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Traffic management in packet communications networks

  • US 5,289,462 A
  • Filed: 08/19/1992
  • Issued: 02/22/1994
  • Est. Priority Date: 08/19/1992
  • Status: Expired due to Term
First Claim
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1. A packet communications network including a plurality of switching nodes interconnected by transmission links, and in which data packets are transmitted over multilink paths between a source node and a destination node, said packet communications network comprisingmeans for storing, at each said node, a representation of the traffic load reserved for all connections on each transmission link terminating in said node, said representation comprising a vector including the mean of the bit rate for all of said connections, the variance of said bit rate around said mean bit rate, and the sum of the equivalent bandwidths required to carry said connections if each said connection were offered in isolation,said equivalent bandwidth of a connection having a first value when the number of connections sharing one of said transmission links exceeds a predetermined value and having a second different value when said number of connections does not exceed said predetermined value, where said predetermined value is equal to or greater than ten.means for initiating a new connection in said network by propagating a connection request along the route selected for that connection, said connection request including a vector representing the mean, variance and equivalent bandwidth of said new connection,means responsive to said connection request for updating said representations of traffic load by vector addition at each of said nodes along said route.

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