论文标题
时间触发和事件触发系统的年龄和信息偏差
Age- and Deviation-of-Information of Time-Triggered and Event-Triggered Systems
论文作者
论文摘要
信息年龄是一种量化通过采样遥控传感器获得的信息新鲜度的度量。在信号无关采样中，在某些时间触发传感器更新，而不会在实际传感器信号上进行调节。最佳更新策略已经进行了研究，并且接受定期更新比随机更新更小的信息年龄更小。我们对信号感知策略进行了研究，其中更新是由随机传感器事件触发的。从定义上讲，这意味着随机更新，因此信息年龄较低。但是，将信息偏差的概念视为信号感知度量的指标，我们的结果表明，事件触发的系统可以和时间触发的系统相同，同时导致较小的平均网络利用率。
Age-of-information is a metric that quantifies the freshness of information obtained by sampling a remote sensor. In signal-agnostic sampling, sensor updates are triggered at certain times without being conditioned on the actual sensor signal. Optimal update policies have been researched and it is accepted that periodic updates achieve smaller age-of-information than random updates. We contribute a study of a signal-aware policy, where updates are triggered by a random sensor event. By definition, this implies random updates and as a consequence inferior age-of-information. Considering a notion of deviation-of-information as a signal-aware metric, our results show, however, that event-triggered systems can perform equally well as time-triggered systems while causing smaller mean network utilization.
