and interface to LI System)
NOTE 5 – Not all of the CCF functions are required to be supported in an instance of CCFs of a network slice
The NG Core User plane functions include the following functionality:
– Anchor point for Intra-/Inter-RAT mobility (when applicable)

– External PDU session point of interconnect (e.g., IP).
– Packet routing & forwarding
– QoS handling for User plane
– Packet inspection and Policy rule enforcement
– Lawful intercept (UP collection)
– Traffic accounting and reporting

NOTE 6 – Not all of the UPF functions are required to be supported in an instance of user plane function of a
network slice.

The NG Policy function includes the following functionality:
– Supports unified policy framework to govern network behavior.
– Provides policy rules to control plane function(s) to enforce them.

6.1.1.3.4 Consolidated architecture option 4
(Source: Deutsche Telekom AG)

Figure 6.1.1-14 – Baseline NextGen system

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