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Experimental performance evaluation and frame aggregation enhancement in IEEE 802.11n WLANs.

Author(s)
Nasreddine Hajlaoui ReDCAD Research Unit, National school of Engineers of Sfax, University of Sfax - 3038 Sfax, Tunisia
Issam Jabri ReDCAD Research Unit, National school of Engineers of Sfax, University of Sfax - 3038 Sfax, Tunisia
Maher Ben Jemaa ReDCAD Research Unit, National school of Engineers of Sfax, University of Sfax - 3038 Sfax, Tunisia
Hatem Bettaher IResCoMath Research Unit, National school of Engineers of Gabès, University of Gabès, Tunisia
Abstract
The IEEE 802.11n standard promises to extend today’s most popular WLAN standard by significantly increasing reachability, reliability, and throughput. Ratified on September 2009, this standard defines many new physical and medium access control (MAC) layer enhancements. These enhancements aim to provide a data transmission rate of up to 600 Mbps. Since June 2007, 802.11n products are available on the enterprise market based on the draft 2.0. In this paper we investigate the effect of most of the proposed 802.11n MAC and physical layer features on the adhoc networks performance. We have performed several experiments in real conditions. The experimental results demonstrated the effectiveness of 802.11n enhancement. We have also examined the interoperability and fairness of 802.11n. The frame aggregation mechanism of 802.11n MAC layer can improve the efficiency of channel utilization by reducing the protocol overheads. We focused on the effect of frame aggregation on the support of voice and video applications in wireless networks. We also propose a new frame aggregation scheduler that considers specific QoS requirements for multimedia applications. We dynamically adjust the aggregated frame size based on frame s access category defined in 802.11e standard.
Publication Details
Page(s) 48-58
DOI DOI not available
Published Journal: International Journal of Communication Networks and Information Security, Volume: 5, Issue: 1, Year: 2013

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