Linda,
In the central PSA UPF model, the gNB-UPF N3 interface is over an IP network
that is typically implemented as a VPN (referred to as N3VPN). It has PEs close
to gNBs and UPFs. What this draft does is moving the central PSA UPF
functionality to the MUP GWs (which are N3VPN PEs close to
Jeffery and Keyur,
5G has distributed UPFs, UPFs can collocate with gNB. Therefore, there might
not be a router between gNB and UPFs.
All the traffic out of UPFs (on N6 interfaces) are carried by IP networks.
So what does MUP do?
Linda
From: Keyur Patel
Sent: Tuesday, April 5, 2022 1:45 PM
