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

Research output: Contribution to journalLetterpeer-review

4 Citations (Scopus)
34 Downloads (Pure)

Abstract

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.

Original languageEnglish
JournalIEEE Wireless Communications Letters
Volume12
Issue number2
Pages (from-to)327-331
Number of pages5
ISSN2162-2337
DOIs
Publication statusPublished - Feb 2023

Bibliographical note

Publisher Copyright:
IEEE

Keywords

  • Query Age of Information
  • Wireless sensor networks
  • content-based wake-up
  • wake-up radio
  • query age of information

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