Optimization of multilevel power adjustment in wireless sensor networks

Sheng-Tzong Cheng, Mingzoo Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Restricted to the limited battery power of nodes, energy conservation becomes a critical design issue in wireless sensor networks (WSNs). Transmission with excess power not only reduces the lifetime of sensor nodes, but also introduces immoderate interference in the shared radio channel. It is ideal to transmit packets with just enough power. In this paper, we propose a multilevel power adjustment (MLPA) mechanism for WSNs to prolong the individual node lifetime and the overall network lifetime. The energy conservation is achieved by reducing the average transmission power. The analytical model is built for the MLPA mechanism enabled with k distinct power levels (k-LPA). Under a free space loss (FSL) model, the closed-form expression of optimal power setting is derived and the average transmission power can be minimized as (k + 1)/2k of original fixed power.

Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationDMS 2008 - 14th International Conference on Distributed Multimedia Systems
PublisherKnowledge Systems Institute Graduate School
Pages106-111
Number of pages6
ISBN (Electronic)1891706233
Publication statusPublished - 2008 Jan 1
Event14th International Conference on Distributed Multimedia Systems, DMS 2008 - Boston, United States
Duration: 2008 Sep 42008 Sep 6

Publication series

NameProceedings: DMS 2008 - 14th International Conference on Distributed Multimedia Systems

Other

Other14th International Conference on Distributed Multimedia Systems, DMS 2008
CountryUnited States
CityBoston
Period08-09-0408-09-06

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Graphics and Computer-Aided Design
  • Human-Computer Interaction

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