RFC 3738 (rfc3738) - Page 1 of 32

Wave and Equation Based Rate Control (WEBRC) Building Block

Network Working Group                                            M. Luby
Request for Comments: 3738                              Digital Fountain
Category: Experimental                                          V. Goyal
                                                                  M.I.T.
                                                              April 2004


      Wave and Equation Based Rate Control (WEBRC) Building Block

Status of this Memo

   This memo defines an Experimental Protocol for the Internet
   community.  It does not specify an Internet standard of any kind.
   Discussion and suggestions for improvement are requested.
   Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

   This document specifies Wave and Equation Based Rate Control (WEBRC),
   which provides rate and congestion control for data delivery.  WEBRC
   is specifically designed to support protocols using IP multicast.  It
   provides multiple-rate, congestion-controlled delivery to receivers,
   i.e., different receivers joined to the same session may be receiving
   packets at different rates depending on the bandwidths of their
   individual connections to the sender and on competing traffic along
   these connections.  WEBRC requires no feedback from receivers to the
   sender, i.e., it is a completely receiver-driven congestion control
   protocol.  Thus, it is designed to scale to potentially massive
   numbers of receivers attached to a session from a single sender.
   Furthermore, because each individual receiver adjusts to the
   available bandwidth between the sender and that receiver, there is
   the potential to deliver data to each individual receiver at the
   fastest possible rate for that receiver, even in a highly
   heterogeneous network architecture, using a single sender.













Luby & Goyal                 Experimental