A quality of service distributed optimizer for Cognitive Radio Sensor Networks

Salem, Tarek M.; Abdel-Mageid, Salah; El-Kader, Sherine M. Abd; Zaki, Mohamed H.

doi:10.1016/j.pmcj.2015.06.002

Cited by 11 publications

(1 citation statement)

References 38 publications

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“…This mechanism provides four Access Categories (ACs): Voice (VO), Video (VI), Best Effort (BE), and Background (BK). The differentiation between ACs is provided by configuring different EDCA parameters [6], i.e. different Arbitration Inter-Frame Space Number (AIFSN) values and different Contention Window (CW) sizes for each AC; lower AIFSN and CW assigned for higher priority AC.…”

Section: Introductionmentioning

confidence: 99%

Qos Categories Activeness-Aware Adaptive Edca Algorithm for Dense Iot Networks

Salem¹,

Tarrad²,

Youssef³

et al. 2019

IJCNC

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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.

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Section: Introductionmentioning

confidence: 99%