β-Adaptive Playout Scheme for Voice over IP Applications

Younchan JUNG
J. William ATWOOD

Publication
IEICE TRANSACTIONS on Communications   Vol.E88-B    No.5    pp.2189-2192
Publication Date: 2005/05/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.5.2189
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Internet
Keyword: 
Internet phone applications,  β-adaptive playout,  lateness loss rates,  buffering delay,  jitter,  

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Summary: 
The playout delay for voice over IP applications is adjusted on every talkspurt. The parameter β that controls the delay/packet loss ratio is usually fixed, based on high jitter conditions. In this letter, a β-adaptive playout algorithm is presented, where the β is adjusted. The buffering delays and lateness rates are compared against the existing algorithm with the fixed β. We show that the β-adaptive system improves the lateness loss performance, especially for low jitter conditions, while maintaining almost identical buffering delay/lateness loss performance when jitter is high.