Abstract

Session

Multicast and Anycast

Paper

1-2

Full Paper

ps.gz

Title

pgmcc: A TCP-friendly Single-Rate Multicast Congestion Control Scheme

Author(s)

Luigi Rizzo (Universita di Pisa)

Abstract:

We present a single rate multicast congestion control scheme which is TCP-friendly and achieves scalability, stability and fast response to variations in network conditions. Our scheme is suitable for both non-reliable and reliable data transfers, and uses a window-based TCP-like controller based on positive ACKs and run between the sender and a group's representative, the {\em acker}. The innovative part of our scheme is a fast and low-overhead procedure to select (and track changes of) the acker, which permits us to consider the acker as a {\em moving} receiver rather than a {\em changing} one. As such, the scheme is robust to measurement errors, and support fast response to changes in the receiver set and/or network conditions. The scheme has been implemented in the PGM protocol, and the paper presents a number of experimental results on its performance.