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Controlled mobile helper nodes called data ferries have recently been proposed to bridge communications between disconnected nodes in a delay-tolerant manner. While existing work has explored various trajectory designs for the data ferry by assuming either static nodes or full observations at the data ferry, the problem remains open when the nodes are mobile and the ferry only has partial observations. In this paper, the authors investigate the problem of dynamic ferry mobility control under limited-range sensing. Assuming the data ferries are capable of sensing node presence within certain range and adjust their movements dynamically, they aim to design control policies that maximize the number of effective contacts.
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