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Improving TCP Performance Over Mobile Ad Hoc Networks by Exploiting Cross-Layer Information Awareness

Overview TCP performance degrades significantly in mobile ad hoc networks because most of packet losses occur as a result of route failures. Prior work proposed to provide link failure feedback to TCP so that TCP can avoid responding to route failures as if congestion had occurred. However, after a link failure is detected, several packets will be dropped from the network interface queue; TCP will time out because of these losses. It will also time out for ACK losses caused by route failures. This paper proposes to make routing protocols aware of lost data packets and ACKs and help reduce TCP timeouts for mobility-induced losses. Toward this end, it presents two mechanisms: Early Packet Loss Notification (EPLN) and Best-Effort ACK Delivery (BEAD).

Further White Paper Details
Publisher	Association for Computing Machinery	File Format	PDF
Date Published	January 2004
Format	White Papers
Topics	N/A

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