O-RAN’s proposed concepts and architectures use a split-RAN concept. There are eight known ways to functionally split the RAN, and each one proposes splitting the processing so that different parts of the protocol stack process on different hardware. The below figure summarizes the eight options: O-RAN proposes using option 7-2 which splits the physical layer […]

In Split 7.2x: Low PHY/High PHY split, The Low PHY/High PHY split is the most acceptable approach for it is less complex and it supports various fronthaul requirements and most importantly it has high virtualization benefits. Split 7.2x is the O-RAN Alliance fronthaul specification between O-DU to O-RU. It has two variants: 7.2a and 7.2b based […]