| 摘要 |
In an asynchronous switching node, n1 input modules and n2 output modules are interconnected by an asynchronous cell switching network. The network routes a cell transmitted by an input module to an output module, in the case of a cell of a unicast flow; the network routes a cell transmitted by an input module to N output modules in the case of a cell of a multicast flow, by generating itself the N copied cells from the transmitted cell. A flow control mechanism is designed to share the bandwidth available for each pair of an input module and an output module, based on the bandwidth requests of unicast flows for each module pair. In each input module, the bandwidth request of each individual multicast flow is converted into N bandwidth requests associated with N equivalent virtual unicast flows associated with this multicast flow. It is thus possible to use the flow control mechanism not only for unicast flow traffic, but also for multicast flow traffic.
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