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Wireless Mesh Networks (WMNs) are comprised of mesh routers whose relatively small transmission range may result in frequent handoffs, leading to high packet delays and loss rates and limiting the performance of real-time applications over WMNs. In this paper, the authors propose BASH - a backhaul-aided seamless handoff scheme. Their scheme takes advantage of the wireless backhaul feature of WMNs and allows a mobile station to probe the neighboring mesh routers by accessing the backhaul channel. After the probe request, the mobile station is able to switch back to its primary communication channel and resume its ongoing communication without waiting for the probe responses.
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