3GPP 38.300 v19.3.0 — the document's own text
4.4.2 Control Plane
Taught in 2. The six working groups, and where the line between them runs (TSG RAN — the group that specifies the radio, in depth), 5. The radio protocol stack, sublayer by sublayer (TSG RAN — the group that specifies the radio, in depth), 5. The layers a packet falls through, and the three states a device sits in (TSG RAN — the group that specifies the radio, overview), 3. What NR is, read off the document itself (TSG RAN — the group that specifies the radio, quick start).
The figure below shows the protocol stack for the control plane, where:
- PDCP, RLC and MAC sublayers (terminated in gNB on the network side) perform the functions listed in clause 6;
- RRC (terminated in gNB on the network side) performs the functions listed in clause 7;
- NAS control protocol (terminated in AMF on the network side) performs the functions listed in TS 23.501 [3]), for instance: authentication, mobility management, security control…
