An efficient cooperative MAC protocol for enhancing QoS of IEEE 802.11e EDCA in saturated conditions

Jaya Roy, Abubakar Siddik, Shafika Showkat Moni, Mohammad Shah Alam

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

3 Scopus citations

Abstract

Differentiating channel access probability based on only traffic priority can ensure QoS statistically in enhanced distributed channel access (EDCA) of IEEE 802.11e. However, it may seriously affect the overall performance in presence of degraded channel condition among distant stations. In this paper, we propose a novel channel access scheme which exploits the benefit of cooperative communication in order to mitigate the adverse effect of bad channel condition while maintaining deterministically prioritized channel access for high priority traffic. Unlike EDCA, in our proposed scheme whenever a station with degraded channel condition wins the channel contention, our scheme searches for a prospective helper node to assist the sender in transmission. Eventually by exchanging sequence of busy tones and a special frame, it selects an optimal helper which has data with equal or higher priority as well as supports significantly higher data rate for cooperative transmission. Simulation results demonstrate that our proposed protocol enhances the QoS of the network while improving the overall performance of EDCA.

Original languageEnglish
Title of host publicationProceedings of 9th International Conference on Electrical and Computer Engineering, ICECE 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages578-581
Number of pages4
ISBN (Electronic)9781509029631
DOIs
StatePublished - 13 Feb 2017
Event9th International Conference on Electrical and Computer Engineering, ICECE 2016 - Dhaka, Bangladesh
Duration: 20 Dec 201622 Dec 2016

Publication series

NameProceedings of 9th International Conference on Electrical and Computer Engineering, ICECE 2016

Conference

Conference9th International Conference on Electrical and Computer Engineering, ICECE 2016
Country/TerritoryBangladesh
CityDhaka
Period20/12/1622/12/16

Keywords

  • Cooperative communication
  • EDCA
  • IEEE802.11e
  • Quality of service

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