Abstract
Multicast connections have a bandwidth saving nature. This means that a multicast connection – in taking the form of a tree with streams merging at the nodes – requires much less capacity from the network links than a bunch of separate point-to-point connections providing the same connectivity. In this paper, we consider dynamic multicast connections that can be used to model, for example, TV or radio delivery on a telecommunications network, such as an ATM network with virtual circuits. We show how to calculate the blocking probabilities of requests to join such a tree. First, we consider the blocking probabilities occurring in a single link. The resulting model is able to capture heterogeneous capacity requirements for different multicast channels. Then we extend the results to a whole network using the reduced load approximation. The accuracy of the approximation method is studied by simulations.
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Karvo, J., Martikainen, O., Virtamo, J. et al. Blocking of Dynamic Multicast Connections. Telecommunication Systems 16, 467–481 (2001). https://doi.org/10.1023/A:1016631431617
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DOI: https://doi.org/10.1023/A:1016631431617