用生成模型实现大规模多接入点协同,提升密集网络频谱利用率。
FM4WiFi: Flow Matching for Multi-AP Coordination in Dense Deployments of Beyond Wi-Fi 8 Networks

- 基于流匹配生成器快速产出协同传输配置
- 支持30个以上接入点,推理时间低于1秒
- 无需真实系统即可高效评估方案,适合大规模部署
Wi-Fi网络正从随机信道接入转向多接入点(AP)间的紧密协同,这一趋势体现在Wi-Fi 8的多接入点协同(MAPC)中。然而当前MAPC仅限于成对协作,难以在密集部署中实现更大收益,亟需超越Wi-Fi 8的可扩展网络级协同机制。本文聚焦协同空间复用(Co-SR),即多个AP以降低功率并发传输。有效Co-SR需联合选择与配置AP-终端通信,但现有方法存在信号开销大、收敛慢、假设不切实际、计算时间随网络规模指数增长等问题。我们提出FM4WiFi,一种生成式机器学习流程,可在单次推理中生成高质量的Co-SR配置。该方案包含:(i) 自编码器学习网络状态的紧凑隐表示,(ii) 流匹配生成模型合成可行的Co-SR配置(含速率控制,此前未被考虑),(iii) 代理速率预测器实现无需依赖真实系统或数字孪生的大规模候选方案快速评估。在广泛实验(包括实测验证)中,FM4WiFi在中大型规模下达到或超越现有最优基准,并可扩展至30+接入点,推理时间低于1秒。大量消融实验验证了各建模与优化设计的有效性。
原文摘要 · Abstract (English)
Wi-Fi networks are moving beyond random channel access toward tightly coordinated operation across access points (APs), a shift reflected in Wi-Fi 8's multi-AP coordination (MAPC). However, the current MAPC specification restricts cooperation to AP pairs, fundamentally limiting the gains achievable in dense deployments and calling for scalable, network-wide coordination in beyond Wi-Fi 8 systems. We target coordinated spatial reuse (Co-SR), where APs transmit concurrently at reduced power. Effective Co-SR demands joint selection and configuration of AP-station transmissions, yet existing approaches simply do not scale: they rely on heavy signaling, slow convergence, unrealistic assumptions, and often require computation time that explodes with network size. We introduce FM4WiFi, a generative ML pipeline that addresses these limitations by producing high-quality Co-SR configurations in a single inference step. FM4WiFi integrates (i) an autoencoder that learns compact latent representations of network states, (ii) a flow-matching generative model that synthesizes feasible Co-SR configurations (including rate control, absent from prior work), and (iii) a surrogate rate predictor that allows rapid, large-scale Co-SR candidate evaluation without dependence on a live system or digital twin. Across extensive evaluations (including experimental validation), FM4WiFi matches or exceeds state-of-the-art baselines at medium-to-large scales and scales to 30+ APs with sub-second inference. Extensive ablation studies validate each modeling and optimization choice.
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