Node movement can be exploited to reduce the energy consumption of wireless network communication. The strategy consists in delaying communication until a mobile node moves close to its target peer node, within an application-imposed deadline. We evaluate the performance of various heuristics that, based on the movement history of the mobile node, estimate an optimal time (in the sense of least energy use) of communication subject to the delay constraint. We evaluate the impact of node movement model, length of movement history maintained, allowable delay, single hop versus multiple hop communication, and size of data transfer on the energy consumption. We also present measurement results on an iPAQ pocket PC that quantify energy consumption in executing the prediction algorithms. Our results show that, with relatively simple and hence efficient prediction heuristics, energy savings in communication can significantly outweigh the energy expenses in executing the prediction algorithms.
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On the effectiveness of movement prediction to reduce energy consumption in wireless communication
Chakraborty, Srijan; Yau, David K. Y.; Lui, John C. S.
Follow ACM SIGMETRICS Performance Evaluation Review
, Volume 31 (1)
Association for Computing Machinery – Jun 10, 2003
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