有损网络下的高性能传输控制协议研究

doi:10.3969/j.issn.1000-436x.2014.07.009

Abstract

Abstract:

A novel redundancy parameter updating algorithm based on network coding combined TCP was proposed.Reduced coefficients linear network coding which could simplify decoding and simultaneously reduce the overhead in the header was involved in encoding process before data transmission.During the simulations,NS2 was used to test the communication under different lossy networks.Results showed that the new protocol which adopted this algorithm re-tained the fairness and outperformed the other protocols in effectiveness and adaptability especially under light-load net-works.

Key words: network coding, redundancy parameter, lossy network

Kai PAN,Hui LI. Research on the high-performance transmission control protocol under lossy networks[J]. Journal on Communications, 2014, 35(7): 70-76.

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References 13

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T/s	Loss Rate
1～20	10%
20～100	5%
100～250	8%
250～500	12%
500～550	20%
550～700	10%
700～800	5%
800～900	10%
900～950	20%
950～1000	5%

吞吐量	TCP-Westwood	TCP-NC	TCP-NCDR
吞吐量理论最大值/(Mbit·s^-1)	0.147 1	0.58	0.843
吞吐量理论平均值/(Mbit·s^-1)		0.899

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Research on the high-performance transmission control protocol under lossy networks

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