Artificial Intelligence for Network Resource Allocation and Spectrum Management in 5G and 6G: A Systematic Review
Abstract
The rapid growth of wireless connectivity has intensified the demand for efficient utilization of spectrum, computing resources, energy, and network infrastructure. Dynamic resource allocation is particularly challenging in 5G and emerging 6G networks because of heterogeneous users, diverse service requirements, dense deployments, and rapidly changing channel and traffic conditions. Artificial Intelligence (AI) offers adaptive mechanisms for learning complex resource-management policies and optimizing network performance. This review provides a systematic analysis of AI-based techniques for spectrum allocation, power control, channel assignment, beam management, user association, computation allocation, and radio-resource management. Supervised learning, unsupervised learning, deep learning, reinforcement learning, and multi-agent reinforcement learning approaches are categorized and compared. The review examines optimization objectives including spectral efficiency, energy efficiency, latency, fairness, reliability, and throughput. Particular attention is given to distributed intelligence and edge-based learning for reducing decision latency. Key challenges involving training complexity, non-stationary environments, scalability, interference, privacy, and model robustness are discussed. The paper identifies open research directions for AI-native resource management in future 6G networks
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