Topology-aided cross-layer fast handoff designs for IEEE 802.11/mobile IP environments
IEEE Communications Magazine
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The increasing number of Wi-Fi-compatible mobile devices highlights various wireless access challenges, including the need for smooth hand offs between Internet attachment points in mobile IPv6 networks. To confirm address uniqueness in a new domain, mobile nodes must run duplicate address detection (DAD), which is a time-consuming process. The Proactive DAD approach uses topology information and layer-2 signals to predict the new network domains prior to or in parallel with layer-3 hand offs.Experimental results show that P-DADcan significantly reduce both hand-off latency and packet loss.