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On the Data Gathering Capacity and Latency in Wireless (Rapporti tecnici, manuali, carte geologiche e tematiche e prodotti multimediali)

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On the Data Gathering Capacity and Latency in Wireless (Rapporti tecnici, manuali, carte geologiche e tematiche e prodotti multimediali) (literal)

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Santi P. (2009)
On the Data Gathering Capacity and Latency in Wireless
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ABSTRACT: In this paper, we investigate the fundamental properties of data gathering in wirelesssensor networks, in terms of both transport capacity and latency. We consider a scenarioin which s(n) out of n total network nodes have to deliver data to a set of d(n) sink nodesat a constant rate f(n; s(n); d(n)). The goal is to characterize the maximum achievablerate, and the latency in data delivery. We present a simple data gathering scheme thatachieves asymptotically optimal data gathering capacity and latency with arbitrary net-work deployments when d(n) = 1, and for most scaling regimes of s(n) and d(n) whend(n) 1 in case of square grid and random node deployments. Differently from mostprevious work, our results and the presented data gathering scheme do not sacrifice en-ergy efficiency to the need of maximizing capacity and minimizing latency. Finally, weconsider the effects of a simple form of data aggregation on data gathering performance,and show that capacity can be increased o (literal)

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