How bad is reliable multicast without local recovery?

Jorg Nonnenmacher, Martin Lacher, Matthias Jung, Ernst W. Biersack, Georg Carle

Research output: Contribution to journalConference articlepeer-review

68 Scopus citations


We examine the impact of the loss recovery mechanisms on the performance of a reliable multicast protocol. Approaches to reliable multicast can be divided into two major classes: source-based recovery, and distributed recovery. For both classes we consider the state of the art: For source-based recovery, a type 2 hybrid ARQ scheme with parity retransmission. For distributed recovery, a scheme with local multicast retransmission and local feedback processing. We further show the benefits of combining the two approaches and consider a type 2 hybrid ARQ scheme with local retransmission. The schemes are compared for up to 106 receivers under different loss scenarios with respect to network bandwidth usage and completion time of a reliable transfer. We show that the protocol based on local retransmissions via type 2 hybrid ARQ performs best for bandwidth and latency. For networks, where local retransmission is not possible, we show that a protocol based on type 2 hybrid ARQ comes close to the performance of a protocol with local retransmissions.

Original languageEnglish
Pages (from-to)972-979
Number of pages8
JournalProceedings - IEEE INFOCOM
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 17th Annual IEEE Conference on Computer Communications, INFOCOM. Part 1 (of 3) - San Francisco, CA, USA
Duration: 29 Mar 19982 Apr 1998


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