Query Timing Analysis for Content-Based Wake-Up Realizing Informative IoT Data Collection

Information freshness and high energy-efficiency are key requirements for sensor nodes serving Industrial Internet of Things (IIoT) applications, where a sink node must collect informative data before deadline to control an external element. Pull-based communication is interesting approach optimizing information saving wasteful energy. To this end, we apply Content-based Wake-up (CoWu), in which the can activate subset observing at time that wake-up signal received. In case, timing plays important role: early transmission leads reliability collection, but received may become obsolete by deadline, while later ensures higher timeliness sensed data, some might not manage communicate their deadline. This letter investigates collection using CoWu characterizes gain CoWu. The obtained numerical results show improves accuracy, reducing energy consumption about 75% with respect round-robin scheduling.