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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/2236

Title: TCP k-SACK: a simple protocol to improve performance over lossy links
Authors: Chrungoo, Abhay
Gupta, Vishu
Saran, Huzur
Shorey, Rajeev
Keywords: TCP
Selective Acknowledgements (SACK)
Wireless networks
Lossy links
Bandwidth utilization
Throughput
Fairness
Drop tail
Congestion
Issue Date: 2001
Citation: Global Telecommunications Conference, GLOBECOM IEEE, 3, 1713 - 1717p.
Abstract: We propose k-SACK, a TCP variant that has considerably improved throughput characteristics over lossy links. A k-SACK source does not consider every packet loss as an indication of congestion. It uses the selective acknowledgement option to estimate a parameter lookahead-loss, which is used in congestion detection. Our results demonstrate that k-SACK maintains a steady performance in a non-lossy environment while showing considerable performance improvement over paths spanning lossy links. Throughput gains of more than 90% are observed over links with packet loss rates of the order of 5%. We show that when k-SACK is used over wireline Internet links, it does not harm the existing TCP variants significantly. k-SACK is simple to implement and does not involve any additional overheads
URI: http://eprint.iitd.ac.in/dspace/handle/2074/2236
Appears in Collections:Computer Science and Engineering

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