QoS Categories Activeness-Aware Adaptive EDCA Algorithm for Dense IoT Networks

Mohammed A. Salem1 , Ibrahim F. Tarrad2 , Mohamed I. Youssef 2 and Sherine M. Abd El-Kader3 

1Department of Electrical Engineering, Higher Technological Institute, 10th of Ramadan City, Egypt 2Department of Electrical Engineering, Al-Azhar University, Cairo, Egypt 3Department of Computer Engineering, Electronics Research Institute, Giza, Egypt 

ABSTRACT

 IEEE 802.11 networks have a great role to play in supporting and deploying of the Internet of Things (IoT). The realization of IoT depends on the ability of the network to handle a massive number of stations and transmissions and to support Quality of Service (QoS). IEEE 802.11 networks enable the QoS by applying the Enhanced Distributed Channel Access (EDCA) with static parameters regardless of existing network capacity or which Access Category (AC) of QoS is already active. Our objective in this paper is to improve the efficiency of the uplink access in 802.11 networks; therefore we proposed an algorithm called QoS Categories Activeness-Aware Adaptive EDCA Algorithm (QCAAAE) which adapts Contention Window (CW) size, and Arbitration Inter-Frame Space Number (AIFSN) values depending on the number of associated Stations (STAs) and considering the presence of each AC. For different traffic scenarios, the simulation results confirm the outperformance of the proposed algorithm in terms of throughput (increased on average 23%) and retransmission attempts rate (decreased on average 47%) considering acceptable delay for sensitive delay services. 

KEYWORDS

 IoT, IEEE 802.11, EDCA, CW, AIFSN, MAC, QoS

Full Text :

Special Issue on: "Cyber Physical Systems"

http://airccse.org/journal/sicfp18.html

Guest Editors:

V.Vijayakumar,
VIT University,
India

V. Neelanarayanan,
VIT University,
India

P. Nithyanandam,
VIT University,
India

Siguang Chen,
Nanjing University of Posts and Telecommunications,
China

Theme and Scope

Cyber-Physical Systems (CPS) are integrations of computation, networking, and physical
processes. The vision of CPS faces some core challenges of multidisciplinary research, as their
relevant technologies appear in diverse areas of science and engineering.

This special issue is intended to cover contributions in both the design and analysis in the field of
Cyber Physical Systems. The special issue will additionally select high quality papers from the
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(ICRTAC-CPS), to be held in VIT Chennai, India, September 2018.

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Authors are solicited to contribute to this Special Issue by submitting articles that illustrate
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automation, automotive and transportation systems, smart healthcare, surveillance
systems, etc
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