A study of proactive hybrid FEC/ARQ and scalable feedback techniques for reliable, real-time multicast

  • Authors:
  • D Rubenstein;J Kurose;D Towsley

  • Affiliations:
  • Computer Science Department, University of Massachusetts, Amherst, MA 01003, USA;Computer Science Department, University of Massachusetts, Amherst, MA 01003, USA;Computer Science Department, University of Massachusetts, Amherst, MA 01003, USA

  • Venue:
  • Computer Communications
  • Year:
  • 2001

Quantified Score

Hi-index 0.24

Visualization

Abstract

In this paper, we examine the performance benefits of using parity encoding for reliable delivery of data to multiple receivers, where the receivers have heterogeneous loss and delay characteristics. First, we examine the effect of sending parity loss repairs proactively to receivers before it is known whether or not the repairs are needed to repair losses. We show that in many cases, proactive repair can reduce feedback implosion and the expected delay of reliable delivery without increasing bandwidth usage. Next, we examine how proactive repairs can be used to meet end-to-end deadlines to within a tunable probability. Last, we examine several receiver feedback mechanisms for parity repairs in a heterogeneous networking environment, and find that the various mechanisms offer different levels of robustness. Our examinations take into account temporally correlated (bursty) loss, as well as loss of feedback messages from receivers.