Page 244 - 5G Basics - Core Network Aspects
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1 Core network aspects
Operational flows
Case 1: centralized control function and forwarding function
Figure I.5 – Centralized control function and forwarding function
When the control function and the forwarding function are both deployed in a centralized manner, the
control function and the forwarding functions are able to dimension and scale independently, and hence, to
achieve more optimal processing and efficient resource utilization.
Case 2: centralized control function and distributed forwarding functions: traffic localization and latency
reduction
Figure I.6 – Traffic localization and latency reduction
When the forwarding function is deployed closer to the subscriber, the latency could be reduced and traffic
is also localized.
1) User equipment (UE) accesses the network and sets up a video conference.
2) The GW control function selects the forwarding function closest to the UE instead of the forwarding
function in the centre of the network, in order to localize the traffic and reduce the network latency.
3) The video conference is set up.
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