On optimal unequal error/erasure protection of scalable video multicasting using randomized linear network codes

John K. Zao*, Qifu Tyler Sun, Kuo Kuang Yen, Shuo Yen Robert Li, Chung-Hsuan Wang, Chien Yao, Tong Liang, Nicolas A. Claude, Jennifer Yip

*Corresponding author for this work

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

1 Scopus citations

Abstract

Unequal error/erasure protection (UEP) is often employed in multilayer video streaming to ensure successful reception of the important reference layers. In this paper, we investigate possible ways to provide such protection to the multicasting sessions of scalable video codes (SVC) using randomized linear network codes (RLNCs). We surmised that it takes both proper combination of transmitted symbols at the source nodes and selective mixing of these symbols over the transport network to produce desirable UEP effects. To test our hypothesis, we conducted multicasting experiments over acyclic transport networks exhibiting localized or widespread packet losses. We observed that only a small collection of RLNCs is capable of providing proper UEP by taking into account the utility values of different SVC layers and the packet loss rates along different communication links. Specifically, we discovered layered coding structures in the optimal UEP-RLNCs that mirror corresponding layered structures in the scalable video codes. We also quantified the UEP capability of network codes using separation vectors and showed the gradual changes of codeword separations among different UEP-RLNCs. Finally, we developed a prototype implementation of UEP-RLNCs by extending Chou et al.'s practical network coding scheme.

Original languageEnglish
Title of host publication2011 International Symposium on Network Coding, NETCOD 2011 - Proceedings
DOIs
StatePublished - 26 Sep 2011
Event2011 International Symposium on Network Coding, NETCOD 2011 - Beijing, China
Duration: 25 Jul 201127 Jul 2011

Publication series

Name2011 International Symposium on Network Coding, NETCOD 2011 - Proceedings

Conference

Conference2011 International Symposium on Network Coding, NETCOD 2011
CountryChina
CityBeijing
Period25/07/1127/07/11

Keywords

  • practical network coding
  • randomized linear network codes
  • scalable video codes
  • separation vectors
  • unequal error protection

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    Zao, J. K., Sun, Q. T., Yen, K. K., Li, S. Y. R., Wang, C-H., Yao, C., Liang, T., Claude, N. A., & Yip, J. (2011). On optimal unequal error/erasure protection of scalable video multicasting using randomized linear network codes. In 2011 International Symposium on Network Coding, NETCOD 2011 - Proceedings [5978950] (2011 International Symposium on Network Coding, NETCOD 2011 - Proceedings). https://doi.org/10.1109/ISNETCOD.2011.5978950