H. Nguyen

GradFA: A Unified Gradient-Based Attribution Framework for Backdoor Detection and Mitigation in DRL-Based O-RAN xApps

The Open Radio Access Network (O-RAN) xApp marketplace lets operators deploy third party deep reinforcement learning (DRL) applications into the Near-Real-Time RAN Intelligent Controller (Near-RT RIC), yet provides no way to verify the integrity of a submitted model. To tackle the problem, we propose GradFA (Gradient-b...