Section: 5.3 Control plane
Content: Figure 5.3-1 shows the control plane (signalling) protocol stacks on NG and Uu interfaces. Note 1: The radio interface protocols are defined in TS 38.2[ None ] xx and TS 38.3[ None ] xx. Note 2: The protocol is defined in TS 38.41[ None ] x. (Description of NG interface). Note 3: CM, SM: This exemplifies a set of NAS control protocols between UE and 5GC. The evolution of the protocol architecture for these protocols is outside the scope of the present document. Figure 5.3-1: NG and Uu control plane NOTE: Both the Radio protocols and the NG protocols contain a mechanism to transparently transfer NAS messages.