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5G5G FundamentalsDraft — coming soon

gNB Explained

gNB explained: the 5G base station architecture, its CU/DU split, key interfaces (F1, Xn, NG), and how it differs from a 4G eNB.

By Manas·5 min read·Updated 2026-07-18

This article is a placeholder. Full write-up coming soon.

gNB explained: the 5G base station architecture, its CU/DU split, key interfaces (F1, Xn, NG), and how it differs from a 4G eNB.

What this article will cover

  • What a gNB is and its role in the 5G RAN
  • CU (Central Unit) and DU (Distributed Unit) functional split
  • Key interfaces: F1 (CU-DU), Xn (gNB-gNB), NG (gNB-core)
  • gNB vs eNB: what changed from 4G to 5G
  • Deployment models: co-located vs split gNB
5GRANgNB

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