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 codificação de rede é uma técnica promissora para melhorar o desempenho do sistema em redes multihop sem fio. Neste artigo, o rendimento e a imparcialidade em redes sem fio multiusuário de relé único são avaliados. O protocolo de acesso múltiplo com detecção de portadora com prevenção de colisão (CSMA/CA) e a codificação de rede são usados na subcamada de controle de acesso ao meio (MAC) em tais redes. A imparcialidade do acesso ao meio sem fio entre estações (STAs), o ponto de acesso (AP) e a estação retransmissora (RS) resulta em fluxos bidirecionais assimétricos através do RS; como resultado, a taxa de transferência sem fio diminui substancialmente. Para superar este problema, uma otimização autônoma do tamanho mínimo da janela de contenção é desenvolvida para CSMA/CA e codificação de rede para atribuir oportunidades de transmissão apropriadas tanto para o AP quanto para o RS. Ao otimizar o tamanho mínimo da janela de contenção de acordo com o número de STAs, o rendimento sem fio em redes multiusuário de relé único pode ser melhorado e a imparcialidade entre fluxos bidirecionais através do RS pode ser alcançada. Análises numéricas e simulações computacionais nos permitem avaliar o desempenho de CSMA/CA e codificação de rede em redes sem fio multiusuário de relé único.
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Chun-Hsiang HUANG, Daisuke UMEHARA, Satoshi DENNO, Masahiro MORIKURA, Takatoshi SUGIYAMA, "Enhancement of CSMA/CA and Network Coding in Single-Relay Multi-User Wireless Networks" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 12, pp. 3371-3380, December 2010, doi: 10.1587/transcom.E93.B.3371.
Abstract: Network coding is a promising technique for improving system performance in wireless multihop networks. In this paper, the throughput and fairness in single-relay multi-user wireless networks are evaluated. The carrier sense multiple access with collision avoidance (CSMA/CA) protocol and network coding are used in the medium access control (MAC) sublayer in such networks. The fairness of wireless medium access among stations (STAs), the access point (AP), and the relay station (RS) results in asymmetric bidirectional flows via the RS; as a result the wireless throughput decreases substantially. To overcome this problem, an autonomous optimization of minimum contention window size is developed for CSMA/CA and network coding to assign appropriate transmission opportunities to both the AP and RS. By optimizing the minimum contention window size according to the number of STAs, the wireless throughput in single-relay multi-user networks can be improved and the fairness between bidirectional flows via the RS can be achieved. Numerical analysis and computer simulations enable us to evaluate the performances of CSMA/CA and network coding in single-relay multi-user wireless networks.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.3371/_p
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@ARTICLE{e93-b_12_3371,
author={Chun-Hsiang HUANG, Daisuke UMEHARA, Satoshi DENNO, Masahiro MORIKURA, Takatoshi SUGIYAMA, },
journal={IEICE TRANSACTIONS on Communications},
title={Enhancement of CSMA/CA and Network Coding in Single-Relay Multi-User Wireless Networks},
year={2010},
volume={E93-B},
number={12},
pages={3371-3380},
abstract={Network coding is a promising technique for improving system performance in wireless multihop networks. In this paper, the throughput and fairness in single-relay multi-user wireless networks are evaluated. The carrier sense multiple access with collision avoidance (CSMA/CA) protocol and network coding are used in the medium access control (MAC) sublayer in such networks. The fairness of wireless medium access among stations (STAs), the access point (AP), and the relay station (RS) results in asymmetric bidirectional flows via the RS; as a result the wireless throughput decreases substantially. To overcome this problem, an autonomous optimization of minimum contention window size is developed for CSMA/CA and network coding to assign appropriate transmission opportunities to both the AP and RS. By optimizing the minimum contention window size according to the number of STAs, the wireless throughput in single-relay multi-user networks can be improved and the fairness between bidirectional flows via the RS can be achieved. Numerical analysis and computer simulations enable us to evaluate the performances of CSMA/CA and network coding in single-relay multi-user wireless networks.},
keywords={},
doi={10.1587/transcom.E93.B.3371},
ISSN={1745-1345},
month={December},}
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TY - JOUR
TI - Enhancement of CSMA/CA and Network Coding in Single-Relay Multi-User Wireless Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 3371
EP - 3380
AU - Chun-Hsiang HUANG
AU - Daisuke UMEHARA
AU - Satoshi DENNO
AU - Masahiro MORIKURA
AU - Takatoshi SUGIYAMA
PY - 2010
DO - 10.1587/transcom.E93.B.3371
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2010
AB - Network coding is a promising technique for improving system performance in wireless multihop networks. In this paper, the throughput and fairness in single-relay multi-user wireless networks are evaluated. The carrier sense multiple access with collision avoidance (CSMA/CA) protocol and network coding are used in the medium access control (MAC) sublayer in such networks. The fairness of wireless medium access among stations (STAs), the access point (AP), and the relay station (RS) results in asymmetric bidirectional flows via the RS; as a result the wireless throughput decreases substantially. To overcome this problem, an autonomous optimization of minimum contention window size is developed for CSMA/CA and network coding to assign appropriate transmission opportunities to both the AP and RS. By optimizing the minimum contention window size according to the number of STAs, the wireless throughput in single-relay multi-user networks can be improved and the fairness between bidirectional flows via the RS can be achieved. Numerical analysis and computer simulations enable us to evaluate the performances of CSMA/CA and network coding in single-relay multi-user wireless networks.
ER -