A modified bumpless transfer technique for seamless handoff in mobile ad-hoc 802.15.4 wireless sensor networks

M. Walsh, S. M.M. Alavi, M. Hayes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper a modified anti-windup-bumpless-transfer (AWBT) power control technique is proposed, to enable seamless handoff in mobile ad-hoc wireless sensor networks, that are subject to hardware limitations. The approach adopts an intuitively appealing two step design procedure where firstly a linear controller is designed ignoring the inherent nonlinearities in the system. Quantitive feedback theory is used in this regard and provides pre-specified levels of robust stability and performance. In the second stage of the design process an AWBT controller is designed to account for hardware saturation constraints. This scheme is subsequently modified to account for feedback discrepancies due to a varying propagation environment, ensuring smooth handoff in the network. The proposed method is extensively tested on a fully compliant 802.15.4 wireless sensor testbed.

Original languageEnglish
Title of host publicationIET Irish Signals and Systems Conference, ISSC 2008
Pages268-273
Number of pages6
Edition539 CP
DOIs
Publication statusPublished - 2008
EventIET Irish Signals and Systems Conference, ISSC 2008 - Galway, Ireland
Duration: 18 Jun 200819 Jun 2008

Publication series

NameIET Conference Publications
Number539 CP

Conference

ConferenceIET Irish Signals and Systems Conference, ISSC 2008
Country/TerritoryIreland
CityGalway
Period18/06/0819/06/08

Keywords

  • Anti-windup
  • Bumpless-transfer
  • Mobile ad-hoc wireless sensor network

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