QoSMIC: quality of service sensitive multicast Internet protocol
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
A distributed multicast routing protocol for real-time multicast applications
IC3N '97 Selected papers of the 6th international conference on Computer communications and networks
Hop by hop multicast routing protocol
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
Hop-by-hop quality of service routing
Computer Networks: The International Journal of Computer and Telecommunications Networking
MAMCRA: a constrained-based multicast routing algorithm
Computer Communications
IEEE Network: The Magazine of Global Internetworking
Multicast routing and its QoS extension: problems, algorithms, and protocols
IEEE Network: The Magazine of Global Internetworking
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In future Internet, multimedia applications will be strongly present. When a group of users is concerned by the same traffic flow, the multicast communication can decrease considerably the network bandwidth utilization. The major part of this kind of multicast communication needs quality of service (QoS) specification. Often, the QoS is given as a set of QoS criteria and the computation of feasible or optimal routes corresponds to a multi-constrained optimization. Finding the multicast graph respecting the defined QoS requirements and minimizing network resources is a NPcomplete optimization task. Exhaustive search algorithms are not supported in real networks. Greedy algorithms was proposed to find good multicast sub-graphs. In this paper, we propose a greedy algorithm ICRA to improve the multi-constrained multicast sub-graph computed by the already proposed algorithm Mamcra. We show through different examples that ICRA tackles all cases that Mamcra fails to deal with.