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Several applications have been proposed for mobile wireless sensor networks. Some of these applications require the transfer of a large amount of data in a short period of time. This is challenging, since the mobile node may be required to repeatedly establish a link with multiple relay nodes which proceed to forward the data to the base station. Apart from the technical difficulty mobility may cause, there is an associated latency to the data transfer. One way to deal with the problem of latency is to timely foresee the deterioration in the quality of a link and to seamlessly transfer the communication to a more stable link. This paper extends the RI-MAC protocol to support a seamless handover.
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