A distributed, energy-aware, utility-based approach for data transport in wireless sensor networks

Wei Peng Chen, Jennifer C. Hou, Lui Sha, Marco Caccamo

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

Abstract

Distinct from wireless ad hoc networks, wireless sensor networks are data-centric, application-oriented, collaborative, and energy-constrained in nature. In this paper, we formulate the problem of data transport in sensor networks as an optimization problem, with the objective of maximizing the amount of information (utility) collected at sinks, subject to both the channel band-width and energy constraints. We then devise a distributed solution of the convex optimization problem, and explore in three directions. First, we devise a simple node capacity estimation method to online measure the node capacity. Second, we linearize the energy constraint by properly setting the value of the system lifetime in advance and controlling the data rate of a node so as to sustain its battery lifetime longer than the specified lifetime. Finally, we incorporate the optimization results into routing so as to provide sensors with opportunities to select better routes. The simulation results show that the utility-based approach balances between system utility and system lifetime.

Original languageEnglish (US)
Title of host publicationMILCOM 2005
Subtitle of host publicationMilitary Communications Conference 2005
DOIs
StatePublished - 2005
EventMILCOM 2005: Military Communications Conference 2005 - Atlatnic City, NJ, United States
Duration: Oct 17 2005Oct 20 2005

Publication series

NameProceedings - IEEE Military Communications Conference MILCOM
Volume2005

Other

OtherMILCOM 2005: Military Communications Conference 2005
CountryUnited States
CityAtlatnic City, NJ
Period10/17/0510/20/05

Keywords

  • Mathematical programming/optimization
  • Pricing
  • Simulations
  • System design
  • Utility-based
  • Wireless sensor networks

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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