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INFOCOM
2005
IEEE

Dynamic node activation in networks of rechargeable sensors

12 years 5 months ago
Dynamic node activation in networks of rechargeable sensors
— We consider a network of rechargeable sensors, deployed redundantly in a random sensing environment, and address the problem of how sensor nodes should be activated dynamically so as to maximize a generalized system performance objective. The optimal sensor activation problem is a very difficult decision question, and under Markovian assumptions on the sensor discharge/recharge periods, it represents a complex semi-Markov decision problem. With the goal of developing a practical, distributed but efficient solution to this complex, global optimization problem, we first consider the activation question for a set of sensor nodes whose coverage areas overlap completely. For this scenario, we show analytically that there exists a simple threshold activation policy that achieves a performance within a factor of 3 4 of the optimum over all possible policies. We extend this threshold policy to a general network setting where the coverage areas of different sensors could have partial or ...
Koushik Kar, Ananth Krishnamurthy, Neeraj Jaggi
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where INFOCOM
Authors Koushik Kar, Ananth Krishnamurthy, Neeraj Jaggi
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