Which feature in eNodeB enables 5G logo on handset?

Hello Experts.

Which feature in eNodeB enables 5G logo on handset?

This depends on UE type.

Read this http://www.5g-bullets.com/5G%20in%20Bullets%20-%20LTE_Idle_Mode_Sample.pdf

Yes, but I want to see the capability in RAN side. I mean Airscale (Nokia).

Is it something related to cell broadcast? I supposeā€¦

In previous generations it was taken care of by CBCH.