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COCOON
2005
Springer
15 years 3 months ago
2005
Springer
The paper addresses the relay node placement problem in two-tiered wireless sensor networks. Given a set of sensor nodes in an Euclidean plane, our objective is to place minimum nu...
HUC
2010
Springer
14 years 11 months ago
2010
Springer
Opportunistic activity and context recognition systems do not presume a static sensor infrastructure that is defined at the design time of a system. They also do not have a fixed ...
PEWASUN
2005
ACM
15 years 3 months ago
2005
ACM
Using directional antennas in wireless ad hoc networks can significantly improve network performance. However, the deafness problem greatly limits the network performance. This pa...
GLOBECOM
2010
IEEE
14 years 7 months ago
2010
IEEE
In this paper we explore the mobility of a mobile sink in a wireless sensor network (WSN) to prolong the network lifetime. Since the mechanical movement of mobile sink is driven by...
MOBIMEDIA
2007
14 years 11 months ago
2007
The recent advances in miniaturization and the creation of low-power circuits, combined with small-sized batteries have made the development of wireless sensor networks a working ...