Mobility

LHP: An End-to-End Reliable Transport Protocol Over Wireless Data Networks

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Executive Summary

The next generation wireless networks are posited to support large scale data applications. Implementing end-to-end TCP in such networks faces two problems. First, it is well known that TCP cannot distinguish packet losses due to link failures and that due to network congestion. Second, TCP congestion control mechanism does not deal effectively with large amount of out-of-order packet retransmissions; this problem has received less attention in literature. In this paper, the authors present solutions to both these problems. In particular, they present a Link Layer Protection (LHP) protocol which implements Explicit Loss Notification (ELN) in a simple, scalable manner, addressing the first problem.

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