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.

Supported E2 Metrics

E2SM-KPM report styles and metrics supported by OCUDU, with source nodes, units, and label restrictions.

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.