Nice video for Open RAN Beginners: Terminology – Virtualization, Disaggregation & Decomposition
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Disaggregated RAN Architecture 
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Disaggregated RAN (Radio Access Network) architecture is a modern approach to designing and implementing cellular networks by separating various RAN components to enable flexibility, scalability, and interoperability.
- Traditional vs. Disaggregated RAN
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1.1 Traditional RAN: The Baseband Unit (BBU), Remote Radio Head (RRH), and other components are tightly integrated within a single, proprietary hardware system.
1.2 Disaggregated RAN: The BBU, RRH, and other components are decoupled and can be implemented on different hardware platforms, enabling multi-vendor interoperability and a more flexible network design.
- Key Components
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2.1 Central Unit (CU): Manages control plane functions, such as radio resource management and mobility management 
2.2 Distributed Unit (DU): Handles data plane functions, such as baseband processing and radio signal transmission 
2.3 Radio Unit (RU): Converts digital signals from the DU into radio frequency signals for transmission to user devices 
- Benefits
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3.1 Flexibility: Decoupling RAN components allows operators to mix and match hardware and software solutions from different vendors, leading to more flexible and customizable networks 
3.2 Scalability: Disaggregated RAN makes it easier to scale network capacity by adding or upgrading individual components as needed
3.3 Cost Efficiency: By using open interfaces and off-the-shelf hardware, operators can reduce costs associated with proprietary systems 
3.4 Innovation: Open interfaces and multi-vendor support drive innovation, as companies can develop new solutions that work within the disaggregated RAN ecosystem 
Example: An operator can deploy a disaggregated RAN architecture with a Central Unit from Vendor A, a Distributed Unit from Vendor B, and a Radio Unit from Vendor C, all working seamlessly together to provide efficient and flexible network performance.
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