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Published in:
2009 | OriginalPaper | Chapter
Energy Sink-Hole Problem with Always-On Sensors in Two-Dimensional Deployment Fields
Author : Habib M. Ammari
Published in: Challenges and Opportunities of Connected k-Covered Wireless Sensor Networks
Publisher: Springer Berlin Heidelberg
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This chapter investigates the
energy sink-hole
problem, which is inherent to static always-on wireless sensor networks, where the sensors located around a static sink act as relays to the sink on behalf of
all
other sensors, thus suffering from severe energy depletion. It presents a theoretical analysis of the problem showing that it can be solved provided that the sensors
adjust
their communication ranges. However, this solution imposes a severe restriction on the size of a deployment field. To overcome this limitation, we propose a sensor deployment strategy based on energy heterogeneity with a goal that
all
the sensors deplete their energy at the same time. Also, it proposes an energy-efficient protocol to solve the energy sink-hole problem using sensor mobility and our newly introduced concept, called
energy-aware Voronoi diagram
.