name: CU
full_form: Control Unit
context: Figure A-1 shows logical nodes (CU-C, CU-U and DU), internal to a logical gNB/en-gNB. Protocol terminations of the NG and Xn interfaces are depicted as ellipses in Figure A-1. The terms "Central Entity" and "Distributed Entity" shown in Figure A-1 refer to physical network nodes. Figure A-1: Example deployment of an Logical gNB/en-gNB
description: The Control Unit (CU) is a logical node within the architecture of a gNB/en-gNB, which represents a next-generation NodeB or evolved NodeB in 5G networks. It is part of the RAN (Radio Access Network) and plays a crucial role in controlling and managing radio resources. The CU is typically responsible for higher-layer protocols and functions such as radio resource management, mobility control, and session management. In the context of Figure A-1, the CU is depicted as part of the logical gNB/en-gNB architecture, highlighting its importance in the overall network structure.
explanation: CU is classified as a Network Function because it serves as a key component within the gNB/en-gNB architecture, managing and controlling radio resources and higher-layer protocols. This aligns with the 3GPP's specifications for efficient RAN operations.
section_title: Annex A (informative): Deployment scenarios of gNB/en-gNB
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