The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
A injustiça por fluxo da taxa de transferência TCP no ambiente de LAN sem fio (WLAN) IEEE 802.11 foi relatada na literatura anterior. Vários investigadores propuseram vários métodos para aliviar a injustiça; a maioria exige modificação de protocolos MAC ou mecanismos de gerenciamento de filas em pontos de acesso. No entanto, os protocolos MAC dos pontos de acesso são geralmente implementados ao nível do hardware, pelo que a alteração destes protocolos é dispendiosa. Como primeira contribuição deste artigo, propomos uma solução na camada de transporte para aliviar a injustiça entre os fluxos TCP, exigindo uma pequena modificação nos mecanismos de controle de congestionamento TCP apenas em estações WLAN. Na literatura anterior sobre questões de justiça nos fluxos da Internet, o desempenho das soluções propostas para aliviar a injustiça foi avaliado separadamente da utilização da largura de banda da rede, o que significa que não consideraram as relações de compromisso entre justiça e utilização da largura de banda. Portanto, como segunda contribuição deste artigo, apresentamos uma nova métrica de desempenho para avaliar as relações de trade-off entre a justiça por fluxo e a utilização da largura de banda no gargalo da rede. Confirmamos as características fundamentais do método proposto através de experimentos de simulação e avaliamos o desempenho do método proposto através de experimentos em ambientes WLAN reais. Mostramos que o método proposto pode alcançar um melhor equilíbrio entre justiça e utilização de largura de banda, independentemente das implementações do fornecedor de pontos de acesso sem fio e placas de interface sem fio.
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Masafumi HASHIMOTO, Go HASEGAWA, Masayuki MURATA, "A Transport-Layer Solution for Alleviating TCP Unfairness in a Wireless LAN Environment" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 3, pp. 765-776, March 2011, doi: 10.1587/transcom.E94.B.765.
Abstract: Per-flow unfairness of TCP throughput in the IEEE 802.11 wireless LAN (WLAN) environment has been reported in past literature. A number of researchers have proposed various methods for alleviating the unfairness; most require modification of MAC protocols or queue management mechanisms in access points. However, the MAC protocols of access points are generally implemented at hardware level, so changing these protocols is costly. As the first contribution of this paper, we propose a transport-layer solution for alleviating unfairness among TCP flows, requiring a small modification to TCP congestion control mechanisms only on WLAN stations. In the past literature on fairness issues in the Internet flows, the performance of the proposed solutions for alleviating the unfairness has been evaluated separately from the network bandwidth utilization, meaning that they did not consider the trade-off relationships between fairness and bandwidth utilization. Therefore, as the second contribution of this paper, we introduce a novel performance metric for evaluating trade-off relationships between per-flow fairness and bandwidth utilization at the network bottleneck. We confirm the fundamental characteristics of the proposed method through simulation experiments and evaluate the performance of the proposed method through experiments in real WLAN environments. We show that the proposed method can achieve better a trade-off between fairness and bandwidth utilization, regardless of vendor implementations of wireless access points and wireless interface cards.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.765/_p
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@ARTICLE{e94-b_3_765,
author={Masafumi HASHIMOTO, Go HASEGAWA, Masayuki MURATA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Transport-Layer Solution for Alleviating TCP Unfairness in a Wireless LAN Environment},
year={2011},
volume={E94-B},
number={3},
pages={765-776},
abstract={Per-flow unfairness of TCP throughput in the IEEE 802.11 wireless LAN (WLAN) environment has been reported in past literature. A number of researchers have proposed various methods for alleviating the unfairness; most require modification of MAC protocols or queue management mechanisms in access points. However, the MAC protocols of access points are generally implemented at hardware level, so changing these protocols is costly. As the first contribution of this paper, we propose a transport-layer solution for alleviating unfairness among TCP flows, requiring a small modification to TCP congestion control mechanisms only on WLAN stations. In the past literature on fairness issues in the Internet flows, the performance of the proposed solutions for alleviating the unfairness has been evaluated separately from the network bandwidth utilization, meaning that they did not consider the trade-off relationships between fairness and bandwidth utilization. Therefore, as the second contribution of this paper, we introduce a novel performance metric for evaluating trade-off relationships between per-flow fairness and bandwidth utilization at the network bottleneck. We confirm the fundamental characteristics of the proposed method through simulation experiments and evaluate the performance of the proposed method through experiments in real WLAN environments. We show that the proposed method can achieve better a trade-off between fairness and bandwidth utilization, regardless of vendor implementations of wireless access points and wireless interface cards.},
keywords={},
doi={10.1587/transcom.E94.B.765},
ISSN={1745-1345},
month={March},}
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TY - JOUR
TI - A Transport-Layer Solution for Alleviating TCP Unfairness in a Wireless LAN Environment
T2 - IEICE TRANSACTIONS on Communications
SP - 765
EP - 776
AU - Masafumi HASHIMOTO
AU - Go HASEGAWA
AU - Masayuki MURATA
PY - 2011
DO - 10.1587/transcom.E94.B.765
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2011
AB - Per-flow unfairness of TCP throughput in the IEEE 802.11 wireless LAN (WLAN) environment has been reported in past literature. A number of researchers have proposed various methods for alleviating the unfairness; most require modification of MAC protocols or queue management mechanisms in access points. However, the MAC protocols of access points are generally implemented at hardware level, so changing these protocols is costly. As the first contribution of this paper, we propose a transport-layer solution for alleviating unfairness among TCP flows, requiring a small modification to TCP congestion control mechanisms only on WLAN stations. In the past literature on fairness issues in the Internet flows, the performance of the proposed solutions for alleviating the unfairness has been evaluated separately from the network bandwidth utilization, meaning that they did not consider the trade-off relationships between fairness and bandwidth utilization. Therefore, as the second contribution of this paper, we introduce a novel performance metric for evaluating trade-off relationships between per-flow fairness and bandwidth utilization at the network bottleneck. We confirm the fundamental characteristics of the proposed method through simulation experiments and evaluate the performance of the proposed method through experiments in real WLAN environments. We show that the proposed method can achieve better a trade-off between fairness and bandwidth utilization, regardless of vendor implementations of wireless access points and wireless interface cards.
ER -