Methods for Mitigating IP Network Packet Loss in Realtime Audio Streaming Applications

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE Mot. Imag. J
Volume: 123, No. 5, pp. 28–34
Abstract: Increasingly Internet protocol (IP)-based networks are being used for transport of realtime broadcast quality audio. IP networks provide clear benefits of cost and flexibility over circuit-switched networks. However, IP networks can have impairments that must be mitigated in order to realize the quality of service that broadcasters are accustomed to with circuit-switched networks. Among these impairments, packet loss poses the toughest challenge. In many non-realtime applications, transport protocols such as transmission control protocol (TCP) or reliable user datagram protocol (UDP) can be used to retransmit lost packets. However, for realtime media streaming applications that are delay-sensitive and where multicasting is used, such protocols cannot be used. Therefore, techniques used for packet loss mitigation have to minimize delay and work in unidirectional network paths. The challenge faced as we encounter different packet loss patterns in real networks is that the effectiveness of the mitigation techniques depends upon the model these packet losses follow. This paper first shows how packet losses in real networks can be modeled. The results of the effectiveness of different mitigation techniques are then shown, using these models and how they can be cascaded to provide for a scalable method to mitigate varying levels of packet loss.
Publication Date: 2014-07-01
DOI: 10.5594/j18430
ISSN: Print: 1545-0279
Link: https://doi.org/10.5594/j18430
Author(s): Keyur Parikh
bio
Keyur Parikh is an architect and software lead with GatesAir in Mason, OH. Parikh has more than 22 years of experience in the design and development of communication systems for various applications. His current interests include architecture and design of systems to reliably transport media over packet-based networks. Parikh holds a B.S. degree in electrical engineering and a Master's degree in communication theory.
Junius Kim
bio
Junius Kim is a hardware engineer at GatesAir. Kim was a key member of the Harris design team responsible for creating the SynchroCast simulcasting system and IP Link, a next-generation IP audio codec. His current interests include the architecture and design of robust packet-switched-based telecommunication systems. Kim holds B.S. and M.S. degrees in electrical engineering.
Copyright: © 2014 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Salsano S. Ludovici F. Ordone A. “Definition of a General and Intuitive Loss Model for Packet Networks and Its Implementation in the Netem Module in the Linux Kernel,” http://netgroup.uniroma2.it/TR/TRloss-netem.pdf , August 2012 . EXTERNAL
VoIP Troubleshooter , http://www.voiptroubleshooter.com/indepth/burstloss.html . EXTERNAL

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Keyur Parikh and Junius Kim; Methods for Mitigating IP Network Packet Loss in Realtime Audio Streaming Applications, SMPTE Motion Imaging Journal ( Volume: 123, Issue: 5, July 2014); SMPTE, 2014. Available at https://doi.org/10.5594/j18430

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Keyur Parikh and Junius Kim; Methods for Mitigating IP Network Packet Loss in Realtime Audio Streaming Applications, SMPTE Motion Imaging Journal ( Volume: 123, Issue: 5, July 2014); SMPTE, 2014. Available at https://doi.org/10.5594/j18430

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<span class="citation">Keyur Parikh and Junius Kim; <cite>Methods for Mitigating IP Network Packet Loss in Realtime Audio Streaming Applications</cite>, SMPTE Motion Imaging Journal ( Volume: 123, Issue: 5, July 2014); SMPTE, 2014. Available at <a href="https://doi.org/10.5594/j18430" target="_blank" rel="noopener">https://doi.org/10.5594/j18430</a></span>

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Keyur Parikh and Junius Kim; <cite id="bib-10-5594-j18430">Methods for Mitigating IP Network Packet Loss in Realtime Audio Streaming Applications</cite>, SMPTE Motion Imaging Journal ( Volume: 123, Issue: 5, July 2014); SMPTE, 2014
<span class="doi">10.5594/j18430</span>
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