Section: 4.4.2 Control Plane
Content: 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[ System architecture for the 5G System (5GS) ]  [3]), for instance: authentication, mobility management, security control… Figure 4.4.2-1: Control Plane Protocol Stack