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Erschienen in: Wireless Personal Communications 4/2016

15.06.2016

Enhancements of the Dynamic TXOP Limit in EDCA Through a High-Speed Wireless Campus Network

verfasst von: M. K. Alam, S. A. Latif, M. Akter, F. Anwar, Mohammad Kamrul Hasan

Erschienen in: Wireless Personal Communications | Ausgabe 4/2016

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Abstract

IEEE802.11e is a concrete challenge to providing quality of service (QoS) aimed at interactive multimedia (IMM) applications due to the resource allocation parameter for heterogeneous traffic flows. This parameter is fixed for different specific IMM traffic flows in the IEEE802.11e standard. However, due to the variation in traffic load on wireless campus networks (WCNs), the fixed allocation of the channel resource parameter is not sufficient to guarantee QoS for IMM traffic flows. Thus, many researchers have investigated dynamic regulation of this resource allocation parameter to ensure QoS. However, there are still some unresolved problems with this parameter. This paper introduces an enhanced EDCA resource allocation parameter named dynamic transmission opportunity (TXOP) limit that regulates according to the variation in traffic load over WCN. This work also employs a mathematical modelling approach for the proposed parameter and numerical analysis of the existing and proposed parameters. The evaluation of the proposed model is simulated using Qualnet 5.1. The simulation results show that the proposed scheme allows improving the QoS performance of IMM traffic by reducing end-to-end delay. Additionally, the results show that the proposed scheme significantly improves global throughput.

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Metadaten
Titel
Enhancements of the Dynamic TXOP Limit in EDCA Through a High-Speed Wireless Campus Network
verfasst von
M. K. Alam
S. A. Latif
M. Akter
F. Anwar
Mohammad Kamrul Hasan
Publikationsdatum
15.06.2016
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 4/2016
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-016-3416-4

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