Patent
Method for optimizing data transfer in a data network
Michael S. Borella,Nurettin B. Beser +1 more
- 12 Nov 1999
120
TL;DR: In this article, a method for optimizing data flow in a data network is presented, in which data packets from an application are to be transferred across the data network at a constant bitrate.
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Abstract: The present invention relates to a method for optimizing data flow in a data network. Data that is to be transferred across the network at a constant bitrate is handled differently by a Transmission Control Protocol (TCP) layer compared to other data. A TCP congestion control process is adapted to recognize whether data packets from an application are to be transferred across the data network at a constant bitrate. The constant bitrate channel may be recognized by a Quality of Service identifier or a TCP port number. If the data packets do belong to the constant bitrate channel, the TCP congestion control limits the congestion window for these data packets. The congestion window for data packets other than those in the constant bitrate channel is allowed to increase, as usual, until data packets are lost, at which point the congestion window is reduced to a maximum segment size. The congestion window for constant bitrate packets, however, is increased until it reaches a maximum value. The limiting value of the congestion window is the constant bitrate multiplied by the round trip delay time between sending a packet and receiving its acknowledgement. The modifications to the TCP process may provide for the transmission of constant bitrate data over the data network that does not experience a timeout.
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Citations
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References
TCP Slow Start, Congestion Avoidance, Fast Retransmit, and Fast Recovery Algorithms
W. R. Stevens
- 01 Jan 1997
TL;DR: The purpose of this document is to document four intertwined algorithms that have never been fully documented as Internet standards: slow start, congestion avoidance, fast retransmit, and fast recovery.
1.4K
Patent
Packet network and method for congestion avoidance in packet networks
Nobuyuki Tokura,Yoshio Kajiyama,Hideo Tatsuno +2 more
- 27 Apr 1993
TL;DR: In this paper, a congestion prediction circuit is proposed to predict the future packet transfer rate in a packet integrated network with variable rate terminal nodes and fixed rate node nodes, and a congestion signal is output or a rate increase request indication is deleted when it is predicted that the packet transfer ratio will exceed a permissible value.
123
Patent
Method and system for allocating bandwidth and buffer resources to constant bit rate (CBR) traffic
Guoliang Wu
- 03 Jun 1999
TL;DR: In this article, a method for allocating transmission resources to a constant rate connection includes determining a maximum cell clumping value for a constant-rate connection based on a peak cell rate and a cell delay variation tolerance for the connection.
36