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Optimal energy management policies for energy harvesting sensor nodes

Sharma, V and Mukherji, U and Joseph, V and Gupta, S (2010) Optimal energy management policies for energy harvesting sensor nodes. In: IEEE Transactions on Wireless Communications, 9 (4). pp. 1326-1336.

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We study a sensor node with an energy harvesting source. The generated energy can be stored in a buffer. The sensor node periodically senses a random field and generates a packet. These packets are stored in a queue and transmitted using the energy available at that time. We obtain energy management policies that are throughput optimal, i.e., the data queue stays stable for the largest possible data rate. Next we obtain energy management policies which minimize the mean delay in the queue. We also compare performance of several easily implementable sub-optimal energy management policies. A greedy policy is identified which, in low SNR regime, is throughput optimal and also minimizes mean delay.

Item Type: Journal Article
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Keywords: Optimal energy management policies;energy harvesting;sensor networks.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 23 Feb 2012 09:46
Last Modified: 23 Feb 2012 09:46
URI: http://eprints.iisc.ernet.in/id/eprint/43120

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