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arXiv 2502.03300eess.SPcs.NI
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基于哈希进化策略的低延迟Wi-Fi网络可扩展干扰图学习

Scalable Interference Graph Learning for Low-Latency Wi-Fi Networks using Hashing-based Evolution Strategy

Singapore University of Technology and Design(新加坡科技设计大学);the University of Adelaide(阿德莱德大学)

Zhouyou Gu, Jihong Park, Jinho Choi

AI总结:

针对Wi-Fi 7密集网络中RTWT调度效率低的问题,提出一种可扩展的干扰图学习框架,利用进化策略训练神经网络并通过深度哈希函数降低复杂度,实现图着色调度,显著提升时隙效率并降低丢包率。

摘要:

Wi-Fi 7引入了受限目标唤醒时间(RTWT)机制,这对于需要周期性、可靠和低延迟通信的工业物联网(IIoT)应用至关重要。RTWT通过为站点(STA)分配预定的传输时隙来实现确定性信道接入,从而最小化竞争和干扰。然而,在密集网络中,确定高效的RTWT时隙分配仍然具有挑战性,传统的基于干扰图模型的方法缺乏灵活性和可扩展性。为了解决这个问题,我们提出了一种可扩展的干扰图学习(IGL)框架,该框架学习用于基于图着色的RTWT调度的最优干扰图表示。IGL利用进化策略(ES)通过单一的网络范围奖励来训练神经网络(NN),避免了昂贵的逐边反馈。此外,深度哈希函数(DHF)对干扰STA进行分组,将训练和推理限制在相关子集内,从而大大降低了复杂度。仿真结果表明,所提出的IGL在动态环境中将时隙效率提高了高达25%,将丢包率降低了高达30%。得益于DHF,它还将IGL的训练和推理时间分别减少了4倍和8倍,并且在大型网络中将在线时隙分配时间减少了3倍。

英文摘要:

Wi-Fi 7 introduces the restricted target wake time (RTWT) mechanism, which is vital for Industrial IoT (IIoT) applications requiring periodic, reliable, and low-latency communication. RTWT enables deterministic channel access by assigning scheduled transmission slots to stations (STAs), minimizing contention and interference. However, determining efficient RTWT slot assignments remains challenging in dense networks, where conventional interference graph-based models lack flexibility and scalability. To overcome this, we propose a scalable interference graph learning (IGL) framework that learns optimal interference graph representations for graph coloring-based RTWT scheduling. The IGL leverages an evolution strategy (ES) to train a neural network (NN) using a single network-wide reward, avoiding costly edge-wise feedback. Furthermore, a deep hashing function (DHF) groups interfering STAs, limiting training and inference to relevant subsets and greatly reducing complexity. Simulation results demonstrate that the proposed IGL improves slot efficiency by up to 25\%, reduces packet losses by up to 30\% in dynamic environments. Thanks to DHF, it also reduces the training and inference time of IGL by 4 and 8 times, respectively, and the online slot assignment time by 3 times in large networks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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