Sensor scheduling for lifetime maximization in user-centric sensor networks

Chao Yu; Gaurav Sharma

doi:10.1117/12.807958

19 January 2009 Sensor scheduling for lifetime maximization in user-centric sensor networks

Chao Yu, Gaurav Sharma

Proceedings Volume 7257, Visual Communications and Image Processing 2009; 72570H (2009) https://doi.org/10.1117/12.807958
Event: IS&T/SPIE Electronic Imaging, 2009, San Jose, California, United States

Abstract

We explore sensor scheduling strategies to maximize the operational lifetime of a user-centric image sensor network. Image sensors are deployed for gathering visual information over a monitored region. Users navigate within this region by specifying a time-varing desired viewpoint and the network responds with the requested visual data. By modeling the user's desired viewpoint in a probabilistic framework, we develop a stochastic formulation of the network lifetime and investigate the camera scheduling strategy that maximizes the expected value of network lifetime. By suitably abstracting the problem, we present a closed-form solution for the simplistic case when the monitored region is divided into two parts. Using asymptotic analysis, we then present a simple camera scheduling strategy for the general case that we conjecture to be optimal. Simulation results demonstrate a clear advantage of the proposed camera scheduling approach over previously considered alternatives.

Citation Download Citation

Chao Yu and Gaurav Sharma "Sensor scheduling for lifetime maximization in user-centric sensor networks", Proc. SPIE 7257, Visual Communications and Image Processing 2009, 72570H (19 January 2009); https://doi.org/10.1117/12.807958

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