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Control algorithm for QoS based multicast in Diffserv domain

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4 Author(s)
El Hachimi, M. ; Univ. de Haute Alsace, France ; Abouaissa, A. ; Lorenz, P. ; Sathya, R.

The migration of classic Internet to support real time and multimedia applications (videoconference, VoIP) require improvement of the network level service. Since several real-time and multimedia applications are multicast, our interest is to integrate Diffserv and multicasting in order to satisfy QoS requirements of the multicast group. The problem on which we are concentrating in this paper is related to providing QoS requirements for multicast applications using Diffserv and principally on overload traffic, which may be created by replication of multicast packets in Diffserv domain. In this case, the policing component in Diffserv routers may perform dropping packets and because core routers are working by aggregation, thus other traffic (the rest of traffic) may be affected. In this paper, we present a new protocol called control for QoS-based multicasting in Diffserv (CQMD) to resolve the multicast and Diffserv integration problem. This paper shows under what conditions the new member can be accepted into the multicast group in Diffserv domain. In addition CQMD can achieve QoS-satisfaction, ensure protection for other traffic in the Diffserv domain, good resources management and incur less message overhead.

Published in:

Communication Technology Proceedings, 2003. ICCT 2003. International Conference on  (Volume:1 )

Date of Conference:

9-11 April 2003