An accurate analytical model on blocking performance of multicast three-stage networks

The fast deployment of broadband networks and the evolution of communication services has revealed the importance of a network-wide availability of multicast communications, that is from one source to multiple destinations. This paper considers three-stage switching networks able to support multicas...

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Bibliographic Details
Published in:IEEE transactions on communications 2008-10, Vol.56 (10), p.1715-1721
Main Author: Pattavina, A.
Format: Article
Language:English
Subjects:
analytical model
Analytical models
Applied sciences
Availability
blocking performance
Broadband communication
Communication switching
Evolution
Exact sciences and technology
Joining processes
Joints
Mathematical analysis
Multicast
Multicast communication
Multicast traffic
Networks
Outlets
Probability
Switching
Switching and signalling
Switching theory
Systems, networks and services of telecommunications
Telecommunication traffic
Telecommunications
Telecommunications and information theory
Teletraffic
three-stage Clos networks
Traffic control
Transmission and modulation (techniques and equipments)
Unicast
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Summary:The fast deployment of broadband networks and the evolution of communication services has revealed the importance of a network-wide availability of multicast communications, that is from one source to multiple destinations. This paper considers three-stage switching networks able to support multicast traffic, i.e. connections in which one inlet of a node is connected to more than one outlet of the node at the same time. An analytical model is developed here that evaluates the blocking probability of multicast connections taking into account statistically the correlation between occupancy events in links belonging to different interstage patterns. Such new model proves to be more accurate than any previous model addressing the same issue. Interestingly enough, unlike other models the new formulation is consistent with the theoretical conditions of a non-blocking three-stage switching network.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2008.040442