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Mobility in WSNs can impact the overall network performances. The controlled mobility offers the possibility of relocating sensing resources to areas with more intensive activity and/or decreased sensor density. This paper presents a novel algorithm for sensor nodes relocation that achieves longer sensor network lifetime. The algorithm has distributed approach for sensors mobility, obtaining improved...
Wireless sensor networks (WSN) are composed of a large number of sensor nodes which are connected by wireless channels. Some of these sensor nodes are regarded as critical nodes which are responsible for the management of the other nodes in their sphere. Therefore, update of node information must be implemented through these critical nodespsila multicast operation. In this paper, we present a novel...
Node deployment is an important issue in wireless sensor networks (WSNs). Sensor nodes should be efficiently deployed in a predetermined region in a low-cost and high-coverage-quality manner. Random deployment is the simplest way to deploy sensor nodes but may cause unbalanced deployment and, therefore, increase hardware costs and create coverage holes. This paper presents the efficient obstacle-resistant...
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