Phase 11 — UE context release

UE Context Release Command (CU -> DU) with Cause: radioNetwork normal-release. The CU tells the DU to release this UE's context and radio resources — an orderly release (not a failure), consistent with a scripted registration-then-teardown capture.

It also embeds the UE's final RRCRelease, but as an opaque RRCContainer (00071000ff6c1afc) rather than a decoded message — Wireshark parses the RRC-Container inside a DL/UL RRC Transfer but not inside a Release Command. Those bytes are a PDCP PDU (SN 7) whose 1000 payload is a DL-DCCH rrcRelease plus its 4-byte MAC-I, in the clear because AS ciphering here is NEA0 (null). So the RRCRelease is delivered to the UE — embedded in the release command, not sent as its own message.

Message Details