The RAN Intelligent Controller (RIC) and the apps (xApps/rApps) act as the central nervous system and brain of the RAN.
▸ The RIC, along with the apps, enhances the intelligence of the RAN.
▸ The RIC is designed according to O-RAN standards.
▸ The RIC controls the RRM decisions for RAN functions.
▸ The RRM operations of traditional RAN functions are split with the RIC.
▸ There are two components of the RIC in the O-RAN-standard architecture.
▸ The Near-RT RIC is responsible for fine-grained RRM of control-plane and user-plane procedures.
▸ The Near-RT RIC hosts extensible applications (xApps) to control RRM decisions for individual RAN functionalities.
▸ The E2 interface connects the Near-RT RIC to RAN nodes.
▸ The Non-RT RIC is responsible for high-level declarative policies and training offline ML models.
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