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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
IEEE 802 é um padrão para LANs sem fio. O método básico de acesso em seu protocolo de camada MAC é a função de coordenação distribuída (DCF) para redes ad hoc. É baseado no mecanismo de acesso múltiplo com detecção de portadora com prevenção de colisão (CSMA/CA). DCF é usado para suportar transmissão assíncrona de dados. Entretanto, os quadros em DCF não possuem prioridades, tornando-os inadequados para aplicações em tempo real. Com um pouco de azar, uma estação pode ter que esperar um tempo arbitrariamente longo para enviar um quadro. Neste artigo, propomos um método para modificar o protocolo CSMA/CA de forma que as prioridades das estações possam ser suportadas. O método é simples, eficiente e fácil de implementar em comparação com a função de coordenação de pontos (PCF), outro método de acesso no IEEE 11 baseado em pontos de acesso (estações base). Simulações são realizadas para analisar o esquema proposto. Os resultados mostram que o DCF é capaz de transportar o tráfego priorizado com o esquema proposto.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copiar
Dr-Jiunn DENG, Ruay-Shiung CHANG, "A Priority Scheme for IEEE 802. 11 DCF Access Method" in IEICE TRANSACTIONS on Communications,
vol. E82-B, no. 1, pp. 96-102, January 1999, doi: .
Abstract: IEEE 802. 11 is a standard for wireless LANs. The basic access method in its MAC layer protocol is the distributed coordination function (DCF) for the ad hoc networks. It is based on the mechanism of carrier sense multiple access with collision avoidance (CSMA/CA). DCF is used to support asynchronous data transmission. However, frames in DCF do not have priorities, making it unsuitable for real-time applications. With a little bad luck, a station might have to wait arbitrarily long to send a frame. In this paper, we propose a method to modify the CSMA/CA protocol such that station priorities can be supported. The method is simple, efficient and easy to implement in comparison to point coordination function (PCF), another access method in IEEE 802. 11 based on access points (base stations). Simulations are conducted to analyze the proposed scheme. The results show that DCF is able to carry the prioritized traffic with the proposed scheme.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e82-b_1_96/_p
Copiar
@ARTICLE{e82-b_1_96,
author={Dr-Jiunn DENG, Ruay-Shiung CHANG, },
journal={IEICE TRANSACTIONS on Communications},
title={A Priority Scheme for IEEE 802. 11 DCF Access Method},
year={1999},
volume={E82-B},
number={1},
pages={96-102},
abstract={IEEE 802. 11 is a standard for wireless LANs. The basic access method in its MAC layer protocol is the distributed coordination function (DCF) for the ad hoc networks. It is based on the mechanism of carrier sense multiple access with collision avoidance (CSMA/CA). DCF is used to support asynchronous data transmission. However, frames in DCF do not have priorities, making it unsuitable for real-time applications. With a little bad luck, a station might have to wait arbitrarily long to send a frame. In this paper, we propose a method to modify the CSMA/CA protocol such that station priorities can be supported. The method is simple, efficient and easy to implement in comparison to point coordination function (PCF), another access method in IEEE 802. 11 based on access points (base stations). Simulations are conducted to analyze the proposed scheme. The results show that DCF is able to carry the prioritized traffic with the proposed scheme.},
keywords={},
doi={},
ISSN={},
month={January},}
Copiar
TY - JOUR
TI - A Priority Scheme for IEEE 802. 11 DCF Access Method
T2 - IEICE TRANSACTIONS on Communications
SP - 96
EP - 102
AU - Dr-Jiunn DENG
AU - Ruay-Shiung CHANG
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E82-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 1999
AB - IEEE 802. 11 is a standard for wireless LANs. The basic access method in its MAC layer protocol is the distributed coordination function (DCF) for the ad hoc networks. It is based on the mechanism of carrier sense multiple access with collision avoidance (CSMA/CA). DCF is used to support asynchronous data transmission. However, frames in DCF do not have priorities, making it unsuitable for real-time applications. With a little bad luck, a station might have to wait arbitrarily long to send a frame. In this paper, we propose a method to modify the CSMA/CA protocol such that station priorities can be supported. The method is simple, efficient and easy to implement in comparison to point coordination function (PCF), another access method in IEEE 802. 11 based on access points (base stations). Simulations are conducted to analyze the proposed scheme. The results show that DCF is able to carry the prioritized traffic with the proposed scheme.
ER -