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Source models for speech traffic revisited

Authors:

Andreas Binzenhöfer,

Stefan MühleckAuthors Info & Claims

IEEE/ACM Transactions on Networking (TON), Volume 17, Issue 4

Pages 1042 - 1051

https://doi.org/10.1109/TNET.2008.2006222

Published: 01 August 2009 Publication History

Abstract

In this paper, we analyze packet traces of widely used voice codecs and present analytical source models which describe their output by stochastic processes. Both the G.711 and the G.729.1 codec yield periodic packet streams with a fixed packet size, the G.723.1 as well as the iLBC codec use silence detection leading to an on/off process, and the GSM AMR and the iSAC codec produce periodic packet streams with variable packet sizes. We apply all codecs to a large set of typical speech samples and analyze the output of the codecs statistically. Based on these evaluations we provide quantitative models using standard and modified on/off processes as well as memory Markov chains. Our models are simple and easy to use. They are in good accordance with the original traces as they capture not only the complementary cumulative distribution function (CCDF) of the on/off phase durations and the packet sizes, but also the autocorrelation function (ACF) of consecutive packet sizes as well as the queueing properties of the original traces. In contrast, voice traffic models used in most of today's simulations or analytical studies fail to reproduce the ACF and the queueing properties of original traces. This possibly leads to underestimation of performance measures like the waiting time or loss probabilities. The models proposed in this paper do not suffer from this shortcoming and present an attractive alternative for use in future performance studies.

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Cited By

Mattos CRibeiro EFernandez EPedroso C(2014)An unified VoIP model for workload generationMultimedia Tools and Applications10.5555/2633215.263324970:3(2309-2329)Online publication date: 1-Jun-2014
https://dl.acm.org/doi/10.5555/2633215.2633249
Lehrieder FMenth M(2014)RCFTJournal of Network and Systems Management10.1007/s10922-013-9264-622:1(121-146)Online publication date: 1-Jan-2014
https://dl.acm.org/doi/10.1007/s10922-013-9264-6
Wayer SReichman A(2012)Resource management in satellite communication systemsJournal of Electrical and Computer Engineering10.1155/2012/1690262012(2-2)Online publication date: 1-Jan-2012
https://dl.acm.org/doi/10.1155/2012/169026
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Source models for speech traffic revisited

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Information & Contributors

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Published In

cover image IEEE/ACM Transactions on Networking

IEEE/ACM Transactions on Networking Volume 17, Issue 4

August 2009

337 pages

ISSN:1063-6692

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Publisher

IEEE Press

Publication History

Published: 01 August 2009

Revised: 09 June 2008

Received: 23 November 2007

Published in TON Volume 17, Issue 4

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Cited By

Mattos CRibeiro EFernandez EPedroso C(2014)An unified VoIP model for workload generationMultimedia Tools and Applications10.5555/2633215.263324970:3(2309-2329)Online publication date: 1-Jun-2014
https://dl.acm.org/doi/10.5555/2633215.2633249
Lehrieder FMenth M(2014)RCFTJournal of Network and Systems Management10.1007/s10922-013-9264-622:1(121-146)Online publication date: 1-Jan-2014
https://dl.acm.org/doi/10.1007/s10922-013-9264-6
Wayer SReichman A(2012)Resource management in satellite communication systemsJournal of Electrical and Computer Engineering10.1155/2012/1690262012(2-2)Online publication date: 1-Jan-2012
https://dl.acm.org/doi/10.1155/2012/169026
Menth MLehrieder F(2012)Performance of PCN-based admission control under challenging conditionsIEEE/ACM Transactions on Networking10.1109/TNET.2012.218941520:2(422-435)Online publication date: 1-Apr-2012
https://dl.acm.org/doi/10.1109/TNET.2012.2189415
Menth MMuehleck S(2010)Packet waiting time for multiplexed periodic on/off streams in the presence of overbookingInternational Journal of Communication Networks and Distributed Systems10.1504/IJCNDS.2010.0311874:2(207-229)Online publication date: 1-Jan-2010
https://dl.acm.org/doi/10.1504/IJCNDS.2010.031187

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