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Open RAN

Open RAN, or Open Radio Access Network architecture is based on 3GPP standards for Radio Access Networks (RAN) but contains many extensions, disaggregates RAN components and makes their interfaces open, aiming to improve flexibility and interoperability. RAN hardware and software are cloudified/virtualized, and it includes intelligent management (SMO).

Key components
In Open RAN, the RAN is split into three main blocks: the Radio Unit (RU), the Distributed Unit (DU), and the Centralised Unit (CU). RAN Intelligent Controller (RIC) is an optional virtualized optimization technology for 5G. It adds programmability to a new or existing RAN and allows SON-like (Self-Optimizing Networks) capabilities. The optimization in RIC is boosted by policy-driven closed loop automation and AI/ML. The fronthaul interface lies between radio Units (RU) and baseband units (Distributed Units (DU)). It is a focus area in Open RAN. O-RAN has specified an eCPRI-based 7.2x open interface to be used in the fronthaul, allowing connections between radio units and baseband units of different vendors. == O-RAN ALLIANCE ==
O-RAN ALLIANCE
O-RAN ALLIANCE (O-RAN) was founded in 2018 by AT&T, China Mobile, Deutsche Telekom, NTT DOCOMO and Orange to promote open mobile networks. O-RAN ALLIANCE also handles the activities of the earlier xRAN and C-RAN forums. == References ==
Source: Wikipedia ↗
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