Association Method between a Station and AP for Public Wireless LAN Systems

S. Kim, H. Lee, and W. Ryu (Korea)


Wireless LANs, Mobile and Personal Computing


This paper is related to the field of the public wireless LAN services and it is more particularly to selection and association methods between the multiple wireless AP and user stations for the performance improvements. In these days, IEEE 802.11 Wireless LAN network is widely deployed and used as an emerging service to connect high-speed Internet in the public wireless environment. But, if there are many users and some access points without overlapping their radio channel in hot spot area, they suffer a severe decrease of performance of have not efficiency for connections linking many stations to one access point. It is needs an association and access control mechanism especially when it is used in the public environment. Our scheme provides two mechanisms. One is a message exchanging the information, which is composed of a max link speed and the number of user stations. For this, we use the bridge protocol data unit (bpdu) message. And we adapt an access points using the information of neighbor access points at option fields in a Beacon or a Probe Response frame. To understanding advantage of our method, we conduct the simulation attempt to emulate RTS/CTS mechanism at DCF scheme at 802.11. According to the results of simulation, we can see the good fairness and performance at each station and AP.

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