Experimental evaluation of WebRTC voice quality in LTE coverage tests

Najmeddine Majed 1, 2, 3 Stéphane Ragot 3 Xavier Lagrange 1, 2 Alberto Blanc 1, 2 Jérôme Dufour 3 Guillaume Grao 3
1 ADOPNET - Advanced technologies for operated networks
UR1 - Université de Rennes 1, IMT Atlantique - IMT Atlantique Bretagne-Pays de la Loire, IRISA-D2 - RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES
Abstract : In this paper, we present experimental results on WebRTC voice quality as a function of LTE radio coverage. Different LTE radio conditions were tested by varying the radio path loss (with fast fading) in controlled test lab conditions. Voice quality was evaluated at different speech coding bit rates in terms of POLQA score and mouth-to-ear delay. Results show that, with acknowledged mode data transmission over LTE, degrading radio 8 coverage translated mainly into increasing end-to-end delay and 9 jitter, with virtually no packet loss up to the coverage limit. Voice 10 quality is analyzed by studying the influence of the specific jitter 11 buffer used in WebRTC endpoints.
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Submitted on : Wednesday, August 16, 2017 - 3:13:13 PM
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Najmeddine Majed, Stéphane Ragot, Xavier Lagrange, Alberto Blanc, Jérôme Dufour, et al.. Experimental evaluation of WebRTC voice quality in LTE coverage tests. QoMEX 2017 : 9th International Conference on Quality of Multimedia Experience , May 2017, Erfurt, Germany. pp.1 - 6, ⟨10.1109/QoMEX.2017.7965649⟩. ⟨hal-01574796⟩



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