Changelog

July 2, 2026 · View on GitHub

All notable changes to nextgcore are documented here. The format is based on Keep a Changelog, and the project aims to follow Semantic Versioning.

Scope of validation. nextgcore is a research/interop implementation, not a production-certified 5G core. Conformance is verified against 3GPP spec text, hand-derived golden byte-vectors, strict-peer tests (one NF driving another NF's real handler), and the matched-simulator end-to-end suite. It has not been run against a TTCN certification suite or an independent third-party gNB/UE/core.

[Unreleased]

Nothing yet.

[0.1.0] — 2026-07-02

First release aligning the core with the 3GPP Rel-15/16/17/18 procedures and adding a full matched-simulator data-plane validation path. 25 NF binaries + 17 shared libraries, zero C dependencies. Dual 5G-SA / 4G-EPS (5GS↔EPS interworking retained).

Added

  • One-command matched-sim E2E (docker/rust/e2e.sh): disk preflight (#269 guard) → build → registration + PDU session + user-plane ping through the GTP-U tunnel. 84/84 green.
  • Positioning (lmfd↔amfd): LMF-initiated LPP/NRPPa over Namf_Communication N1N2, uplink NRPPa ingest, measurement-derived location fixes (TS 23.273 / 29.572 / 37.355 / 38.455).
  • UE policy (pcfd): URSP delivery via a real UPDP codec and N1 chain (TS 24.501 Annex D / 24.526).
  • SoR/UPU Part B (udmd/ausfd): SoR-MAC-IAUSF / UPU-MAC-IAUSF (TS 33.501 §6.14/6.15).
  • SIDF (udmd): SUCI de-concealment at the UDM; the UDR only ever sees the SUPI (§6.12).
  • NRF security (nrfd): CCA ES256-JWS verification + token-requester transport auth (TS 29.510 §13.3.8.3).
  • SEPP (seppd): N32-c certificate signing-key path.
  • Standard OAuth2 on the SBI layer (/oauth2/token, TS 29.510).
  • Edge (eesd): spec-exact ACInfoSubscription / EECContextPush bodies + notifier.
  • MBS (mbsmfd): N2 multipart ContextUpdate + NGAP MBS transfer ASN.1 (TS 29.532).
  • Analytics (nwdafd): real per-NF NF_LOAD ingestion via NRF NFStatusSubscribe (TS 29.520).
  • Slice admission (nsacfd): slice-quota provisioning from config (TS 29.536 §6.1.3.4).
  • Test infrastructure: amfd/pcfd/udmd/ausfd/bsfd split into lib+bin so cross-NF tests drive the peer's real handler; hand-derived golden byte-vectors for the wire encoders.

Fixed

  • nsacfd did not provision its configured slice quotas → 403'd every PDU session (5GSM cause #67), taking down the whole data plane. Now provisioned per TS 29.536, with an SST-wide quota covering SD-specific requests.
  • amfd never discovered the NSACF on-demand and dropped NSACF NRF profiles → slice admission was silently degrade-open. On-demand NRF discovery added (TS 29.510).
  • NAS/NGAP/PFCP wire fixes across the fleet (e.g. amfd T3512 GPRS-timer unit, smfd PFCP PDI UE-IP S/D flag, udrd SQN side-effects).
  • CI-flaky tests sharing a process-global NF context / env under parallel cargo test serialized on a per-crate test guard (nsacfd, udmd, ausfd).

Changed

  • Documentation synced with the code (getting-started, docker/E2E, per-component gap docs, NF table).
  • Honesty pass: dropped "production-ready" framing; 6G/Rel-20 items are research prototypes.

Validation

  • cargo test --workspace: 5170 passed / 0 failed · clippy: 0 errors · fmt: clean · Docker E2E: 84/84.

[0.0.1] — 2026-03-08

  • Initial public tag.