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Experiences with a centralized scheduling approach for performance management of IEEE 802.11 wireless LANs

Hegde, Malati and Kumar, Pavan and Vasudev, KR and Sowmya, NN and Anand, SVR and Kumar, Anurag and Kuri, Joy (2013) Experiences with a centralized scheduling approach for performance management of IEEE 802.11 wireless LANs. In: IEEE/ACM Transactions on Networking, 21 (2). pp. 648-662.

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Official URL: http://dx.doi.org/10.1109/TNET.2012.2207402

Abstract

We present a centralized integrated approach for: 1) enhancing the performance of an IEEE 802.11 infrastructure wireless local area network (WLAN), and 2) managing the access link that connects the WLAN to the Internet. Our approach, which is implemented on a standard Linux platform, and which we call ADvanced Wi-fi Internet Service EnhanceR (ADWISER), is an extension of our previous system WLAN Manager (WM). ADWISER addresses several infrastructure WLAN performance anomalies such as mixed-rate inefficiency, unfair medium sharing between simultaneous TCP uploads and downloads, and inefficient utilization of the Internet access bandwidth when Internet transfers compete with LAN-WLAN transfers, etc. The approach is via centralized queueing and scheduling, using a novel, configurable, cascaded packet queueing and scheduling architecture, with an adaptive service rate. In this paper, we describe the design of ADWISER and report results of extensive experimentation conducted on a hybrid testbed consisting of real end-systems and an emulated WLAN on Qualnet. We also present results from a physical testbed consisting of one access point (AP) and a few end-systems.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to IEEE-Inst Electrical Electronics Engineers Inc.
Keywords: IEEE 802.11 Wireless Networks; Split-Medium Acces Control (MAC) Wireless Local Area Network (WLAN) Controllers; WLAN Controllers; WLAN Quality-of-Service (QoS) Management
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Division of Electrical Sciences > Electrical Communication Engineering
Depositing User: Francis Jayakanth
Date Deposited: 26 Jun 2013 10:08
Last Modified: 26 Jun 2013 10:08
URI: http://eprints.iisc.ac.in/id/eprint/46759

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