Making WiFi work in multi-hop topologies: Automatic negotiation and allocation of airtime

Domenico Garlisi, Fabrizio Giuliano, Alice Lo Valvo, Jonathan Lutz, Violet Syrotiuk, Ilenia Tinnirello

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

2 Scopus citations

Abstract

We propose a solution for mitigating the performance impairments of CSMA/CA protocols in multi-hop topologies based on the dynamic adaptation of the contention process experienced by nodes in a wireless network. A distributed protocol is used to negotiate the channel airtime for a node as a function of the traffic requirements of its neighbourhood, taking into account bandwidth reserved for the control operations. A mechanism is provided for a node to tune its contention window depending on its allocated airtime. Different from previous schemes, a node's contention window is fixed in size unless the traffic requirements of its neighbourhood change. The scheme is implemented on legacy commercial 802.11 devices. Extensive experimental results, performed on the CREW European testbed, demonstrate the effectiveness of the approach.

Original languageEnglish (US)
Title of host publicationProceedings - 2015 IEEE 35th International Conference on Distributed Computing Systems Workshops, ICDCSW 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages48-55
Number of pages8
ISBN (Electronic)9781467373036
DOIs
StatePublished - Jul 22 2015
Event2015 35th IEEE International Conference on Distributed Computing Systems Workshops, ICDCSW 2015 - Columbus, United States
Duration: Jun 29 2015Jul 2 2015

Publication series

NameProceedings - 2015 IEEE 35th International Conference on Distributed Computing Systems Workshops, ICDCSW 2015

Other

Other2015 35th IEEE International Conference on Distributed Computing Systems Workshops, ICDCSW 2015
Country/TerritoryUnited States
CityColumbus
Period6/29/157/2/15

Keywords

  • Multi-hop WIFI
  • Negotiation protocol
  • Testbeds

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering

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