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One of TCP's key tasks is to react and avoid network congestion episodes which nor-mally arise in packet switched networks. A wide literature is available concerning the behaviour of congestion control algorithms in many different scenarios and several congestion control algorithms have been proposed in order to improve performances in specific scenarios. This paper focuses on the UMTS wireless scenario and it reports a campaign of measurements that involved around 3000 flows and more than 40 hours of measurements using three different TCP stacks: TCP NewReno, which is the congestion control algorithm standardized by IETF, TCP BIC which is the default congestion control algorithm adopted by the Linux operating system, and TCP Westwood+ also available in the Linux kernel.

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Format:PDFSize:443 KB
Date:Apr 2007
Pages:20

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