Micro-UPF

Technical Explanation

While 5G UPF instances were generally deployed in regional data centers or dedicated enterprise server closets, 6G introduces Micro-UPF: ultra-lightweight, stateless forwarding instances implemented with eBPF/XDP and WebAssembly that can be spun up in milliseconds on low-power devices. Micro-UPFs run on LEO satellites, smart lampposts, autonomous vehicle onboard units, and cellular base stations to terminate local data sessions with negligible latency overhead.

Key Functions

• Sub-millisecond localized packet routing and GTP-U/SRv6 decapsulation
• Instantaneous ephemeral spin-up and teardown in containerized and serverless environments
• Ultra-low memory footprint (<50 MB) suitable for embedded microcontrollers and cubesats
• Hardware-accelerated packet classification using eBPF and DPDK line-rate drivers
• Seamless session anchoring during rapid high-frequency handovers between micro-cells