Methods to support User Plane Separation (UPS) and User Plane Local offloading (UPL) for Fifth Generation (5G) non-Third Generation Partnership Project (3GPP) access are provided, including solutions for untrusted non-3GPP, trusted non-3GPP, and fixed/wireline communications via a Non-3GPP interworking Function (N3IWF) node. Three UPS solutions methods are provided, as well as UPL solution methods for 5G non-3GPP access involving N3IWFs with or without separated Control Plane (CP) and User Plane (UP) that are combined with a User Plane Function (UPF). Solutions to allow multiple CP entities to control the same single UP entity are also provided.