An overlay multicast protocol for live streaming and delay-guaranteed interactive media

  • Authors:
  • Weizhan Zhang;Qinghua Zheng;Haifei Li;Feng Tian

  • Affiliations:
  • MOE KLINNS Lab and SKLMS Lab, School of Electronics and Information Engineering, Xi'an Jiaotong University, 710049 Xi'an, China;MOE KLINNS Lab and SKLMS Lab, School of Electronics and Information Engineering, Xi'an Jiaotong University, 710049 Xi'an, China;Department of Computer Science, Union University Jackson, TN 38305, USA;MOE KLINNS Lab and SKLMS Lab, School of Electronics and Information Engineering, Xi'an Jiaotong University, 710049 Xi'an, China

  • Venue:
  • Journal of Network and Computer Applications
  • Year:
  • 2012

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Abstract

In many collaborative multimedia applications, there is often a requirement for simultaneously supporting live streaming and shareable interaction. A major challenge in designing such an application by overlay multicast is how to simultaneously provide scalable live streaming and delay-guaranteed interactive media. Live streaming by overlay multicast incurs additional application-layer latency, which conflicts with the delay-sensitive property of interactive media. To handle this dilemma, in this paper, we propose a layered degree-constrained overlay multicast protocol, which organizes the overlay multicast tree as a layered degree-constrained core tree and an extended tree. The core tree maintains available resources in its top layers for subsequent two-way interaction, whereas the extended tree expands the core tree for one-way live streaming. Our simulation and experimental results show that the proposed overlay multicast protocol can simultaneously provide delay-guaranteed interactive media as well as scalable live streaming.