Systems and methods for supporting communication between user equipments (UEs) camping on a local area network (LAN)

A method for supporting communication between user equipments (UEs) camping on a local area network (LAN), the method being performed by a user plane function (UPF) and comprising:

• receiving a transmission comprising a protocol data unit (PDU) transmitted by a first UE, wherein the PDU includes at least a destination address of a second UE;
• using information included in the transmission to find a first packet detection rule (PDR) matching information included in the transmission, wherein the first PDR identifies a first forwarding action rule (FAR), wherein the first FAR includes an indication indicating that the PDU requires further ingress processing;
• obtaining information included in the first FAR;
• after obtaining the information included the first FAR, identifying an N4 session;
• and
• after identifying the N4 session, finding a default PDR associated with the N4 session, wherein the default PDR identifies a default FAR and/or a default usage reporting rule (URR), wherein
• the default FAR is configured to cause the UPF to transmit the PDU to a Session Management Function (SMF), or
• the default URR is configured to cause the UPF to transmit to the SMF Session Report Request message comprising at least a portion of the PDU.