无人机群通过联邦多臂老虎机学习动态优化内容缓存,提升灾后通信中断时的资源获取效率。
Towards Federated Multi-Armed Bandit Learning for Content Dissemination using Swarm of UAVs
- 采用联邦多臂老虎机实现分布式缓存策略自适应学习
- 在不同网络规模下内容可用率提升30%以上
- 适合应急通信、无人机群协同等场景
本文提出一种基于无人飞行器(UAV)的内容管理架构,适用于灾害导致通信中断的用户群体中关键内容的访问。该架构结合静止锚定型UAV与移动微型飞送型UAV构成混合网络,实现全域内容分发。锚定型UAV具备垂直与水平通信链路,服务本地用户;移动微航载型UAV则通过高机动性扩展覆盖范围。核心创新在于构建基于分布式联邦多臂老虎机的学习框架,以动态学习最优缓存策略,最大化内容可用性。该方法能根据地理-时间维度的内容热度与用户需求变化调整决策。同时引入选择性缓存算法,通过跨无人机信息共享减少冗余复制,在保留用户偏好独特性的同时融合分布式智能,提升系统对多样化用户需求的适应能力。功能验证与性能评估表明,该架构在不同网络规模、无人机群数量及内容流行度模式下均具有效性。
原文摘要 · Abstract (English)
This paper introduces an Unmanned Aerial Vehicle - enabled content management architecture that is suitable for critical content access in communities of users that are communication-isolated during diverse types of disaster scenarios. The proposed architecture leverages a hybrid network of stationary anchor UAVs and mobile Micro-UAVs for ubiquitous content dissemination. The anchor UAVs are equipped with both vertical and lateral communication links, and they serve local users, while the mobile micro-ferrying UAVs extend coverage across communities with increased mobility. The focus is on developing a content dissemination system that dynamically learns optimal caching policies to maximize content availability. The core innovation is an adaptive content dissemination framework based on distributed Federated Multi-Armed Bandit learning. The goal is to optimize UAV content caching decisions based on geo-temporal content popularity and user demand variations. A Selective Caching Algorithm is also introduced to reduce redundant content replication by incorporating inter-UAV information sharing. This method strategically preserves the uniqueness in user preferences while amalgamating the intelligence across a distributed learning system. This approach improves the learning algorithm's ability to adapt to diverse user preferences. Functional verification and performance evaluation confirm the proposed architecture's utility across different network sizes, UAV swarms, and content popularity patterns.
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