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http://dx.doi.org/10.9708/jksci.2010.15.3.055

A Handoff Improvement Method for AP Choose Guarantee Network Performance of Mobile Node in Wireless LAN Systems  

Kim, Dong-Geun (경상대학교 컴퓨터과학과)
Kim, Sang-Bok (경상대학교 컴퓨터과학과)
Publication Information
Journal of the Korea Society of Computer and Information / v.15, no.3, 2010 , pp. 55-63 More about this Journal
Abstract
On Handoff, existing AP search has chosen one of various APs according to signal strength. However IEEE 802.11 uses Medium Access method with CSMA/CA(Carrier Sensing Multiple Access /Collision Avoidance) that competes to obtain a channel by sharing common medium. For that reason, network performance is heavily affected by the number of nodes and network congestion aside from signal strength. Consequently, in this paper we propose the method that choose one AP which ensures more improved network performance and set up a link, reflecting AP network information in Handoff area, on Handoff in the process of AP selection. We also demonstrate through simulation that it gets maximum performance even in the wireless network which many users concurrently access to, and it has considerable effects on aspects of resources and network management by distribution of users.
Keywords
IEEE802.11 WLAN; Handoff; CSMA/CA;
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