Backhauling Bandwidth for 4G/5G Mobile RAN


I am trying to understand the Backhauling Bandwidth requirements needed to serve a each eNB RAN in 4G network so to deliver the best throughput of typical 4G speed.

Let us say if LTE-Adv 3-sectors-eNB could deliver speed up to 200 Mbps, what Backhauling Bandwidth is required to serve that 3-Sectors eNB?

Same question for 3-Sectors-gNB in 5G network (both SA, NSA) that could deliver typical 5G speed of 1Gbps?