What is vEPC?
vEPC (Virtual Evolved Packet Core) is a 4G LTE core network implemented using virtualised network functions (VNFs) running on general-purpose computing hardware, rather than proprietary purpose-built appliances. vEPC leverages NFV (Network Functions Virtualization) and SDN (Software-Defined Networking) to deploy the EPC functions (MME, S-GW, P-GW, HSS) as software instances on commercial off-the-shelf (COTS) servers. vEPC was a critical stepping stone toward the fully cloud-native 5G Core architecture.
How Does vEPC Work?
In a vEPC deployment, each EPC network function is packaged as a virtual machine (VM) or container and runs on a standard x86 server platform managed by an NFV infrastructure (NFVI) — typically OpenStack or VMware. The virtual MME, vS-GW, and vP-GW communicate via the same 3GPP interfaces (S1, S5/S8, S11) as their physical counterparts. An NFV orchestrator (MANO) manages deployment, scaling, and lifecycle of the VNFs. vEPC enables operators to scale capacity dynamically, reduce hardware costs, accelerate feature deployment, and co-locate EPC functions with MEC applications. Many operators deployed vEPC as preparation for cloud-native 5GC, gaining operational experience with virtualised core networks.
Use Cases
4G LTE core network modernization, private LTE/4G enterprise deployments, 5G NSA core (supporting EN-DC with vEPC), lab and test environments, and low-cost core deployment for MVNOs and rural networks.
3GPP / Standards Reference
3GPP TS 23.401 (EPC architecture), ETSI NFV specifications (GS NFV), ETSI MEC specifications (vEPC co-location with MEC)
Related Terms
EPC | SDN | NGC | Core Network | SA
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This glossary entry is part of the 5GWorldPro Complete 5G Glossary. To go deeper into 5G architecture and technology, explore our 5G Training courses.
