Receiver based congestion control
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United States of America Patent
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-
Sep 23, 2003
Grant Date -
N/A
app pub date -
May 6, 1999
filing date -
May 8, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a packet network, on receiving a packet a receiving host determines if the packet has been marked by any of the nodes through which it passed, to indicate congestion at that node, e.g. by checking the CE bit in an IP header. A packet flow control parameter is generated at the receiving side, and sent to the source using an Internet Protocol, as part of the packet acknowledgment, to control the flow of packets from the source, according to the packet flow control parameter. This can reduce control loop delays caused by waiting at the source for a number of acknowledgments to arrive before the congestion level can be calculated. Conditions at the receiver which may be different to those at the source can now be taken into account in the flow control.
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