Extending network lifetime for precision-constrained data aggregation in wireless sensor networks

Xueyan Tang*, Jianliang XU

*Corresponding author for this work

Research output: Chapter in book/report/conference proceedingConference contributionpeer-review

129 Citations (Scopus)

Abstract

This paper exploits the tradeoff between data quality and energy consumption to extend the lifetime of wireless sensor networks. We consider the applications that require some aggregate form of sensed data with precision guarantees. Our key idea is to differentiate the precisions of data collected from different sensor nodes to balance their energy consumption. This is achieved by partitioning the precision constraint of data aggregation and allocating error bounds to individual sensor nodes in a coordinated fashion. Three factors affecting the lifetime of sensor nodes are identified: (1) the changing pattern of sensor readings; (2) the residual energy of sensor nodes; and (3) the communication cost between the sensor nodes and the base station. We analyze the optimal precision allocation in terms of network lifetime and propose an adaptive precision allocation scheme that dynamically adjusts the error bounds of sensor nodes. Experimental results using real data traces show that the proposed scheme significantly improves network lifetime compared to existing methods.

Original languageEnglish
Title of host publicationProceedings - INFOCOM 2006
Subtitle of host publication25th IEEE International Conference on Computer Communications
DOIs
Publication statusPublished - 2006
EventINFOCOM 2006: 25th IEEE International Conference on Computer Communications - Barcelona, Spain
Duration: 23 Apr 200629 Apr 2006

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X

Conference

ConferenceINFOCOM 2006: 25th IEEE International Conference on Computer Communications
Country/TerritorySpain
CityBarcelona
Period23/04/0629/04/06

Scopus Subject Areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

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