论文标题
wifresh：从理论到实施的信息年龄
WiFresh: Age-of-Information from Theory to Implementation
论文作者
论文摘要
智能工厂和无人机舰队等新兴应用程序越来越依靠共享时间敏感的信息来监视和控制。在这样的应用领域，必须保持信息新鲜，因为过时的信息会失去其价值，并可能导致系统故障和安全风险。信息年龄是一个性能指标，它从目的地的角度捕获了信息的新鲜程度。 在本文中，我们表明，随着无线网络中的拥堵的增加，信息的年龄急剧下降，导致目的地过时的信息。利用多年的理论研究，我们提出了Wifresh：一种非常规架构，即使网络被超载，它在任何规模的无线网络中都几乎获得了最佳信息。我们的实验结果表明，与等效标准WiFi网络相比，WiFresh可以将信息新鲜度提高两个数量级。我们建议并实现两种实现WiFresh的策略：一个使用硬件级编程在MAC层，使用Python在应用程序层的另一个策略。
Emerging applications, such as smart factories and fleets of drones, increasingly rely on sharing time-sensitive information for monitoring and control. In such application domains, it is essential to keep information fresh, as outdated information loses its value and can lead to system failures and safety risks. The Age-of-Information is a performance metric that captures how fresh the information is from the perspective of the destination. In this paper, we show that as the congestion in the wireless network increases, the Age-of-Information degrades sharply, leading to outdated information at the destination. Leveraging years of theoretical research, we propose WiFresh: an unconventional architecture that achieves near optimal information freshness in wireless networks of any size, even when the network is overloaded. Our experimental results show that WiFresh can improve information freshness by two orders of magnitude when compared to an equivalent standard WiFi network. We propose and realize two strategies for implementing WiFresh: one at the MAC layer using hardware-level programming and another at the Application layer using Python.
