This work presents node selection algorithms in a resource-constrained environment where the algorithms maintain a desirable geolocation accuracy while extending the tracking lifetime of the system. The sensor manager simply selects an active set of nodes for a given snapshot by maximizing a utility function under the geolocation constraint. The utility function serves as a surrogate for the effective network lifetime. Three utility functions are considered: energy consumption (EC), remaining energy (RE), and current lifetime (CL). A general h-horizon node selection algorithm is formulated for a generic utility function. Then, the node selection algorithms corresponding to the three utilities are tested for the myopic (h = 1) and h = 2 cases. The results indicate that the RE and CL utilities lead to longer effective network lifetimes than the EC utility.


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    Title :

    Energy-Aware Node Selection for Localization


    Contributors:


    Publication date :

    2008-03-01


    Size :

    2545274 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English