The wave & probe communication mechanisms

Citation
V. Tsaoussidis et al., The wave & probe communication mechanisms, J SUPERCOMP, 20(2), 2001, pp. 115-135
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Computer Science & Engineering
Journal title
JOURNAL OF SUPERCOMPUTING
ISSN journal
0920-8542 → ACNP
Volume
20
Issue
2
Year of publication
2001
Pages
115 - 135
Database
ISI
SICI code
0920-8542(2001)20:2<115:TW&PCM>2.0.ZU;2-Q
Abstract
This paper is motivated by the modifications recently suggested to enhance TCP performance over wireless channels. We argue that TCP end-to-end error- control mechanism lacks the functionality to respond appropriately in situa tions where errors vary in nature, frequency, or duration. As a result, thi s mechanism could, under some circumstances, yield zero throughput achievem ents at high energy-cost, or degrade throughput performance without conserv ing energy. This incompetent behavior with respect to the energy/throughput tradeoff puts in question TCP's suitability as a universal, reliable trans port protocol of choice, especially for battery-powered mobile devices for which energy is a critical resource and congestion is not the exclusive cau se of errors. We propose "Wave" and "Probing" communication and control mechanisms that p ermit end-to-end protocols to detect congestion without necessarily experie ncing packet drops, to distinguish random and burst errors from congestion, and, as conditions vary, to rapidly adjust the transmission window upwards or downwards depending on the nature of the error. We report extensively o n the performance of these new mechanisms to demonstrate their energy-conse rving and high-throughput capabilities.