O-RAN is an open architecture that decomposes 5G RAN elements, it allows interoperability standard for RAN elements including non-proprietary white box hardware and software from different vendors. A 5G O-RAN introduces a new architecture which includes key components in a 5G RAN
O-RAN Radio Unit (O-RU)
for processing the lower part of the physical layer
O-RAN Distribute Unit (O-DU)
for baseband processing, scheduling, radio link control medium access control, and the upper part of the physical layer
O-RAN Central Unit (O-CU)
for the packet data convergence protocol layer
O-RAN Intelligent Controller (O-RIC)
to gather information from the network and perform the necessary optimization tasks
Benefits of O-RAN architecture
Open Ran distributes the different RAN functions into different modules which allows it to reduce and ease operational aspects.
By introducing Non-RT RIC and Near-RT RIC concepts, the O-RAN architecture allows for an optimized and fine-tuned control of the Radio resource management which allows to improve *QoS, enhance load balancing or multi-connection control.
This split architecture eases the upgrade of the different modules with its native cloud support.
As a strong contributor to the OAI roadmap, Firecell supports the O-RAN and Open Air interface pairing.