A DSP-based approach to congestion control for multihop ad hoc WLANs with BoD access

R. Shafik, S. Weiss, E. Rogers

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


In this paper, a {DSP}-based solution has been proposed from control-theoretic paradigm to control the congestion of a multihop ad hoc wireless {LAN} with bandwidth-on-demand access. {T}he design of the proposed system has been derived from the reference and error controller model, which essentially controls the queue length against a reference queue length based on the congestion that the system has to combat against. {T}his is done by regulating the desired input rate and required output rate such that the system is asymptotically stable in terms of all possible congestion scenarios. {T}he {S}mith predictor has been used in the closed-loop error controller to compensate for delays that could cause instability. {U}nderpinning the control paradigm, a filter based solution is proposed with an aim to ensure full-link utilization and to achieve maximum rate recovery as soon as the congestion has been cleared under system stability. {S}imulations illustrate the system performance of the filter-based controller in a simple {WLAN} model. {F}inally, a brief comparative study has been made with some of the recently proposed models that perform similar control tasks.
Original languageEnglish
Title of host publicationThe 2nd IEE/EURASIP Conference on DSP Enabled Radio 2005
Place of PublicationNew York
Number of pages11
ISBN (Print)0863415601
Publication statusPublished - Sept 2005
Event2nd IEE/EURASIP Conference on DSP Enabled Radio - Southampton, United Kingdom
Duration: 19 Sept 200520 Sept 2005


Conference2nd IEE/EURASIP Conference on DSP Enabled Radio
Country/TerritoryUnited Kingdom


  • ad hoc networks
  • wireless LAN
  • telecommunication congestion control
  • closed loop systems
  • asymptotic stability
  • dsp-based
  • congestion control
  • multihop
  • wlans
  • bod access


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