US Patent 11050788 SEPP registration, discovery and inter-PLMN connectivity policies

Presented herein is a Security Edge Protection Proxy (SEPP) fully defined as a 5G network function (NF) that registers and is discoverable by consumer NFs. Inter-Public Land Mobile Network (PLMN) roaming connectivity polices enable the SEPP in the visiting PLMN to select the SEPP per producer NF-Type in the home PLMN, and to select a direct route between PLMNs or an indirect route via one or more an Internetwork Packet Exchange (IPX) providers.