The objective of this Technical Report is to study enhancements of 5GS architecture that has been defined in Rel-15
about the topology of SMF and UPF, and:
investigate mechanisms to enable the 3GPP system to support deployments where a SMF is not able / allowed to
control UPF(s) throughout the same PLMN.
Study whether it is needed to enhance the capability of 5GS architecture for a UPF to be controlled by multiple
SMF's (and many UPF's to be controlled by many SMFs) and, if yes, define such enhancements.
For these objectives, use cases will be defined.