Energy-Efficient Temporal Sensing: An Age-of-Sample-Based Approach

In this article, an energy-efficient temporal sensing framework is proposed for a wireless sensor node (SN) monitoring a temporal process. A concept of Age of Sample (AoS) is introduced, and expressions for the AoS and average AoS functions are derived that capture freshness of sensed samples (or intersample time). To incorporate the effect of process variations, weighted AoS (WAoS) and its averag...