Delay-bounded transmission power control for low-duty-cycle sensor networks

Zuzhi Fan, Shi Bai, Shuai Wang, Tian He

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Low-duty-cycle operation has been adopted to alleviate the consumption rate of energy, which is significant for the power scarcity sensor networks. The sleep latency brought by low-duty-cycle mode, however, leads to a dramatic increase of delay, which may not be tolerable for delay-sensitive applications. In this work, we introduce the transmission power control mechanism into low-duty-cycle sensor networks. Particularly, we propose Delay-bounded Transmission Power Control (DTPC), a cross-layer approach, to minimize the energy consumption of sensor nodes while meeting the user-specified delay constraint. In DTPC, each node builds its own transmission table using dynamical programming and then adaptively selects the approximate forwarding entry according to the delay bound. In addition, our design is embedded to support both single-parent and multi-parent data forwarding scheme. The extensive simulations and test-bed experiment results show that DTPC can guarantee the delay bound with much lower energy cost compared with other well-known schemes.

Original languageEnglish (US)
Article number7039219
Pages (from-to)3157-3170
Number of pages14
JournalIEEE Transactions on Wireless Communications
Volume14
Issue number6
DOIs
StatePublished - Jun 1 2015

Keywords

  • Low duty cycle
  • Sleep latency
  • Transmission power control
  • Wireless sensor networks

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