Abstract
In the point coverage problem, the subject to be covered is a set of discrete space points. These points can be some particular space points to represent the sensor field (e.g., the vertices of a grid) or are used to model some physical targets in the sensor field (e.g., the missile launchers in a battlefield). In order to cover these points, sensor nodes can be deterministically placed or randomly deployed in the sensor field. In a random network deployment, it is possible that some nodes cannot cover even a single target point. On the other hand, if the sensor field is friendly reachable and the network size is not too large, deterministic node placement is to place the nodes only at the desired locations so that each sensor node can cover at least one target. The objective of a deterministic node placement can be summarized as to answer the following question:
Where are the optimal locations (among the available locations) to place sensor nodes so that the number of nodes (or the network cost) can be minimized and the point coverage requirements can be satisfied?
The problem of placing the least number of sensors to cover all target points is a variant of the canonical set-covering problem and is discussed in the first part of this chapter. The second part of this chapter introduces some variants of the optimal node placement problem with different coverage requirements.
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Wang, B. (2010). Node Placement Optimization. In: Coverage Control in Sensor Networks. Computer Communications and Networks. Springer, London. https://doi.org/10.1007/978-1-84996-059-5_4
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DOI: https://doi.org/10.1007/978-1-84996-059-5_4
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