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计算机工程 ›› 2026, Vol. 52 ›› Issue (8): 260-271. doi: 10.19678/j.issn.1000-3428.0070553

• 新一代网络与边缘计算 • 上一篇    下一篇

AoI驱动的空-地协同移动群智感知与计算

汤晓畅1,2, 徐海星1,2, 沈炳楠1,2, 王亮1,2,*(), 於志文1,2   

  1. 1. 西北工业大学计算机学院, 陕西 西安 710129
    2. 人机物融合群智计算教育部重点实验室, 陕西 西安 710129
  • 收稿日期:2024-10-29 修回日期:2025-01-06 出版日期:2026-08-15 发布日期:2025-03-06
  • 通讯作者: 王亮
  • 作者简介:

    汤晓畅(CCF学生会员), 男, 硕士研究生, 主研方向为移动群智感知

    徐海星, 硕士研究生

    沈炳楠, 硕士研究生

    王亮(通信作者), 教授

    於志文, 教授

  • 基金资助:
    国家自然科学基金(62332014); 陕西省自然科学基础研究计划(2023-JC-JQ-54); 陕西省重点研发计划(2024GX-YBXM-006)

AoI-Driven Air-Ground Collaborative Mobile Crowd Sensing and Computing

TANG Xiaochang1,2, XU Haixing1,2, SHEN Bingnan1,2, WANG Liang1,2,*(), YU Zhiwen1,2   

  1. 1. School of Computer Science, Northwestern Polytechnical University, Xi'an 710129, Shannxi, China
    2. Key Laboratory of Human-Cyber-Physical Ternary Crowd Computing, Ministry of Education, Xi'an 710129, Shannxi, China
  • Received:2024-10-29 Revised:2025-01-06 Online:2026-08-15 Published:2025-03-06
  • Contact: WANG Liang

摘要:

为了克服传统的"以人为中心"移动群智感知(MCS)在感知时效性、全局性等方面的局限与不足, 提出一种人机混合下的空-地协同移动群智感知与计算框架, 低空无人机与地面参与者充分利用各自的感知、计算资源, 通过协同交互的方式实现数据感知与计算的本地化。考虑到延迟敏感型应用场景对感知服务时效性的强需求, 将信息年龄(AoI)指标引入上述框架中, 通过联合优化无人机移动轨迹, 将移动端设备计算卸载至无人机的选择变量以及数据卸载比例, 最终实现所有感知数据的AoI最小化。为了实现上述目标, 设计一种多智能体深度强化学习(DRL)算法CAMATD3, 结合多智能体双延迟深度确定性策略梯度MATD3的双Q学习机制和深度Q网络(DQN)的训练机制; 同时针对性地提出了分阶段决策机制和完整经验存储策略, 以解决优化过程中混合动作空间所带来的问题。仿真实验结果表明, 所提的CAMATD3算法在智能体训练效果和AoI最小化方面显著优于现有方法, 有效提升了数据感知的时效性。

关键词: 无人机, 移动群智感知, 信息年龄, 数据卸载, 深度强化学习

Abstract:

To address the limitations and deficiencies of traditional ″human-centered″ Mobile Crowd Sensing(MCS) in terms of timeliness and global sensing coverage, this study proposes a human-Unmanned Aerial Vehicle (UAV) hybrid air—ground collaborative MCS and computing framework. In this framework, low-altitude UAVs and ground participants fully leverage their respective sensing and computing resources through collaborative interactions to achieve localized data sensing and computation. Considering the stringent requirements for data timeliness in delay-sensitive application scenarios, the Age of Information (AoI) metric is introduced into this framework. By jointly optimizing UAV flight trajectories, selection variables for offloading computations from mobile devices to UAVs, and data offloading ratios, the framework aims to minimize the AoI of all sensed data. To achieve this objective, a multi-agent Deep Reinforcement Learning (DRL) algorithm CAMATD3 is designed, which combines the dual Q-learning mechanism of multi-agent twin delayed deep deterministic policy gradient MATD3 with the training mechanism of Deep Q-Networks (DQN). Additionally, a phased decision-making mechanism and comprehensive experience replay strategy are proposed to address the challenges posed by the hybrid action space during the optimization process. The simulation results demonstrate that the proposed CAMATD3 algorithm significantly outperforms existing methods in terms of agent training effectiveness and AoI minimization, thereby substantially improving the timeliness of data sensing.

Key words: Unmanned Aerial Vehicles (UAV), Mobile Crowd Sensing(MCS), Age of Information (AoI), data offloading, Deep Reinforcement Learning (DRL)