Query Timing Analysis for Content-Based Wake-Up Realizing Informative IoT Data Collection
Query Timing Analysis for Content-Based Wake-Up Realizing Informative IoT Data Collection
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DOI：
10.1109/lwc.2022.3225333
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发表时间：
2023-02-01
影响因子：
6.3
通讯作者：
Yomo, Hiroyuki
中科院分区：
文献类型：
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作者：
Shiraishi, Junya;Kalor, Anders E. E.;Yomo, Hiroyuki
信息新鲜度和高能效是服务于工业物联网 (IIoT) 应用的传感器节点的关键要求，其中汇聚节点必须在控制外部元件的截止日期之前收集信息数据。基于拉动的通信是一种优化信息新鲜度和节省浪费能源的有趣方法。为此，我们应用基于内容的唤醒（CoWu），其中接收器可以在接收到唤醒信号时激活观察信息数据的节点子集。在这种情况下，唤醒信号的定时起着重要作用：早期传输导致数据收集的高可靠性，但接收到的数据可能会在截止日期前变得过时，而较晚的传输可确保感测数据的更高及时性，但某些节点可能无法在截止日期之前传达其数据。这封信调查了使用 CoWu 收集数据的时间并描述了 CoWu 的增益。获得的数值结果表明，CoWu 相对于循环调度提高了精度，同时降低了约 75% 的能耗。
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 a deadline to control an external element. Pull-based communication is an interesting approach for optimizing information freshness and saving wasteful energy. To this end, we apply Content-based Wake-up (CoWu), in which the sink can activate a subset of nodes observing informative data at the time that wake-up signal is received. In this case, the timing of the wake-up signal plays an important role: early transmission leads to high reliability in data collection, but the received data may become obsolete by the deadline, while later transmission ensures a higher timeliness of the sensed data, but some nodes might not manage to communicate their data before the deadline. This letter investigates the timing for data collection using CoWu and characterizes the gain of CoWu. The obtained numerical results show that CoWu improves accuracy, while reducing energy consumption by about 75% with respect to round-robin scheduling.