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Experimental QoE evaluation of multicast video delivery over IEEE 802.11aa WLANs

Gringoli, Francesco and Serrano, Pablo and Ucar, Iñaki and Facchi, Nicolò and Azcorra, Arturo (2018) Experimental QoE evaluation of multicast video delivery over IEEE 802.11aa WLANs. [Journal Articles] (Accepted for publication)

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Abstract

The IEEE 802.11aa amendment standardised the Group Addressed Transmission Service (GATS), which extends 802.11 WLANs with a novel set of MAC mechanisms to support an effective and efficient multicast video service. The key challenge with GATS is the selection of the best scheme and its configuration for a given network scenario, as the standard does not provide any guidelines nor any assessment of the performance of each mechanism. Although some previous studies have addressed this challenge, their evaluation is either via analysis or simulations under non-realistic assumptions, or based on Quality of Service (QoS) metrics instead of video quality metrics, which are required for a proper video performance assessment. In this paper, we deploy a mid-size real-life testbed and develop a thoughtful methodology to perform an extensive Quality of Experience (QoE) evaluation of GATS under a variety of scenarios. We analyse the performance of the novel schemes under ideal conditions, as well as under controlled and non-controlled interference, assessing their ability to provide an adequate QoE and quantifying the resources left for other type of traffic. Ours is the first thorough QoE evaluation of GATS in a real-life scenario, providing key insights on their performance, and can be used to derive configuration guidelines for the schemes.

Item Type: Journal Articles
Uncontrolled Keywords: WLAN, 802.11aa, GATS, QoE, QoS, Multicast, Video streaming, VMAF.
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Rebeca De Miguel
Date Deposited: 07 Nov 2018 09:38
Last Modified: 07 Nov 2018 09:38
URI: http://eprints.networks.imdea.org/id/eprint/1756

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