Knowledge Base

This section covers the 5G NR and O-RAN architecture concepts that underpin OCUDU: how a gNB is structured, how its components interact, and how the interfaces between them are defined.

If you are new to the architecture, start with the O-RAN gNB Overview. The other articles build on that foundation.

O-RAN Overview

The architecture of an O-RAN compliant gNB, split 7.2, and how OCUDU implements it.

CU/DU Components

The roles and protocol layers of the CU, DU, and RU, and the boundaries between them.

O-RAN Interfaces

The purpose, message types, and connected components for the E1, E2, F1, FAPI, NG, O1, and Open FrontHaul interfaces.

COTS UEs

Commercial UEs tested with OCUDU, with confirmed bands, configurations, and user-reported working devices.

Glossary

5G NR and O-RAN terms and abbreviations used throughout the OCUDU documentation.