Delay-Constrained Multi-Ring Construction for Ordered Multipoint-to-Multipoint Communications
We describe a hierarchical topology for connecting users in large scale, Internet-based multipoint-to-multipoint applications. The multicast group is partitioned into sub-groups. Users who need to quickly transmit a lot of information to each other are gathered in the same sub-group which is connected by a sub-ring. All sub-rings are interconnected by a backbone ring. This two-level topology forms a multi-ring. We formulate an optimization problem to determine the topology that maximizes the bandwidth on the backbone, subject to delay constraints. We propose a heuristic to solve this problem and we show by simulation the good performance of our approximations. We show also that our heuristic is very promising in terms of computing time and backbone stability.
KeywordsTraffic Load Ring Topology Subgradient Method Backbone Ring Multicast Service
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- Network design, multipoint-to-multipoint applications, multi-ring, delay bounds, Lagrangean decomposition.Google Scholar
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