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Trends in Applied Sciences Research
  Year: 2014 | Volume: 9 | Issue: 6 | Page No.: 275-289
DOI: 10.3923/tasr.2014.275.289
 
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A Novel Adaptive Contention Window Scheme for IEEE 802.11 MAC Protocol
Mohammad Saraireh, Ja`afer AL-Saraireh and Saleh Saraireh

Abstract:
In this study, a novel approach is proposed. This approach is employed to improve the Quality of Service (QoS) for IEEE 802.11 MAC protocol, by adjustment of the Contention Window (CW) dynamically. The CW adjustment is based on Collision Rate (CR) and Collision Rate Variation (CRV). The proposed scheme classifies the application type into a high priority and a low priority traffic. This classification is used for providing QoS in single-hop wireless networks. By using the proposed approach, the average QoS for the high priority traffic is improved by 18.3 and 22.6% for the 5 and 10 connections, respectively. While the average QoS for the low priority traffic is improved by 11.6% and 17.8 for the 5 and 10 connections, respectively. The simulations results show that, the proposed method improves QoS in wireless network. Also, the proposed technique can be implemented without major modifications to the original IEEE 802.11 standard.
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How to cite this article:

Mohammad Saraireh, Ja`afer AL-Saraireh and Saleh Saraireh, 2014. A Novel Adaptive Contention Window Scheme for IEEE 802.11 MAC Protocol. Trends in Applied Sciences Research, 9: 275-289.

DOI: 10.3923/tasr.2014.275.289

URL: https://scialert.net/abstract/?doi=tasr.2014.275.289

 
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