The design of a ultra-low power RF wakeup sensor for wireless sensor networks

Sang Hoon Lee, Yong Soo Bae, Lynn Choi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In wireless sensor networks (WSNs) duty cycling has been an imperative choice to reduce idle listening but it introduces sleep delay Thus, the conventional WSN medium access control protocols are bound by the energy-latency tradeoff. To break through the tradeoff, we propose a radio wave sensor called radio frequency (RF) wakeup sensor that is dedicated to sense the presence of a RF signal. The distinctive feature of our design is that the RF wakeup sensor can provide the same sensitivity but with two orders of magnitude less energy than the underlying RF module. With RF wakeup sensor a sensor node no longer requires duty cycling. Instead, it can maintain a sleep state until its RF wakeup sensor detects a communication signal. According to our analysis, the response time of the RF wakeup sensor is much shorter than the minimum transmission time of a typical communication module. Therefore, we apply duty cycling to the RF wakeup sensor to further reduce the energy consumption without performance degradation. We evaluate the circuital characteristics of our RF wakeup sensor design by using Advanced Design System 2009 simulator. The results show that RF wakeup sensor allows a sensor node to completely turn off their communication module by performing the around-the-clock carrier sensing while it consumes only 0.07% energy of an idle communication module.

Original languageEnglish
Article number7487977
Pages (from-to)201-209
Number of pages9
JournalJournal of Communications and Networks
Volume18
Issue number2
DOIs
Publication statusPublished - 2016 Apr 1

Fingerprint

Wireless sensor networks
Sensors
Communication
Sensor nodes
Radio waves
Medium access control
Clocks
Energy utilization
Simulators
Network protocols
Degradation

Keywords

  • Idle listening
  • radio frequency (RF) wave sensor
  • sleep delay
  • wireless communication
  • wireless sensor networks (WSN)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems

Cite this

The design of a ultra-low power RF wakeup sensor for wireless sensor networks. / Lee, Sang Hoon; Bae, Yong Soo; Choi, Lynn.

In: Journal of Communications and Networks, Vol. 18, No. 2, 7487977, 01.04.2016, p. 201-209.

Research output: Contribution to journalArticle

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