A Fast Handoff Algorithm for IEEE 802.11 WLANs using Dynamic Scanning Time 


Vol. 29,  No. 2, pp. 128-139, Feb.  2004


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  Abstract

As the Internet usage grows, people want to access the Internet while they arc moving. To satisfy this requirement economically, IEEE 802.11 Wireless LANs(WLANs) are rapidly deployed. In order to support mobility, WLANs must provide smooth handoff mechanism. Recent studies show, however, handoff delay of WLANs exceeds 300ms, most of which is due to slow scanning mechanism finding a new AP. With this handoff delay, current WLANs is not suitable 10 provide seamless realtime interactive services such as VolP service. In this paper, we analyze the current handoff method of IEEE 802.11 and we propose a new handoff algorithm which can decrease time needed for searching a new AP and thus reduce overall handoff lime. We show by simulation that the proposed algorithm has shorter handoff delay than current handoff method.

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  Cite this article

[IEEE Style]

K. Kwon and C. Lee, "A Fast Handoff Algorithm for IEEE 802.11 WLANs using Dynamic Scanning Time," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 2, pp. 128-139, 2004. DOI: .

[ACM Style]

Kyoung-nam Kwon and Chae-woo Lee. 2004. A Fast Handoff Algorithm for IEEE 802.11 WLANs using Dynamic Scanning Time. The Journal of Korean Institute of Communications and Information Sciences, 29, 2, (2004), 128-139. DOI: .

[KICS Style]

Kyoung-nam Kwon and Chae-woo Lee, "A Fast Handoff Algorithm for IEEE 802.11 WLANs using Dynamic Scanning Time," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 2, pp. 128-139, 2. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880