<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The increasing use of multimedia applications in wireless ad-hoc networks makes the support of quality of service (QoS) an overriding necessity. In this article, we present a new extension of the IEEE 802.11e EDCA scheme called NCA-EDCA, which uses the lifetime and the number of retransmissions attempts of a packet to assess the aggressiveness of the environment in order to adjust the channel access parameters to work in the best possible way and improve service quality accordingly. This new extension aims to (1) improve the performance of real-time applications; (2) increase the overall throughput by reducing the collision rate and (3) achieve an acceptable level of fairness. The simulation results show that our extension significantly improves EDCA for better QoS support of multimedia applications. More specifically, it increases throughput of the different flows by no negligible factors and significantly reduces the collision rate while maintaining a high degree of fairness between flows of equal priority.</p>
</abstract>

The increasing use of multimedia applications in wireless ad-hoc networks makes the support of quality of service (QoS) an overriding necessity. In this article, we present a new extension of the IEEE 802.11e EDCA scheme called NCA-EDCA, which uses the lifetime and the number of retransmissions attempts of a packet to assess the aggressiveness of the environment in order to adjust the channel access parameters to work in the best possible way and improve service quality accordingly. This new extension aims to (1) improve the performance of real-time applications; (2) increase the overall throughput by reducing the collision rate and (3) achieve an acceptable level of fairness. The simulation results show that our extension significantly improves EDCA for better QoS support of multimedia applications. More specifically, it increases throughput of the different flows by no negligible factors and significantly reduces the collision rate while maintaining a high degree of fairness between flows of equal priority.

Network Condition-Aware Enhanced Distributed Channel Access for IEEE 802.11e Wireless Ad-Hoc Networks

Research Laboratory in Industrial Computing and Networks (RiiR)

Applied Computer Systems

This work is licensed under the Creative Commons Attribution 4.0 International License.

The increasing use of multimedia applications in wireless ad-hoc networks makes the support of quality of service (QoS) an overriding necessity. In this...

Network Condition-Aware Enhanced Distributed Channel Access for IEEE 802.11e Wireless Ad-Hoc Networks

Published Online: Jan 24, 2023

Page range: 190 - 197

DOI: https://doi.org/10.2478/acss-2022-0020

Keywords
802.11 MAC, ad-hoc wireless networks, EDCA, IEEE 802.11e, QoS, multimedia traffic

© 2022 Soulimane Mammar et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Network Condition-Aware Enhanced Distributed Channel Access for IEEE 802.11e Wireless Ad-Hoc Networks

Published Online: Jan 24, 2023

Page range: 190 - 197

DOI: https://doi.org/10.2478/acss-2022-0020

Keywords802.11 MAC, ad-hoc wireless networks, EDCA, IEEE 802.11e, QoS, multimedia traffic

© 2022 Soulimane Mammar et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
802.11 MAC, ad-hoc wireless networks, EDCA, IEEE 802.11e, QoS, multimedia traffic