VoIP applications are being widely used in today's networks challenging their capabilities to provide a good quality of experience level to the users. In particular, new wireless broadband technologies, such as WiMAX, are being deployed and need to be evaluated to check the performance levels of VoIP services. The work presented in this paper is a unique contribution assessing the VoIP sessions quality on a real WiMAX test-bed, using UDP/RTP and DCCP transport protocols. VoIP quality is measured according the quality perceived by the end users as well as through conventional network parameters, such as one-way delay and packet loss. The results put in evidence a good quality for VoIP services with 60 simultaneous users in a WiMAX link with resources pre-provisioned. Moreover, in the scenarios tested, DCCP has not shown enhanced performance when compared with UDP/RTP, despite the congestion control mechanisms natively supported
Keywords
WiMAX, VoIP, DCCP, Quality of Experience, Quality of Service, QoE, QoS, testbed
Conference
IEEE 4th Workshop on multiMedia Applications over Wireless Networks (MediaWiN 2009), July 2009
PDF File
DOI
Cited by
Year 2013 : 2 citations
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Year 2012 : 2 citations
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Year 2011 : 4 citations
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(Advisor: Lisandro Zambenedetti Granville; Coadvisor: Juergen Rochol)
Year 2010 : 3 citations
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