ISSN : 1796-203X
Volume : 2    Issue : 5    Date : July 2007

Reducing Energy Consumption of Wireless Sensor Networks through Processor Optimizations
Gürhan Küçük and Can Başaran
Page(s): 67-74
Full Text:
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When the environmental conditions are stable, a typical Wireless Sensor Network (WSN)
application may sense and process very similar or constant data values for long durations. This is a
common behavior of WSN nodes that can be exploited for reducing their power consumption. This
study combines two orthogonal techniques to reduce the energy dissipation of the processor
component of the sensor nodes. First, we briefly discuss silent-store filtering MoteCache. Second,
we utilize Content- Aware Data MAnagement (CADMA) on top of Mote- Cache architecture to achieve
further energy savings and possible performance improvements. The complexity increase
introduced by CADMA is also compensated by further complexity reduction in Mote- Cache
architecture. Our optimal configuration reduces the total node energy, and hence increases the
node lifetime, by 19.4% on the average across a wide variety of simulated sensor benchmarks. Our
complexityaware configuration with a minimum MoteCache size with only four entries not only
achieves energy savings up to 16.2% but also performance improvements up to 14%, on the

Index Terms
Computer Architecture, Sensor Networks