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Wireless & Mobility · Advanced

Open Radio Access Network (Open RAN)

An architecture with open, interoperable interfaces between disaggregated RAN components from different vendors.

Definition

Open RAN splits the base station into the radio unit (RU), distributed unit (DU), and centralized unit (CU), connected by open fronthaul and midhaul interfaces. The O-RAN Alliance also defines RAN Intelligent Controllers (near-real-time and non-real-time) for programmable optimization. It aims to increase vendor diversity.

Exam tip

O-RAN components: RU, DU, CU, and RIC.

Related terms