Real-time VoIP quality measurement for mobile devices

Whai En Chen*, Pin Jen Lin, Yi-Bing Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The quality of voice over Internet protocol (VoIP) is typically measured by mean opinion score (MOS) that significantly varies in wireless environments. Several approaches have been proposed to evaluate the MOS values of voice paths. However, these solutions require extra servers/gateways to conduct heavy computation for MOS measurement of VoIP calls. We propose two MOS measurement procedures for mobile devices. In our approach, a simple program is installed in each of the mobile devices (through an app-store like mechanism). In the perceptual evaluation of speech quality (PESQ) MOS measurement procedure, a lightweight real-time table lookup solution significantly reduces the computation time of PESQ MOS measurement from 315.4 s to 3 s. In the E-model MOS measurement procedure, the E-model MOS value can be accurately computed in 5.35 s.

Original languageEnglish
Article number6026220
Pages (from-to)538-544
Number of pages7
JournalIEEE Systems Journal
Volume5
Issue number4
DOIs
StatePublished - Dec 2011

Keywords

  • All-IP
  • E-model
  • mean opinion score (MOS)
  • perceptual evaluation of speech quality (PESQ)
  • session initiation protocol (SIP)
  • voice over Internet protocol (VoIP)

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