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Overview:

This paper presents smartacking, a technique that improves performance of Transmission Control Protocol (TCP) via adaptive generation of acknowledgments (ACKs) at the receiver. When the bottleneck link is underutilized, the receiver transmits an ACK for each delivered data segment and thereby allows the connection to acquire the available capacity promptly. When the bottleneck link is at its capacity, the smartacking receiver sends ACKs with a lower frequency reducing the control traffic overhead and slowing down the congestion window growth to utilize the network capacity more effectively. To promote quick deployment of the technique, the primary implementation of smartacking modifies only the receiver. This implementation estimates the sender's congestion window using a novel algorithm of independent interest.

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Format:PDFSize:673 KB
Date:Jan 2007
Pages:16

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