Page 239 - 5G Basics - Core Network Aspects

Core network aspects 1

– It is required to provide external application programming interfaces (APIs) to create and manage
SAME network slices.
NOTE – Logically isolated network partition (LINP) [ITU-T Y.3011], [ITU-T Y.3012] and [ITU-T Y.3015] can be one of
realization of SAME network slice.
R4 – Support separation of the control function and forwarding function

To achieve flexibility in deploying network equipment, control function and forwarding function should no
longer be in the same equipment, whether the functions are physical or virtual. They should be able to be
installed in different places. SAME aims to realize such feature through the requirements below.
– It is recommended to support the capability to realize geographically centralized management of
control function entities.
NOTE – For example, engineers will then not need to go to different data centres or central offices to
perform operational work such as deploying and powering on new servers.
– It is required to enable scaling/deployment of control functions and forwarding functions in
independent manner.
– It is recommended to support optimization of bandwidth utilization (e.g., traffic localization, traffic
scheduling) by centralized control of traffic forwarding and distributed forwarding functions.
– It is required to support optimization of user experience (e.g., latency reduction) by deploying the
forwarding functions closer to the subscriber.

229