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Maria Eugenia Berezin, Franck Rousseau, Andrzej Duda

Multichannel Virtual Access Points for Seamless Handoffs in IEEE 802.11 Wireless Networks

In Proceedings of Vehicular Technology Conference (VTC). Budapest, Hungary, May 15-18, 2011

Monday 16 May 2011

Within IEEE 802.11 Wireless Local Area Networks (WLANs), client stations can move freely, but because of the short range of their Access Points (APs), they usually need to reassociate with different APs to continue to communicate. When changing APs, a client station starts a process known as a handoff that can take up to 2 seconds, which is too long for real-time applications such as Voice over IP (VoIP). Various solutions have been proposed to change or improve the client behaviour when doing a handoff. Previously, we proposed the idea of Virtual Access Points (VAP) implemented on APs in which a client station changes APs without disrupting its current communication. Based on this new concept, we have developed a solution called Multichannel Virtual Access Points (mVAP) to take advantage of APs operating on multiple channels. We have implemented mVAP using PACMAP, a tool for packet manipulation, and evaluated its performance. Our results show that mVAP is a new efficient technique for seamless handoffs without performance degradation.

P.S.

@inproceedings{berezin-vtc-spring2011,
	author = {Berezin, Maria Eugenia and Rousseau, Franck and Duda, Andrzej},
	title = {Multichannel Virtual Access Points for Seamless Handoffs in IEEE 802.11 Wireless Networks},
	booktitle = {Proceedings of Vehicular Technology Conference (VTC)},
	address = {Budapest, Hungary},
	month = May # {~15--18,},
	year = 2011
}

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