What will be the state in 5g core nw when ue will be in rrc inactive state?

Question

Assume UE in mobility and RRC inactive sate,once UE wants to make any data connection how UE will be authenticated to make data connection ,because they claim it wont involve any authentication procedure and unnecessary control message then how it will be authenticated?

Answer 1

5G RAN maintains the UE context even after UE moves from RRC_CONNECTED to RRC_INACTIVE state. In this RRC state, 5G RAN still maintains NG interface associated signaling context. Since 5G RAN already has NG interface context, UE state would be CM-CONNECTED. 5G core network maintains registration and connection management states separately for an UE.
Connection management states such as CM-IDLE and CM-CONNECTED based on the UE states at RRC layer of 5G RAN.
If we compare with LTE network, it is almost similar.