Mitigating Interferences in 5G O-RAN HetNets Through ML-Driven xAPP to Enhance Users’ QoS

Abstract

In today’s rapidly evolving telecommunications landscape, the demand for seamless connectivity and top-tier network performance has reached unprecedented levels. Traditional cellular systems, while valiant in their service, now struggle under the weight of spiraling data demands, spectrum scarcity, and power inefficiency. The era of ultra-dense mobile networks, with Heterogeneous Networks (HetNets) at the forefront, ushers in improved throughput, spectral efficiency, and energy management. To tackle these challenges, this paper introduces MLCIMO (Machine Learning-enhanced Classification for Interference Management and Offloading) into 5G HetNets. MLCIMO employs a multi-binary classification strategy to categorize users based on interference types and levels. It also introduces an offloading scheme tailored to user service priorities, enhancing the user quality of experience, while conserving energy. It seamlessly aligns with the evolving needs of the HetNets, addressing some of the issues introduced by small cell deployments. Simulation results show that MLCIMO achieves the highest throughput, shortest delay, and lowest packet loss ratio in comparison with alternative approaches. In a comprehensive analysis, the varying degrees of interference encountered by users under different schemes are unveiled, further establishing MLCIMO’s distinguished position in mitigating interference.