COMIX is a conflict detection and resolution framework for O-RAN xApps that uses a digital twin to evaluate conflicting power-control actions before applying them to the live network.
xApp-Level Conflict Mitigation in O-RAN, a Mobility Driven Energy Saving Case
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This paper investigates the emerging challenges of conflict detection and mitigation in Open Radio Access Network (O-RAN). Conflicts between xApps can arise that affect network performance and stability due to the disaggregated nature of O-RAN. This work provides a detailed theoretical framework of Extended Application (xApp)-level conflicts, i.e., direct, indirect, and implicit conflicts. Leveraging conflict graphs, we further highlight how conflicts impact Key Performance Indicators (KPIs) and explore strategies for conflict detection using Service Level Agreements (SLAs) and Quality of Service (QoS) thresholds. We evaluate the effectiveness of several mitigation strategies in a simulated environment with Mobility Robustness Optimization (MRO) and Energy Saving (ES) xApps and present experimental results showing comparisons among these strategies. The findings of this research provide significant insights for enhancing O-RAN deployments with flexible and efficient conflict management.
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COMIX: Generalized Conflict Management in O-RAN xApps -- Architecture, Workflow, and a Power Control case
COMIX is a conflict detection and resolution framework for O-RAN xApps that uses a digital twin to evaluate conflicting power-control actions before applying them to the live network.