UPF Selection Algorithm

The SMF determines the UPF node based on an algorithm.

The following figure depicts the UPF node selection workflow.
UPF Node Selection Workflow

The UPF nodes are listed based on the priority assigned to the node. When there are multiple nodes with the same priority value, then the SMF selects a UPF experiencing the lowest level of load. The load parameter is applied only for UPFs that have the same priority.