CoDR: A Conflict Detection and Resolution Framework for Multi-rApp Deployments on the O-RAN Non-RT RIC

The O-RAN Non-Real-Time RAN Intelligent Controller enables operators to deploy multiple third-party rApps that automate radio access network (RAN) management. When rApps with competing objectives operate concurrently, their actions can conflict and silently degrade network performance, yet no framework for detecting and resolving such conflicts has been experimentally validated. We propose a four-category conflict taxonomy and design CoDR (Conflict Detection and Resolution), which intercepts rApp intents, detects conflicts via a layered pipeline, and applies configurable resolution strategies. CoDR is implemented on the O-RAN Software Community (OSC) platform and evaluated on a multi-cell simulated testbed with five concurrent rApps. Results show that unmanaged conflicts degrade cell throughput by 21% and increase handover failures by nearly 5× . CoDR detects conflicts with 92.6% precision and 86.7% recall at 12 ms median latency, and a hybrid resolution strategy recovers up to 87% of the lost throughput while keeping the mean resolution overhead at 38 ms.