This video / presentation looks at how RRC states have changed from 3G to 4G and not to 5G NR. Why was the new RRC_INACTIVE state introduced; how will it reduce the latency which will help URLLC; what are the different NAS states in 4G EPC and 5G Core and how do they map to RRC and UE states. Finally we look at some basic signalling example to understand the RRC Resume and Inactive state.
VIDEO
SLIDES
You can download the slides here.