6G超密集组网中的干扰管理是业界难题，FedCritic用无服务器联邦学习解决了集中式训练的高开销问题，做无线资源调度和网络优化的研究者可以直接参考其轻量级协调方案。
针对6G超密集网络中同频干扰严重的问题，研究者提出了一种名为FedCritic的无服务器联邦多智能体演员-评论家框架，用于联合子载波调度和功率分配。该框架通过虚拟队列赤字权重强制执行长期服务质量约束，并利用基于干扰图的轻量级八卦参数平均来联邦化评论家网络，无需中央协调器即可实现稳定价值估计。仿真表明，在干扰密集的复用-1场景下，FedCritic相比非协调和集中式训练分散执行基线，显著提升了平均信干噪比、小区边缘速率、网络总速率和公平性，同时训练更稳定且协调开销更低。这项工作为6G分布式资源管理提供了一种高效、可扩展的解决方案。
FedCritic: Serverless Federated Critic Learning-based Resource Allocation for Multi-Cell OFDMA in 6G
In sixth-generation (6G) ultra-dense networks, aggressive frequency reuse amplifies inter-cell interference (ICI), making multi-cell orthogonal frequency-division multiple access (OFDMA) scheduling and power control strongly coupled across neighboring cells. We study distributed downlink resource management -- joint subcarrier scheduling and power allocation -- under interference coupling and long-term per-user quality-of-service (QoS) minimum-rate constraints. By using virtual-queue deficit weights to enforce long-term QoS, we develop FedCritic, a serverless federated multi-agent actor-critic framework with decentralized execution. Unlike centralized training with decentralized execution (CTDE) approaches that require centralized critic learning and joint trajectory aggregation, FedCritic federates the critic through lightweight gossip-based parameter averaging over the interference graph, enabling stable value estimation without a central coordinator while keeping policies local. Simulations in an interference-rich reuse-1 setting show that FedCritic improves mean signal-to-interference-plus-noise ratio (SINR) and cell-edge rate, increases network-wide average sum-rate and fairness relative to non-coordinated and CTDE baselines, and achieves more stable training with lower coordination overhead.