Energy Efficient Transmission Scheduling for Infrastructure Sensor Nodes in Location Systems

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Executive Summary

This paper considers a location system where a number of deployed sensor nodes collaborate with objects that need to be localized. Unlike existing works, the authors focus on reducing the energy consumption of the sensor nodes, which are assumed to be static and run on limited battery power. To minimize the total wake-up time of the sensor nodes, they control the transmission schedule of each object. Because it is difficult to find an optimal solution to the considered optimization problem, they consider an approach to this problem that consists of two steps: create an equivalent modified graph coloring sub-problem, and permute the coloring result to obtain a best possible solution.

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