H - Electricity – 04 – L
Patent
H - Electricity
04
L
344/26
H04L 12/56 (2006.01)
Patent
CA 1326284
ABSTRACT A fast packet switching system includes an interconnection network with a distributed control structure composed of multiple processing units which manage routing of calls at a virtual call level. Some of the processing units, each associated with a group of network inputs or outputs, store bandwidth occupancy data relevant to links between stages accessible from or to the inputs or outputs of the group and between those inputs or outputs and a central network stage providing a maximum number of alternative paths, the data being updated whenever a new call has been routed. When the routing of a new call is to be decided, the processing units associated with the input and output involved in the connection evaluate each possible routing, on the basis of the updated data which they store as to bandwidth occupancy, and according to the bandwidth requirements of the new call, so as to provide a partial cost function of the portion of each possible routing through the links in respect of which they hold bandwidth occupancy data. One of the units involved combines the partial cost functions for each complete routing, selects that providing the minimum cost function, and forwards the call on that routing.
600310
Cselt - Centro Studi E. Laboratori Telecommunicazioni S.p.a.
Ridout & Maybee Llp
LandOfFree
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