What challenges and use cases are associated with designing an optimization xApp for O-RAN?

In O-RAN (Open RAN), xApp communicates with RIC (Radio Intelligence Controller) to impose policies on the radio access network (RAN). The RIC is responsible for managing and coordinating the DUs (Distributed Units) and RUs (Radio Units) in the RAN. The workflow for this process is as follows:

  • xApp generates and sends a policy to the RIC.
  • The RIC receives the policy and translates it into a series of commands.
  • The RIC sends the commands to the relevant DUs and RUs.
  • The DUs and RUs execute the commands and update their configurations accordingly.
  • The RIC monitors the status of the DUs and RUs and reports back to the xApp.
  • The xApp has access to the status of the DUs and RUs and can make updates to the policies based on the received status.
  • In this way, xApp has access to both DU and RU activities through the RIC. The RIC acts as an intermediary between xApp and the DUs and RUs, ensuring that policies are applied consistently and effectively across the RAN.

    The Question is How can we read and check the xApp activities? its inside the RIC or logged in CU DU?

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