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Enhancements of the dynamic TXOP limit in EDCA through a high-speed wireless campus network

Alam, Mohammed Khorshed and Abdul Latif, Suhaimi and Akter, Mahmuda and Anwar, Farhat and Hasan, Mohammad Kamrul (2016) Enhancements of the dynamic TXOP limit in EDCA through a high-speed wireless campus network. Wireless Personal Communications, 90 (4). pp. 1647-1672. ISSN 0929-6212

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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 endto- end delay. Additionally, the results show that the proposed scheme significantly improves global throughput.

Item Type: Article (Journal)
Additional Information: 3064/56425
Uncontrolled Keywords: IEEE802.11e, Dynamic TXOP limit, EDCA, WCN, Multimedia applications
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User: Dr Suhaimi Abd Latif
Date Deposited: 12 Apr 2017 09:07
Last Modified: 18 Jul 2017 15:22
URI: http://irep.iium.edu.my/id/eprint/56425

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