3.1. 3GPP Access Network ~ Next Generation- Radio Access Network (NG-RAN)

## RAN Overview ### NG-RAN defined by 3GPP ### O-RAN defined by Open-RAN ## Split option ## Architecture ### CU ### DU ### RU ## Interfaceses ### O1 () ### E2 ## Protocol ## Call Flow ## Opensource ### UERANSIM ### Openairinterface