Aiming at 5 G access CU and DU separate networking framework

when the CU is set in the transmission aggregation room

DU is set in the service aggregation room or the base station room

5 G access is divided into three levels of fronthaul

midhaul and backhaul

at this time

the core fiber resources of the fronthaul network cable in 5 G access can meet the demand

but the capacity of the transmission system of the GE/10 GE PTN access layer cannot meet the development of the service network

at the same time

combined with the scale of construction of 5 G base station and investment costs

put forward 5 G access CU and DU separation scenarios

fronthaul network is built by fiber direct drive

midhaul network adopts transmission equipment construction.