MEC
Multi-access Edge Computing: a technology that brings compute and storage resources to the network edge, reducing latency by processing data closer to the end user or device.
MEC pushes compute and storage out to the edge of the network — at or near the base stations and aggregation sites — so applications run close to where the data is generated instead of in a distant central cloud. The driver is latency and backhaul: if a factory robot, an AR headset, or a vision-analytics camera can hit a server one hop away, you cut both the round-trip time and the volume of traffic dragged back to the core.
In 5G it pairs naturally with the user plane. You place a UPF at the edge and steer the relevant traffic to a local data network, so selected flows break out locally to a MEC platform while everything else carries on to the central core — and the AF/NEF machinery can influence that steering per application. ETSI standardised a MEC framework (originally "Mobile" edge computing, renamed "Multi-access" to cover non-cellular access too). Typical homes for it: private 5G, live video, gaming, and industrial IoT where the latency budget is tight.
Frequently asked questions
- How does MEC actually reduce latency in a 5G network?
- By shortening the path the data travels. Normally user traffic goes from the device through the RAN and core out to a central cloud. MEC places compute at the edge and uses a local UPF to break selected traffic out near the access point, so the application server is one or two hops away instead of across the country. Less distance and fewer hops mean lower round-trip time — and less traffic loaded onto the backhaul to the core.
Related terms
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