A Compatible EWLN-Capable TCP for Wired-Cum-Wireless Networks(Special Section on Multi-dimensional Mobile Information Networks)
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概要
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TCP is a reliable transport protocol tuned to perform well in traditional wired networks, where most packet losses are due to congestion. In wireless networks, however, packet losses result from wireless link loss in addition to congestion loss. Thus, TCP suffers a significant degradation in performance over wireless networks because it does not distinguish wireless link loss from congestion loss. To overcome this problem, the explicit wireless loss notification (EWLN) scheme is proposed to explicitly inform wireless link loss to the TCP sender. Previous work to deploy EWLN often lacked explicit specification of the interplay between EWLN and link-layer protocols, including error recovery mechanisms. In addition, many systems, being based on computation demanding the functionality of agents at a base station, were designed for the scenario where information is accessed from a mobile station through a wireless-to-wired connection. In this paper, we present an EWLN scheme that deploys the information from the MAC layer and takes into account the interplay with the error recovery mechanism at the link layer. The scheme does not require different implementations for mobile terminals and base stations and hence can support efficient TCP-based data transmission over wired-to-wireless and wireless-to-wired connections as well as ad-hoc networks.
- 2003-07-01
著者
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ZHANG Bing
ATR Adaptive Communications Research Laboratories
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Zhang Bing
Atr Adaptive Communications Research Lab.
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Shirazi Mahdad
Communications Research Laboratory
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Hasuike Kazuo
Communications Research Laboratory
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- A Compatible EWLN-Capable TCP for Wired-Cum-Wireless Networks(Special Section on Multi-dimensional Mobile Information Networks)