Terminal-centric ap selection algorithm based on frame retransmissions
Yuzo Taenaka, Shigeru Kashihara, Kazuya Tsukamoto, Suguru Yamaguchi, Yuji Oie · 2007
In the near future, wireless local area networks (WLANs) will overlap to provide continuous coverage over a wide area. In such ubiquitous WLANs, a mobile node (MN) moving freely between multiple access points (APs) requires not only permanent access to the Internet, but also continuous communication quality during handover. In order to satisfy these requirements, an MN needs to (1) select an optimal AP and (2) execute a handover seamlessly. Requireing (2), we have proposed a seamless handover method in previous work. In this paper, in order to achieve (1), we propose and implement a terminal-centric AP selection algorithm. In our proposed AP selection method, an MN investigates the wireless link condition of an AP based on the number of frame retransmissions in addition to RSSI. In our demonstration, we show that the number of frame retransmissions has the potential to be an effective decision metric for AP selection.