User-Based Channel Assignment Algorithm in a Load-Balanced IEEE 802.11 WLAN

Description:

This article discusses a user-based channel assignment algorithm in a load-balanced IEEE 802.11 WLAN. A new load balancing algorithm is presented based on power management of Access Points (APs) to reduce 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.
Creator(s):
Creation Date: 2009  
Partner(s):
UNT College of Engineering
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Collection(s):
UNT Scholarly Works
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Creator (Author):
Haidar, Mohamad

Universite du Quebec

User-Based Channel Assignment Algorithm in a Load-Balanced IEEE 802.11 WLAN
Creator (Author):
Al-Rizzo, Hussain M.

University of Arkansas Little Rock
Creator (Author):
Chan, Yupo

University of Arkansas Little Rock
Creator (Author):
Akl, Robert G.

University of North Texas
Publisher Info:
Publisher Name: IGI Global
Place of Publication: [Hershey, Pennsylvania]
Original Creation Date: 2009  
Description:

This article discusses a user-based channel assignment algorithm in a load-balanced IEEE 802.11 WLAN. A new load balancing algorithm is presented based on power management of Access Points (APs) to reduce 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.
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Physical Description:

16 p.
Language(s):
Subject(s):
Keyword(s): access points | channel assignments | congestion | load balancing | signal-to-interference ratios | wireless local area networks
Source: International Journal of Interdisciplinary Telecommunications and Networking (IJITN), 2009, Hershey: IGI Global, pp. 66-81.
Partner:
UNT College of Engineering
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Collection:
UNT Scholarly Works
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Identifier:
  • ARK: ark:/67531/metadc30851
Resource Type: Article
Format: Text
Rights:
Access: Public
Citation:
Publication Title: International Journal of Interdisciplinary Telecommunications and Networking (IJITN)
Volume: 1
Issue: 2
Page Start: 66
Page End: 81
Peer Reviewed: Yes