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5G Core & User Plane

Cloud-native core datapaths: eBPF and XDP user planes, subscriber metering, and IMS voice.

3 parts·Jun 2026 - Aug 2026

  1. 1Jun 27, 2026From Kernel-Locked to Cloud-Native: Rebuilding Magma's 5G User Plane with eBPFThe 5G Core went cloud-native everywhere except the user-plane fast path, which stayed tied to Linux kernel internals. By moving GTP-U processing into three compact eBPF programs and leaving...BlogVideo
  2. 2Aug 5, 2026eUPF with SD-Core: PFCP Subscriber Metering and In-Kernel Quota EnforcementA high-performance 5G User Plane Function must do more than forward packets. In a commercial or private 5G network the user plane must also understand subscriber sessions, measure consumptio...BlogVideo
  3. 3Aug 23, 2026SD-Core with IMS: Voice, Video and Messaging through Kamailio and SETUSD-Core is an open 5G standalone core. Kamailio is an open IMS. Put them side by side and you still cannot make a phone call. Not because either is missing a feature, but because nothing con...BlogVideo