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Multicast flow control in priority-based IP networks

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2 Author(s)
Matrawy, A. ; Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada ; Lambadaris, I.

In this paper, we present simulation results of our research work in the area of multicast congestion control for video applications. This work is based on our proposal A. Matrawy et al. (2003) of the use of a new form of network support to multicast congestion control. Our approach is to bring together simple, loosely-coupled, router mechanisms and adopt them for the multicast case. We use a variant of the explicit congestion notification (ECN) mechanism to notify the sender of a multicast session of potential network congestion. We develop an end-to-end multicast system using this congestion control scheme. This included the development and tuning of an elaborate rate adaptation algorithm that operates at the sender. We build this system on top of a network that applies packet priority-dropping to insure providing minimum video quality during persistent congestion. In particular, the work is targeted at the IETF assured forwarding (AF) services networks. We show that the synergy of these mechanisms deals with the heterogeneity of receivers in a scalable manner and avoids the major problems of earlier approaches. We believe that this work is of great value to multicasting applications in future QoS-aware networks.

Published in:

Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on  (Volume:2 )

Date of Conference:

4-7 May 2003