Dealing with user heterogeneity in P2P multiparty video conferencing: Layered coding versus receiver partitioning

Eymen Kurdoglu, Yong Liu, Yao Wang

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

Abstract

Layered coding elegantly handles user bandwidth heterogeneity in video conferencing, however, it incurs rate and complexity overheads. An alternative is partitioning the receiver sets and using non-layered coding for each group. In this paper, we investigate how to maximize the received video quality for both systems under uplink and downlink capacity constraints, while limiting the number of hops that the videos travel by two. Towards this end, we first show that any multicast tree is equivalent to a collection of depth-1 and depth-2 trees, under outbound and inbound flow constraints. For the layered system, we propose an algorithm that simultaneously solves for the number of video layers, the rate and distribution tree of each layer. For the receiver partitioning system, we develop an algorithm for determining the receiver partitions and tree construction for each group. Through numerical comparison study, we show that the receiver partitioning system achieves significantly higher video quality than the layered system, due to its higher coding efficiency.

Original languageEnglish (US)
Title of host publication2014 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages239-244
Number of pages6
ISBN (Print)9781479930883
DOIs
StatePublished - Jan 1 2014
Event2014 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2014 - Toronto, ON, Canada
Duration: Apr 27 2014May 2 2014

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X

Other

Other2014 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2014
CountryCanada
CityToronto, ON
Period4/27/145/2/14

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ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

Cite this

Kurdoglu, E., Liu, Y., & Wang, Y. (2014). Dealing with user heterogeneity in P2P multiparty video conferencing: Layered coding versus receiver partitioning. In 2014 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2014 (pp. 239-244). [6849238] (Proceedings - IEEE INFOCOM). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INFCOMW.2014.6849238