Integrating concast and multicast communication models

Su Wen, James Griffioen, Rajendra Yavatkar

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


This paper defines a new group communication model called concast communication. Being the counterpart to multicast, concast involves multiple senders transmitting to a single receiver. Concast communication is used in a wide range of applications including collaborative applications, report-in style applications, or just end-to-end acknowledgments in a reliable multicast protocol. This paper explores the issues involved in designing concast communication services. We examine various message combination methods including concatenation, compression, and reduction to reduce the traffic loads imposed on the network and packet implosion at the receiver. Group management operations such as group creation/deletion, joining/leaving, and concast routing are discussed. We also address transmission issues such as reliable delivery, flow control, congestion control, and QoS. We conclude the paper by presenting a concast communication model that we have been developing in the context of TMTP5 (a reliable multicast protocol). The model uses concast communication to implement reliable multicast and it shares concast trees with the multicast group whenever possible to reduce overhead costs.

Original languageEnglish
Pages (from-to)143-153
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventProceedings of the 1998 Conference on Internet Routing and Quality of Service - Boston, MA, USA
Duration: Nov 2 1998Nov 4 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Integrating concast and multicast communication models'. Together they form a unique fingerprint.

Cite this