Title :
Improving throughput for heterogeneous traffic in IEEE802.11e EDCA
Author :
Jun, Tu ; Xing, Xia ; Zhi-Lan, Chen ; Zhi-Wei, Ye ; Zhi, Zhang
Author_Institution :
Sch. of Comput. Sci. & Technol., Hubei Univ. of Technol., Wuhan, China
Abstract :
An analytical model is proposed to describe the priority schemes of the enhanced distributed channel access (EDCA) mechanism of the IEEE 802.11e standard. EDCA provides class-based differentiated quality of service (QoS) to IEEE 802.11 wireless local area networks (WLANs). However, One of the main challenges with 802.11e EDCA is the configuration of the open parameters of this mechanism, namely arbitration inter frame space (AIFS), contention window (CW) and transmission opportunity (TXOP). In this paper, we focus on the optimal configuration of parameter CW in order to improve the throughput performance of the WLAN. We present an approach to set parameter CW according to channel status. Then, based on this model, we search for the optimal throughput with EDCA. Finally, we show the model is calculated numerically and validated against simulation results.
Keywords :
quality of service; telecommunication traffic; wireless LAN; wireless channels; IEEE802.11e standard; arbitration inter frame space; class-based differentiated quality of service; contention window; enhanced distributed channel access mechanism; heterogeneous traffic; wireless local area networks; Application software; Computer science; Conferences; Data acquisition; Distributed computing; Performance analysis; Quality of service; Throughput; Traffic control; Wireless LAN; CW; EDCA; IEEE802.11e; QoS;
Conference_Titel :
Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications, 2009. IDAACS 2009. IEEE International Workshop on
Conference_Location :
Rende
Print_ISBN :
978-1-4244-4901-9
Electronic_ISBN :
978-1-4244-4882-1
DOI :
10.1109/IDAACS.2009.5342884
