×

Data packet flow control scheme for switching networks

  • US 4,475,192 A
  • Filed: 02/16/1982
  • Issued: 10/02/1984
  • Est. Priority Date: 02/16/1982
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of controlling flow rate of data packets through a node on each of a plurality of paths extending from a plurality of sender units to a plurality of receiver units connected thereto through the node, the node being arranged to grant a number of node credits to each sender unit to permit such sender unit to send a corresponding number of data packets to the node, to forward a number of the data packets sent to the node toward the receiver unit connected thereto when holding a corresponding number of receiver credits granted by such receiver unit and to process the data packets from all sender units through shared resources of the node, comprising the steps of:

  • determining a quantity of node congestion in accordance with the quantity of packets from all sender units being processed through the shared resources,granting node credits to each individual one of the sender units limited in number to a selected number when the node congestion quantity exceeds a predetermined threshold, andgranting a further number of node credits to the one sender unit in excess of the selected number when the node congestion quantity fails to exceed the threshold.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×