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SMART ASSOCIATION CONTROL IN WIRELESS FIDELITY USING FBA

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Author(s): Devipriya A | Prashanth M | Parameshachari B D | Muruganantham C | H S Divakara Murthy´╗┐ | Arun Jose

Journal: International Journal of Computer Science and Mobile Computing
ISSN 2320-088X

Volume: 2;
Issue: 8;
Start page: 24;
Date: 2013;
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Keywords: Include load balancing | association control | max-flow | fairness

ABSTRACT
Wi-Fi clients must associate to a specific Access Point (AP) to communicate over the Internet.Current association methods are based on maximum Received Signal Strength Index (RSSI) implying that aclient associates to the strongest AP around it. This is a simple scheme that has performed well in purelydistributed settings. Modern wireless networks, however, are increasingly being connected by a wiredbackbone. The backbone allows for out-of-band communication among APs, opening up opportunities forimproved protocol design. This paper takes advantage of this opportunity through a coordinated clientassociation scheme where APs consider a global view of the network, and decide on the optimal client-APassociation. We show that such an association outperforms RSSI based schemes in several scenarios, whileremaining practical and scalable for wide-scale deployment.Here introduce the SAC protocol in this project to improve our performance. It argue that the load imbalanceand consequent unfair bandwidth allocation can be greatly alleviated by intelligently associating users toAPs, termed association control, rather than having users associate with the APs of strongest signal strength.Simulation results demonstrate that such a technique can improve over purely distributed associationschemes, resulting in higher fairness, better load balancing properties, and even some robustness to clientmobility.
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