Multiplex communications – Wide area network – Packet switching
Patent
1995-09-20
1997-12-30
Lee, Thomas C.
Multiplex communications
Wide area network
Packet switching
39520043, 395200, 395 62, 370229, 370236, G06G 1314
Patent
active
057040478
ABSTRACT:
An ATM communication system for statistical multiplexing of message cells has a plurality of upstream interfaces, at least one multistage funnel of switching elements connected thereto, and at least one downstream interface. Each of the switching elements comprises a plurality of inputs and at least one output to which a logical queue is associated. The logical queue of each of the switching elements is common for different traffic classes. For the filling of the logical queues to each of the traffic classes, a predetermined threshold is defined. In case of exceeding the threshold for the respective traffic class by receiving a message cell for this traffic class, a back pressure signal is transmitted only to the switching element or upstream interface, respectively, just transmitting this message cell. The transmission of message cells is stopped by this switching element or upstream interface, respectively, for a predetermined period of time periodically until a resetting of the back pressure signal.
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Kim Ki S.
Lee Thomas C.
Siemens Aktiengesellschaft
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