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66 Int. J. of Interdisciplinary Telecommunications and Networking, 1(2), 66-81, April-June 2009 Copyright 2009, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global
 

Summary: 66 Int. J. of Interdisciplinary Telecommunications and Networking, 1(2), 66-81, April-June 2009
Copyright 2009, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global
is prohibited.
AbstrAct
A new load balancing algorithm is presented based on power management of Access Points (APs) to re-
duce congestion at hot spots in Wireless Local Area Networks (WLANs) and to assign channels to APs The
algorithm first finds the Most Congested Access Point (MCAP), then decreases its transmitted power in
discrete steps, and the process continues until the users'assignment which leads to a high balance index is
reached. A new mathematical programming formulation is then applied to assign channels to the APs such
that the Signal-to-Interference Ratio (SIR) at the users'level is maximized. Results show that the algorithm
is capable of reducing the overall congestion at hot spots in a WLAN and increases the SIR significantly for
cases involving relatively large WLANs. In the process, network throughput is increased. [Article copies
are available for purchase from InfoSci-on-Demand.com]
Keywords: Access Point; Channel Assignment; Congestion; Load Balancing; Signal-to-Interference
Ratio; Wireless Local Area Network
INtrODUctION
More industries, organizations, and offices
are installing WLANs to support the growing
demand of wireless users. The motivation is
to reduce the cost of running cables and, more

  

Source: Akl, Robert - Department of Computer Science and Engineering, University of North Texas

 

Collections: Computer Technologies and Information Sciences