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  4. Bound-based power optimization for multi-hop heterogeneous wireless industrial networks under statistical delay constraints
 
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2019
Journal Article
Title

Bound-based power optimization for multi-hop heterogeneous wireless industrial networks under statistical delay constraints

Abstract
The noticeably increased deployment of wireless networks for battery-limited industrial applications in recent years highlights the need for tractable performance analysis methodologies as well as efficient QoS-aware transmit power management schemes. In this work, we seek to combine several important aspects of such networks, i.e., multi-hop connectivity, channel heterogeneity and the queuing effect, in order to address these needs. We design delay-bound-based algorithms for transmit power minimization and network lifetime maximization of multi-hop heterogeneous wireless networks using our previously developed stochastic network calculus approach for performance analysis of a cascade of buffered wireless fading channels. Our analysis shows an overall transmit power saving of up to 95% compared to a fixed power allocation scheme in case when the service is modeled via a Shannon capacity. For a more realistic set-up, we evaluate the performance of the suggested algorithm in a WirelessHART network, which is a widely used communication standard for industrial process automation applications. We find that link heterogeneity can significantly reduce network lifetime when no efficient power management is applied. Using extensive simulation study we further show that the proposed bound-based power allocation performs reasonably well compared to the real optimum, especially in the case of WirelessHART networks.
Author(s)
Petreska, Neda
Fraunhofer-Institut für Eingebettete Systeme und Kommunikationstechnik ESK  
Al-Zubaidy, Hussein
KTH Royal Institute of Technology, Stockholm
Knorr, Rudi
Fraunhofer-Institut für Eingebettete Systeme und Kommunikationstechnik ESK  
Gross, James
KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Stockholm
Journal
Computer Networks  
Open Access
DOI
10.1016/j.comnet.2018.09.009
Additional full text version
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Language
English
ESK  
Keyword(s)
  • stochastic network calculus

  • wireless sensor network

  • multi-hop

  • heterogeneous network

  • end-to-end delay bound

  • power minimization

  • industrial networks

  • WirelessHart

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