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1) Introduction The 5G NR gNB split architecture divides the base station into functional entities — Central Unit (CU) , Distributed Unit (DU) , and Radio Unit (RU)  — to optimize deployment flexibility, scalability, and performance. This functional split enables c entralized control and distributed radio processing, allowing operators to balance latency-sensitive tasks at the edge (DU/RU) with higher-layer functions centralized (CU). The split reduces fronthaul bandwidth dem