论文标题
信息年龄：两镜头状态更新系统监视相同的过程
Age of Information: A Two-Sensor Status Update System Monitoring The Same Process
论文作者
论文摘要
这项工作研究了监测系统的信息年龄（AOI），其中两个传感器使用其专用渠道将相同的物理过程感知相同的物理过程并更新为公共监视器。通常，使用冗余设备更新过程的状态可以改善显示器的信息及时性，但是更新的无序到达也使AOI分析具有挑战性。为此，我们将系统建模为两个M/M/1/1并行状态更新队列。通过利用随机混合系统（SHS）的工具，我们提供了一种一般方法来分析平均AOI，而当两个传感器的状态到达速率和/或服务速率相同时，可以获得封闭式表达式。数值结果验证了理论分析的正确性。
This work studies the average age of information (AoI) of a monitoring system in which two sensors are sensing the same physical process and update status to a common monitor using their dedicated channels. Generally, using redundant devices to update the status of a process can improve the information timeliness at the monitor, but the disordered arrivals of updates also make the AoI analysis challenging. To that end, we model the system as two M/M/1/1 parallel status updating queues. By leveraging tools from stochastic hybrid system (SHS), we provide a general approach to analyze the average AoI, whereas a closed-form expression can be obtained when the status arrival rates and/or the service rates are the same for the two sensors. Numerical results validate the correctness of the theoretical analysis.
