Networking

Performance Evaluation of TCP With Adaptive Pacing and LRED in Multihop Wireless Networks

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Executive Summary

Transmission Control Protocol (TCP) was designed to provide reliable end-to-end delivery of data over unreliable networks. In practice, most TCP deployments have been carefully designed in the context of wired networks. Ignoring the properties of wireless and Ad-hoc Networks can lead to TCP implementations with poor performance. In a wireless network, however packet losses occur more often due to unreliable wireless links than due to congestion. When using TCP over wireless links, each packet loss on the wireless link results in congestion control measures being invoked at the source. This causes severe performance degradation. If there is any packet loss in wireless networks, then the reason for that has to be found out.

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