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Dynamic encoding rate control minimizes traffic congestion in a packet network

  • US 5,115,429 A
  • Filed: 08/02/1990
  • Issued: 05/19/1992
  • Est. Priority Date: 08/02/1990
  • Status: Expired due to Term
First Claim
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1. A method for minimizing traffic overload at an edge node in a packet network that carries bursty traffic and includes intermediate nodes through which traffic is routed, the method comprising the steps of:

  • coding bursty information at one edge node into a digital format for transmission as packets to another edge node, the coding including a first coding rate utilized except during a traffic overload and a second coding rate less than the first rate;

    determining at said one edge node if a reverse congestion indicator (RCIB) in the header of a packet sent from said another node is set thereby indicating a traffic overload condition in the transmission path from said one edge node to said another node;

    if said RCIB is set, utilizing said second coding rate at said one node to reduce the traffic input into the network.

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