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1. Introduction & Structural Background The transition from traditional monolithic Base Stations to disaggregated Open Radio Access Networks (O-RAN) has fundamentally reshaped the telecommunications industry. In a classic Distributed RAN (D-RAN), the baseband processing and RF frontends are tightly integrated using proprietary point-to-point protocols like the Common Public Radio Interface (CPRI). CPRI transmits continuous time-domain, uncompressed In-phase and Quadrature (IQ

1. Introduction Radio Access Networks are becoming more software-driven, disaggregated, and automation-centric. To handle the complexity of dense deployments, Massive MIMO, spectrum fragmentation, and diverse traffic profiles, operators are moving toward intelligent control loops in the RAN.This is where O-RAN Alliance’s RAN Intelligent Controller (RIC) architecture—featuring rApps (non-real time, >1 second) and xApps (near-real time, 10 ms–1 s)—comes into play. These applica

Introduction O-RAN (Open Radio Access Network) represents a paradigm shift in mobile network design, transforming traditional, vendor-locked RAN systems into open, interoperable, and intelligent ecosystems. It disaggregates hardware and software components, virtualizes RAN functions, and introduces open interfaces and AI/ML-driven automation for optimization and orchestration . The O-RAN architecture decouples the traditional base station into: O-CU (Central Unit): Located

Introduction Artificial Intelligence (AI) and Machine Learning (ML) are becoming integral to the evolution of 5G Radio Access Networks...

Introduction The transition from 4G to 5G is not just a generational shift in radio technology but a complete transformation of the core...

Introduction The O-RAN Alliance Workgroup 4 (WG4) focuses on defining open fronthaul interfaces between the O-DU (Distributed Unit) and...