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Article | REF: TE7573 V1

TCP - Impact of link characteristics

Author: David ROS

Publication date: May 10, 2007

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2. Impact of transmission times and capacities

2.1 Capacity-delay product (BDP)

With regard to the use of available link capacity [34, section 3.1], the sliding-window flow control mechanism has an impact on TCP performance: as the size of the effective transmission window increases, the TCP sender will inject more and more segments without waiting for the ACKs confirming this data to be received, until transmission is completed without interruption.

  • Let's consider an idealized network, consisting of a TCP sender and receiver linked directly to each other by a single link, whose net transmission capacity (i.e., seen at TCP level, before data encapsulation by lower layers) is C bytes/s. Figure

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Impact of transmission times and capacities
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