TITLE:
Adaptive Distributed Inter Frame Space for IEEE 802.11 MAC Protocol
AUTHORS:
Ja’afer AL-Saraireh, Saleh Saraireh, Mohammad Saraireh, Mohammed Bani Younis
KEYWORDS:
DCF, Collision Rate, Packet Loss, Average Delay, ADIFS
JOURNAL NAME:
Communications and Network,
Vol.6 No.3,
August
14,
2014
ABSTRACT: In this research, an
Adaptive Distributed Inter Frame Space (ADIFS)
has been proposed for IEEE 802.11 Medium Access Control (MAC) protocol. The aim
of this approach is to improve Quality of Services (QoS) for IEEE 802.11 MAC
protocol in single-hop wireless network. The proposed approach is based on
traffic type, Collision Rate (CR),
Collision Rate Variation (CRV) and
Packet Loss Rate. These parameters are used to adjust the DIFS at runtime. The
adjusted DIFS is employed to enhance service differentiation at the MAC layer in
single-hop wireless networks. The proposed approach contributes to the
enhancement of the average QoS for high priority traffic by 32.9% and 33.4% for
the 5 and 10 connections, respectively. While the average QoS for the low
priority traffic is improved by 14.3% and 18.2% for the 5 and 10 connections,
respectively. The results indicate that, the proposed approach contributes in
the enhancement of the QoS in wireless network.