Analysis of optimal jitter buffer size for VoIP QoS underWiMAX power-saving mode

Hyungsuk Kim, Taehyoun Kim

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

VoIP service is expected as one of the key applications of Mobile WiMAX, but the speech quality of VoIP service often suffers deterioration due to the fluctuating transmission delay called jitter. This is commonly ameliorated by a de-jitter buffer, and we aim to find the optimal size of de-jitter buffer to achieve speech quality comparable to PSTN. We developed a new model of the packet drops at the de-jitter buffer and the end-to-end packet delay which takes account of the additional delay introduced by the WiMAX power-saving mode. Using our model, we analyzed the optimal size of the de-jitter buffer for various network parameters, and showed that the results obtained by analysis accord with simulation results.

Original languageEnglish
Pages (from-to)1395-1402
Number of pages8
JournalIEICE Transactions on Communications
VolumeE93-B
Issue number6
DOIs
StatePublished - Jun 2010

Keywords

  • De-jitter buffer
  • Power-saving mode (PSM)
  • QoS
  • VoIP
  • WiMAX

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