9 papers
FairShare: Auditable Geographic Fairness for Multi-Operator LEO Spectrum Sharing
Seyed Bagher Hashemi Natanzi, Hossein Mohammadi, Vuk Marojevic +1
Dynamic spectrum sharing (DSS) among multi-operator low Earth orbit (LEO) mega-constellations is essential for coexistence, yet prevailing policies focus almost exclusively on inte…
SliceFed: Federated Constrained Multi-Agent DRL for Dynamic Spectrum Slicing in 6G
Hossein Mohammadi, Seyed Bagher Hashemi Natanzi, Ramak Nassiri +3
Dynamic spectrum slicing is a critical enabler for 6G Radio Access Networks (RANs), allowing the coexistence of heterogeneous services. However, optimizing resource allocation in d…
AI-Driven Fuzzing for Vulnerability Assessment of 5G Traffic Steering Algorithms
Seyed Bagher Hashemi Natanzi, Hossein Mohammadi, Bo Tang +1
Traffic Steering (TS) dynamically allocates user traffic across cells to enhance Quality of Experience (QoE), load balance, and spectrum efficiency in 5G networks. However, TS algo…
Next Generation Intelligent Low-Altitude Economy Deployments: The O-RAN Perspective
Aly Sabri Abdalla, Vuk Marojevic
Despite the growing interest in low-altitude economy (LAE) applications, including UAV-based logistics and emergency response, fundamental challenges remain in orchestrating such m…
Secure mmWave Beamforming with Proactive-ISAC Defense Against Beam-Stealing Attacks
Seyed Bagher Hashemi Natanzi, Hossein Mohammadi, Bo Tang +1
Millimeter-wave (mmWave) communication systems face increasing susceptibility to advanced beam-stealing attacks, posing a significant physical layer security threat. This paper int…
Federated Neuroevolution O-RAN: Enhancing the Robustness of Deep Reinforcement Learning xApps
Mohammadreza Kouchaki, Aly Sabri Abdalla, Vuk Marojevic
The open radio access network (O-RAN) architecture introduces RAN intelligent controllers (RICs) to facilitate the management and optimization of the disaggregated RAN. Reinforceme…