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2014 IEEE 10th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob) (2014)
Larnaca, Cyprus
Oct. 8, 2014 to Oct. 10, 2014
ISBN: 978-1-4799-5041-6
pp: 685-690
Anil Kumar Rangisetti , Department of Computer Science and Engineering, Indian Institute of Technology Hyderabad, India
Hardik Bhopabhai Baldaniya , Department of Computer Science and Engineering, Indian Institute of Technology Hyderabad, India
Pradeep Kumar B , Department of Computer Science and Engineering, Indian Institute of Technology Hyderabad, India
Bheemarjuna Reddy Tamma , Department of Computer Science and Engineering, Indian Institute of Technology Hyderabad, India
ABSTRACT
In Wireless Local Area Networks (WLANs), providing seamless mobility and balancing load among Access Points (APs) are challenging issues due to simple signal strength based association and hand-off mechanisms employed at wireless clients. Extensions to Software Defined Networking (SDN) framework for wireless networks could help to address theses issues in an efficient and cost-effective manner with a central view of WLAN at the SDN controller. In this work, we propose a novel load-aware hand-off algorithm for SDN based WLAN systems which considers traffic load of APs in addition to received signal strength at wireless clients to solve load imbalance among APs and offer seamless mobility. We implemented the proposed algorithm on a small-scale prototype testbed and obtained improved network throughput for mobile clients as well as static clients compared to legacy hand-off algorithms used in WLANs.
INDEX TERMS
Wireless LAN, Throughput, Computer architecture, Wireless communication, IEEE 802.11 Standards, Software, Switches
CITATION

A. K. Rangisetti, H. B. Baldaniya, P. K. B and B. R. Tamma, "Load-aware hand-offs in software defined wireless LANs," 2014 IEEE 10th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)(WIMOB), Larnaca, Cyprus, 2014, pp. 685-690.
doi:10.1109/WiMOB.2014.6962245
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