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Multiple ACK windows providing congestion control in reliable multicast protocol

  • US 6,505,253 B1
  • Filed: 06/18/1999
  • Issued: 01/07/2003
  • Est. Priority Date: 06/30/1998
  • Status: Expired due to Term
First Claim
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1. A method for controlling congestion in a computer network during multicast transmission, comprising:

  • establishing a multicast repair tree having one sender station and a plurality of repair head stations, a one of said repair head stations retransmitting a selected message received from said sender station to an affiliated group of member stations upon receipt from a member station of an information message (ACK/NACK message) indicating that said selected message was not received;

    establishing a plurality of acknowledgment windows in a member station for transmission of said ACK/NACK message by said member station, each member station choosing one of said plurality of acknowledgment windows for transmission of its ACK/NACK mes-sage; and

    transmitting said ACK/NACK message by a member station during its chosen acknowledgment window.

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