Distortion-resilient routing for video flows in wireless multi-hop networks

George Papageorgiou, Shailendra Singh, Srikanth V. Krishnamurthy, Ramesh Govindan, Tom La Porta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Traditional routing metrics designed for wireless networks are application agnostic. In this paper, we consider a wireless network where the application flows consist of video traffic. From a user-perspective, reducing the level of video distortion is critical. We ask the question "Should the routing policies change if the end-to-end video distortion is to be minimized?" Popular link-quality based routing metrics (such as ETX) do not account for dependence (in terms of congestion) across the links of a path; as a result, they can cause video flows to converge onto a few paths and thus, cause high video distortion. To account for the evolution of the video frame loss process we construct an analytical framework to first, understand and second, assess the impact of the wireless network on video distortion. The framework allows us to formulate a routing policy for minimizing distortion, based on which we design a protocol for routing video traffic. We find via simulations and testbed experiments that our protocol is efficient in reducing video distortion and minimizing the user experience degradation. Specifically, our protocol reduces the distortion by 20% over traditional methods, which significantly improves the video quality perceived by a user.

Original languageEnglish (US)
Title of host publication2012 20th IEEE International Conference on Network Protocols, ICNP 2012
DOIs
StatePublished - Dec 1 2012
Event2012 20th IEEE International Conference on Network Protocols, ICNP 2012 - Austin, TX, United States
Duration: Oct 30 2012Nov 2 2012

Publication series

NameProceedings - International Conference on Network Protocols, ICNP
ISSN (Print)1092-1648

Other

Other2012 20th IEEE International Conference on Network Protocols, ICNP 2012
CountryUnited States
CityAustin, TX
Period10/30/1211/2/12

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Software

Cite this

Papageorgiou, G., Singh, S., Krishnamurthy, S. V., Govindan, R., & La Porta, T. (2012). Distortion-resilient routing for video flows in wireless multi-hop networks. In 2012 20th IEEE International Conference on Network Protocols, ICNP 2012 [6459971] (Proceedings - International Conference on Network Protocols, ICNP). https://doi.org/10.1109/ICNP.2012.6459971